author | Claus Gittinger <cg@exept.de> |
Fri, 08 May 1998 12:29:18 +0200 | |
changeset 3425 | f7faef75f0d8 |
parent 3395 | 02f47135d80f |
child 3455 | 2b19e1e70adc |
permissions | -rw-r--r-- |
1 | 1 |
" |
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COPYRIGHT (c) 1988 by Claus Gittinger |
159 | 3 |
All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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||
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Number subclass:#Integer |
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instanceVariableNames:'' |
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classVariableNames:'DefaultDisplayRadix' |
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poolDictionaries:'' |
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category:'Magnitude-Numbers' |
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! |
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!Integer class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1988 by Claus Gittinger |
|
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All Rights Reserved |
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|
88 | 27 |
This software is furnished under a license and may be used |
28 |
only in accordance with the terms of that license and with the |
|
29 |
inclusion of the above copyright notice. This software may not |
|
30 |
be provided or otherwise made available to, or used by, any |
|
31 |
other person. No title to or ownership of the software is |
|
32 |
hereby transferred. |
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" |
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! |
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documentation |
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" |
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abstract superclass for all integer numbers. |
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See details in concrete subclasses LargeInteger and SmallInteger. |
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212 | 40 |
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1892 | 41 |
Mixed mode arithmetic: |
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42 |
int op int -> int |
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43 |
int op fix -> fix; scale is fix's scale |
91de0211651c
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parents:
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|
44 |
int op fraction -> fraction |
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parents:
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45 |
int op float -> float |
1892 | 46 |
|
1295 | 47 |
[Class variables:] |
212 | 48 |
|
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parents:
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|
49 |
DefaultDisplayRadix the radix in which integers present their |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
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parents:
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|
50 |
displayString (which is used in inspectors) |
91de0211651c
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parents:
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|
51 |
If you are to look at many hex numbers, bitmasks |
91de0211651c
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parents:
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|
52 |
etc. you may set this to 2 or 16. |
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parents:
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|
53 |
(avoids typing printStringRadix:.. all the time |
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- I know - I am lazy ;-). Default is 10. |
212 | 55 |
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1295 | 56 |
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[author:] |
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Claus Gittinger |
1556 | 59 |
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[see also:] |
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61 |
Number |
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62 |
LargeInteger SmallInteger |
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Float ShortFloat Fraction FixedPoint |
88 | 64 |
" |
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! ! |
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1 | 66 |
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!Integer class methodsFor:'instance creation'! |
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3044 | 69 |
byte1:b1 byte2:b2 byte3:b3 byte4:b4 |
70 |
"Squeak compatibility: |
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Return an Integer given four value bytes. |
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The returned integer is either a Small- or a LargeInteger" |
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|t| |
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t := b4. |
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t := (t bitShift:8) + b3. |
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t := (t bitShift:8) + b2. |
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^ (t bitShift:8) + b1. |
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" |
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(Integer byte1:16r10 byte2:16r32 byte3:16r54 byte4:16r76) hexPrintString |
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(Integer byte1:16r00 byte2:16r11 byte3:16r22 byte4:16r33) hexPrintString |
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" |
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||
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"Created: 19.10.1997 / 18:08:52 / cg" |
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"Modified: 19.10.1997 / 18:09:04 / cg" |
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! |
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||
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new:numberOfBytes neg:negative |
91 |
"for ST-80 compatibility: |
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Return an empty Integer (uninitialized value) with space for |
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numberOfBytes bytes (= digitLength). The additional argument |
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132 | 94 |
negative specifies if the result should be a negative number. |
95 |
The digits can be stored byte-wise into the result, using digitAt:put:" |
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^ (LargeInteger basicNew numberOfDigits:numberOfBytes) |
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sign:(negative ifTrue:[-1] ifFalse:[1]) |
701 | 99 |
! |
100 |
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readFrom:aStringOrStream |
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"return the next unsigned Integer from the (character-)stream aStream |
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as decimal number. |
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NOTICE: |
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This behaves different from the default readFrom:, in returning |
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0 (instead of raising an error) in case no number can be read. |
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It is unclear, if this is the correct behavior (ST-80 does this) |
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- depending on the upcoming ANSI standard, this may change." |
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^ self readFrom:aStringOrStream onError:0 |
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||
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" |
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Integer readFrom:(ReadStream on:'foobar') |
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Integer readFrom:(ReadStream on:'foobar') onError:nil |
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" |
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! |
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readFrom:aStringOrStream onError:exceptionBlock |
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"return the next Integer from the (character-)stream aStream, |
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handling initial XXr for arbitrary radix numbers and initial sign. |
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Also, all initial whitespace is skipped. |
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If the string does not represent a valid integer number, |
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return the value of exceptionBlock." |
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||
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ErrorSignal handle:[:ex | |
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^ exceptionBlock value |
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] do:[ |
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|str nextChar value negative| |
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str := aStringOrStream readStream. |
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nextChar := str skipSeparators. |
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(nextChar == $-) ifTrue:[ |
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negative := true. |
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136 |
str next. |
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nextChar := str peekOrNil |
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] ifFalse:[ |
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negative := false |
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]. |
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(nextChar isNil or:[nextChar isDigit not]) ifTrue:[ |
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" |
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the string does not represent an integer |
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" |
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^ exceptionBlock value |
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146 |
]. |
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147 |
value := self readFrom:str radix:10 onError:[^ exceptionBlock value]. |
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148 |
nextChar := str peekOrNil. |
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149 |
((nextChar == $r) or:[ nextChar == $R]) ifTrue:[ |
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"-xxr<number> is invalid; should be xxr-<val>" |
1700 | 151 |
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152 |
negative ifTrue:[ |
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153 |
'Integer [warning]: invalid (negative) radix ignored' errorPrintCR. |
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154 |
negative := false |
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155 |
]. |
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156 |
str next. |
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157 |
value := self readFrom:str radix:value onError:[^ exceptionBlock value] |
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158 |
]. |
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|
159 |
negative ifTrue:[ |
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160 |
^ value negated |
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161 |
]. |
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162 |
^ value |
701 | 163 |
]. |
164 |
||
165 |
" |
|
166 |
Integer readFrom:'12345' |
|
167 |
Integer readFrom:'-12345' |
|
168 |
Integer readFrom:'+12345' |
|
169 |
Integer readFrom:'16rFFFF' |
|
170 |
Integer readFrom:'12345.1234' |
|
171 |
Integer readFrom:'foo' |
|
172 |
Integer readFrom:'foo' onError:[0] |
|
173 |
" |
|
174 |
||
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175 |
"Created: / 16.11.1995 / 22:48:59 / cg" |
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176 |
"Modified: / 14.4.1998 / 19:17:28 / cg" |
701 | 177 |
! |
178 |
||
179 |
readFrom:aStringOrStream radix:radix |
|
180 |
"return the next unsigned Integer from the (character-)stream aStream |
|
181 |
in radix; (assumes that the initial XXr has already been read). |
|
182 |
No whitespace-skipping is done. |
|
183 |
Returns 0 if no number available. |
|
184 |
||
185 |
NOTICE: |
|
186 |
This behaves different from the default readFrom:, in returning |
|
187 |
0 (instead of raising an error) in case no number can be read. |
|
188 |
It is unclear, if this is the correct behavior (ST-80 does this) |
|
189 |
- depending on the upcoming ANSI standard, this may change." |
|
190 |
||
191 |
^ self readFrom:aStringOrStream radix:radix onError:0 |
|
192 |
! |
|
193 |
||
194 |
readFrom:aStringOrStream radix:radix onError:exceptionBlock |
|
195 |
"return the next unsigned Integer from the (character-)stream aStream |
|
196 |
in radix; (assumes that the initial XXr has already been read). |
|
197 |
No whitespace-skipping is done. |
|
198 |
Returns the value of exceptionBlock, if no number is available." |
|
199 |
||
200 |
|str nextChar value| |
|
201 |
||
202 |
str := aStringOrStream readStream. |
|
203 |
||
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204 |
nextChar := str peekOrNil. |
701 | 205 |
(nextChar notNil and:[nextChar isDigitRadix:radix]) ifFalse:[ |
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206 |
^ exceptionBlock value |
701 | 207 |
]. |
208 |
||
209 |
value := nextChar digitValue. |
|
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|
210 |
str next. |
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|
211 |
nextChar := str peekOrNil. |
701 | 212 |
[nextChar notNil and:[nextChar isDigitRadix:radix]] whileTrue:[ |
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|
213 |
value := value * radix + nextChar digitValue. |
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|
214 |
str next. |
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|
215 |
nextChar := str peekOrNil. |
701 | 216 |
]. |
217 |
^ value |
|
218 |
||
219 |
" |
|
220 |
Integer readFrom:(ReadStream on:'12345') radix:10 |
|
221 |
Integer readFrom:(ReadStream on:'FFFF') radix:16 |
|
222 |
Integer readFrom:(ReadStream on:'1010') radix:2 |
|
223 |
Integer readFrom:(ReadStream on:'foobar') radix:10 |
|
224 |
Integer readFrom:(ReadStream on:'foobar') radix:10 onError:nil |
|
225 |
" |
|
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226 |
|
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|
227 |
"Modified: / 14.4.1998 / 19:16:46 / cg" |
701 | 228 |
! ! |
229 |
||
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|
230 |
!Integer class methodsFor:'constants'! |
701 | 231 |
|
232 |
unity |
|
1555 | 233 |
"return the neutral element for multiplication (1)" |
701 | 234 |
|
235 |
^ 1 |
|
1555 | 236 |
|
237 |
"Modified: 18.7.1996 / 12:26:43 / cg" |
|
701 | 238 |
! |
239 |
||
240 |
zero |
|
1555 | 241 |
"return the neutral element for addition (0)" |
701 | 242 |
|
243 |
^ 0 |
|
1555 | 244 |
|
245 |
"Modified: 18.7.1996 / 12:26:38 / cg" |
|
92 | 246 |
! ! |
247 |
||
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|
248 |
!Integer class methodsFor:'misc'! |
49 | 249 |
|
250 |
displayRadix:aNumber |
|
54 | 251 |
"being tired of always sending #printStringRadix: in the inspectors, |
49 | 252 |
this allows you to change the default print radix for the displayString |
253 |
method." |
|
254 |
||
255 |
DefaultDisplayRadix := aNumber |
|
132 | 256 |
|
257 |
" |
|
258 |
Integer displayRadix:16. 123456 inspect |
|
259 |
Integer displayRadix:10. 123456 inspect |
|
260 |
" |
|
49 | 261 |
! ! |
262 |
||
927
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diff
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|
263 |
!Integer methodsFor:'VisualAge compatibility'! |
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parents:
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diff
changeset
|
264 |
|
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parents:
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diff
changeset
|
265 |
<< aNumber |
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diff
changeset
|
266 |
"left shift" |
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diff
changeset
|
267 |
|
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diff
changeset
|
268 |
^ self bitShift:aNumber |
8d8edf9df0ae
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parents:
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|
269 |
|
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|
270 |
" |
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|
271 |
1 << 5 |
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|
272 |
64 << -5 |
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|
273 |
" |
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|
274 |
! |
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|
275 |
|
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|
276 |
>> aNumber |
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parents:
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|
277 |
"right shift" |
8d8edf9df0ae
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parents:
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|
278 |
|
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parents:
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|
279 |
^ self bitShift:(aNumber negated) |
8d8edf9df0ae
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parents:
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diff
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|
280 |
|
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|
281 |
" |
8d8edf9df0ae
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parents:
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|
282 |
1 >> -5 |
8d8edf9df0ae
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parents:
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diff
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|
283 |
64 >> 5 |
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parents:
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|
284 |
" |
8d8edf9df0ae
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parents:
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diff
changeset
|
285 |
! |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
286 |
|
1210 | 287 |
clearBit:index |
288 |
"return a new number where the specified bit is off. |
|
289 |
Bits are counted from 1 starting with the least significant." |
|
290 |
||
291 |
^ self bitAnd:(1 bitShift:index-1) bitInvert |
|
292 |
||
293 |
" |
|
294 |
5 clearBit:3 => 1 |
|
295 |
16rFFFF clearBit:16 => 32767 (16r7FFF) |
|
296 |
16rFFFF clearBit:1 => 65534 (16rFFFE) |
|
297 |
" |
|
298 |
! |
|
299 |
||
927
8d8edf9df0ae
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parents:
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diff
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|
300 |
isBitSet:index |
8d8edf9df0ae
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parents:
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diff
changeset
|
301 |
"return true if the index' bit is set; false otherwise. |
8d8edf9df0ae
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parents:
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diff
changeset
|
302 |
Bits are counted from 1 starting with the least significant." |
8d8edf9df0ae
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parents:
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diff
changeset
|
303 |
|
8d8edf9df0ae
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Claus Gittinger <cg@exept.de>
parents:
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diff
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|
304 |
^ (self bitAt:index) ~~ 0 |
1 | 305 |
|
927
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parents:
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diff
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|
306 |
" |
8d8edf9df0ae
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Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
307 |
5 isBitSet:3 => true |
8d8edf9df0ae
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parents:
701
diff
changeset
|
308 |
2r0101 isBitSet:2 => false |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
309 |
2r0101 isBitSet:1 => true |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
310 |
2r0101 isBitSet:0 index error |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
311 |
" |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
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parents:
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diff
changeset
|
312 |
! |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
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diff
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|
313 |
|
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
314 |
setBit:index |
8d8edf9df0ae
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parents:
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diff
changeset
|
315 |
"return a new number where the specified bit is on. |
8d8edf9df0ae
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parents:
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diff
changeset
|
316 |
Bits are counted from 1 starting with the least significant." |
8d8edf9df0ae
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parents:
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diff
changeset
|
317 |
|
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parents:
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diff
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|
318 |
^ self bitOr:(1 bitShift:index-1) |
1 | 319 |
|
927
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|
320 |
" |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
321 |
0 setBit:3 => 4 (2r100) |
8d8edf9df0ae
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parents:
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|
322 |
0 setBit:48 => 140737488355328 (2r1000.....000) |
8d8edf9df0ae
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parents:
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|
323 |
((0 setBit:99) setBit:100) printStringRadix:2 |
8d8edf9df0ae
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diff
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|
324 |
" |
1 | 325 |
! ! |
326 |
||
69 | 327 |
!Integer methodsFor:'bit operators'! |
328 |
||
329 |
bitAnd:anInteger |
|
357 | 330 |
"return the bitwise-and of the receiver and the argument, anInteger. |
331 |
This is a general and slow implementation, walking over the bytes of |
|
332 |
the receiver and the argument." |
|
69 | 333 |
|
927
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|
334 |
|n "{ Class: SmallInteger }" |
8d8edf9df0ae
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parents:
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diff
changeset
|
335 |
result byte| |
69 | 336 |
|
92 | 337 |
n := (anInteger digitLength) min:(self digitLength). |
338 |
result := self class basicNew numberOfDigits:n. |
|
69 | 339 |
|
340 |
1 to:n do:[:index | |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
341 |
byte := (anInteger digitAt:index) bitAnd:(self digitAt:index). |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
342 |
result digitAt:index put:byte. |
69 | 343 |
]. |
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
344 |
(byte == 0 or:[n <= SmallInteger maxBytes]) ifTrue:[ |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
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changeset
|
345 |
^ result compressed |
92 | 346 |
]. |
347 |
^ result |
|
357 | 348 |
|
349 |
" |
|
350 |
(16r112233445566778899 bitAnd:16rFF ) printStringRadix:16 |
|
351 |
(16r112233445566778899 bitAnd:16rFFFFFFFFFFFFFFFF00) printStringRadix:16 |
|
352 |
(16r112233445566778899 bitAnd:16rFF0000000000000000) printStringRadix:16 |
|
353 |
(16r112233445566778899 bitAnd:16r00000000000000FFFF) printStringRadix:16 |
|
354 |
" |
|
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
355 |
|
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
356 |
"Modified: 5.11.1996 / 14:06:26 / cg" |
69 | 357 |
! |
358 |
||
85 | 359 |
bitAt:index |
92 | 360 |
"return the value of the index's bit (index starts at 1). |
361 |
Notice: the result of bitShift: on negative receivers is not |
|
159 | 362 |
defined in the language standard (since the implementation |
363 |
is free to choose any internal representation for integers)" |
|
85 | 364 |
|
365 |
|i "{Class: SmallInteger}"| |
|
366 |
||
367 |
i := index - 1. |
|
368 |
^ (self digitAt:(i // 8 + 1)) bitAt:(i \\ 8 + 1) |
|
92 | 369 |
|
370 |
" |
|
927
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
371 |
1 bitAt:1 => 1 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
372 |
1 bitAt:2 => 0 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
373 |
1 bitAt:0 index error |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
374 |
2r1000100010001000100010001000100010001000100010001000 bitAt:48 => 1 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
375 |
2r1000100010001000100010001000100010001000100010001000 bitAt:47 => 0 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
376 |
|
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
377 |
(1 bitShift:1000) bitAt:1000 => 0 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
378 |
(1 bitShift:1000) bitAt:1001 => 1 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
379 |
(1 bitShift:1000) bitAt:1002 => 0 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
380 |
|
92 | 381 |
(1 bitShift:30) bitAt:30 |
382 |
(1 bitShift:30) bitAt:31 |
|
927
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
383 |
(1 bitShift:30) bitAt:32 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
384 |
(1 bitShift:31) bitAt:31 |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
385 |
(1 bitShift:31) bitAt:32 |
92 | 386 |
(1 bitShift:31) bitAt:33 |
387 |
(1 bitShift:32) bitAt:32 |
|
388 |
(1 bitShift:32) bitAt:33 |
|
389 |
(1 bitShift:32) bitAt:34 |
|
390 |
(1 bitShift:64) bitAt:64 |
|
391 |
(1 bitShift:64) bitAt:65 |
|
392 |
(1 bitShift:64) bitAt:66 |
|
393 |
" |
|
85 | 394 |
! |
395 |
||
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
396 |
bitClear:anInteger |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
397 |
"return the bitwise-and of the receiver and the complement of the argument, anInteger, |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
398 |
returning the receiver with bits of the argument cleared." |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
399 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
400 |
^self bitAnd:(anInteger bitInvert) |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
401 |
! |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
402 |
|
701 | 403 |
bitOr:anInteger |
404 |
"return the bitwise-or of the receiver and the argument, anInteger. |
|
405 |
This is a general and slow implementation, walking over the bytes of |
|
406 |
the receiver and the argument." |
|
407 |
||
927
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
408 |
|n "{ Class: SmallInteger }" |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
409 |
result byte| |
701 | 410 |
|
411 |
n := (anInteger digitLength) max:(self digitLength). |
|
412 |
result := self class basicNew numberOfDigits:n. |
|
413 |
||
414 |
1 to:n do:[:index | |
|
415 |
byte := (anInteger digitAt:index) bitOr:(self digitAt:index). |
|
416 |
result digitAt:index put:byte. |
|
417 |
]. |
|
418 |
"/ no need to normalize - if the operands were correct |
|
419 |
"/ byte == 0 ifTrue:[ |
|
420 |
"/ ^ result normalize |
|
421 |
"/ ]. |
|
422 |
^ result |
|
423 |
! |
|
424 |
||
85 | 425 |
bitShift:shiftCount |
426 |
"return the value of the receiver shifted by shiftCount bits; |
|
427 |
leftShift if shiftCount > 0; rightShift otherwise. |
|
92 | 428 |
|
429 |
Notice: the result of bitShift: on negative receivers is not |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
430 |
defined in the language standard (since the implementation |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
431 |
is free to choose any internal representation for integers)" |
85 | 432 |
|
92 | 433 |
|result |
434 |
prev "{ Class: SmallInteger }" |
|
435 |
next "{ Class: SmallInteger }" |
|
436 |
byte "{ Class: SmallInteger }" |
|
359 | 437 |
byte2 "{ Class: SmallInteger }" |
92 | 438 |
bitShift "{ Class: SmallInteger }" |
439 |
revShift "{ Class: SmallInteger }" |
|
440 |
digitShift "{ Class: SmallInteger }" |
|
441 |
n "{ Class: SmallInteger }" |
|
3044 | 442 |
nn "{ Class: SmallInteger }" |
443 |
nDigits "{ Class: SmallInteger }" | |
|
85 | 444 |
|
445 |
shiftCount > 0 ifTrue:[ |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
446 |
"left shift" |
85 | 447 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
448 |
digitShift := shiftCount // 8. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
449 |
bitShift := shiftCount \\ 8. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
450 |
n := self digitLength. |
92 | 451 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
452 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
453 |
modulo 8 shifts can be done faster ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
454 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
455 |
bitShift == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
456 |
result := self class basicNew numberOfDigits:n + digitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
457 |
result sign:self sign. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
458 |
result digits replaceFrom:(digitShift + 1) with:self digits. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
459 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
460 |
no normalize needed, since receiver was already normalized |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
461 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
462 |
^ result |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
463 |
]. |
92 | 464 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
465 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
466 |
less-than-8 shifts can be done faster ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
467 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
468 |
digitShift == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
469 |
n := n + 1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
470 |
result := self class basicNew numberOfDigits:n. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
471 |
result sign:self sign. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
472 |
prev := 0. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
473 |
1 to:n-1 do:[:index | |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
474 |
byte := self digitAt:index. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
475 |
byte := (byte bitShift:bitShift) bitOr:prev. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
476 |
result digitAt:index put:(byte bitAnd:16rFF). |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
477 |
prev := byte bitShift:-8. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
478 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
479 |
result digitAt:n put:prev. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
480 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
481 |
might have stored a 0-byte ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
482 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
483 |
prev == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
484 |
^ result compressed |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
485 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
486 |
^ result. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
487 |
]. |
92 | 488 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
489 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
490 |
slow case ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
491 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
492 |
n := n + digitShift + 1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
493 |
result := self class basicNew numberOfDigits:n. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
494 |
result sign:self sign. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
495 |
byte := self digitAt:1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
496 |
byte := (byte bitShift:bitShift) bitAnd:16rFF. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
497 |
result digitAt:(digitShift + 1) put:byte. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
498 |
revShift := -8 + bitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
499 |
nDigits := self digitLength. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
500 |
2 to:nDigits do:[:index | |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
501 |
byte := self digitAt:index. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
502 |
byte2 := self digitAt:index-1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
503 |
byte := byte bitShift:bitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
504 |
byte2 := byte2 bitShift:revShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
505 |
byte := (byte bitOr:byte2) bitAnd:16rFF. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
506 |
result digitAt:(index + digitShift) put:byte. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
507 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
508 |
byte2 := self digitAt:nDigits. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
509 |
byte2 := (byte2 bitShift:revShift) bitAnd:16rFF. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
510 |
result digitAt:(nDigits + digitShift + 1) put:byte2. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
511 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
512 |
might have stored a 0-byte ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
513 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
514 |
byte2 == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
515 |
^ result compressed |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
516 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
517 |
^ result |
92 | 518 |
]. |
519 |
||
520 |
shiftCount < 0 ifTrue:[ |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
521 |
"right shift" |
85 | 522 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
523 |
digitShift := shiftCount negated // 8. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
524 |
bitShift := shiftCount negated \\ 8. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
525 |
n := self digitLength. |
92 | 526 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
527 |
digitShift >= n ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
528 |
^ 0 |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
529 |
]. |
92 | 530 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
531 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
532 |
modulo 8 shifts can be done faster ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
533 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
534 |
bitShift == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
535 |
n := n-digitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
536 |
result := self class basicNew numberOfDigits:n. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
537 |
result sign:self sign. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
538 |
result digits replaceFrom:1 with:self digits startingAt:(digitShift + 1) . |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
539 |
n <= SmallInteger maxBytes ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
540 |
^ result compressed |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
541 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
542 |
^ result |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
543 |
]. |
85 | 544 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
545 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
546 |
less-than-8 shifts can be done faster ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
547 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
548 |
digitShift == 0 ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
549 |
result := self class basicNew numberOfDigits:n. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
550 |
result sign:self sign. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
551 |
prev := 0. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
552 |
bitShift := bitShift negated. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
553 |
revShift := 8 + bitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
554 |
n to:1 by:-1 do:[:index | |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
555 |
byte := self digitAt:index. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
556 |
next := (byte bitShift:revShift) bitAnd:16rFF. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
557 |
byte := (byte bitShift:bitShift) bitOr:prev. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
558 |
result digitAt:index put:(byte bitAnd:16rFF). |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
559 |
prev := next. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
560 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
561 |
(n <= 5) ifTrue:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
562 |
^ result compressed |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
563 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
564 |
^ result |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
565 |
]. |
92 | 566 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
567 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
568 |
slow case ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
569 |
" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
570 |
nn := n-digitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
571 |
result := self class basicNew numberOfDigits:nn. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
572 |
result sign:self sign. |
85 | 573 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
574 |
prev := 0. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
575 |
bitShift := bitShift negated. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
576 |
revShift := 8 + bitShift. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
577 |
n to:(1 + digitShift) by:-1 do:[:index | |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
578 |
byte := self digitAt:index. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
579 |
next := (byte bitShift:revShift) bitAnd:16rFF. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
580 |
byte := (byte bitShift:bitShift) bitOr:prev. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
581 |
result digitAt:(index - digitShift) put:byte. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
582 |
prev := next. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
583 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
584 |
"the last stored byte ..." |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
585 |
^ result compressed |
85 | 586 |
]. |
92 | 587 |
|
588 |
^ self "no shift" |
|
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
589 |
|
3135 | 590 |
"Modified: / 5.11.1996 / 14:06:37 / cg" |
591 |
"Modified: / 18.12.1997 / 17:17:29 / stefan" |
|
701 | 592 |
! |
1 | 593 |
|
1407
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
594 |
bitTest:anInteger |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
595 |
"return true, if the bitwise-and of the receiver and the argument, anInteger |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
596 |
is non-0, false otherwise. |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
597 |
This is a general and slow implementation, walking over the bytes of |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
598 |
the receiver and the argument." |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
599 |
|
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
600 |
|n "{ Class: SmallInteger }" |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
601 |
result byte| |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
602 |
|
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
603 |
n := (anInteger digitLength) min:(self digitLength). |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
604 |
result := self class basicNew numberOfDigits:n. |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
605 |
|
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
606 |
1 to:n do:[:index | |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
607 |
byte := (anInteger digitAt:index) bitAnd:(self digitAt:index). |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
608 |
byte ~~ 0 ifTrue:[^ true]. |
1407
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
609 |
]. |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
610 |
^ false |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
611 |
|
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
612 |
" |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
613 |
16r112233445566778899 bitTest:16rFF |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
614 |
16r112233445566778800 bitTest:16rFF |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
615 |
16r112233445566778899 bitTest:16rFFFFFFFFFFFFFFFF00 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
616 |
16r112233445566778899 bitTest:16rFF0000000000000000 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
617 |
16r112233445566778899 bitTest:16r00000000000000FFFF |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
618 |
16r1234567800000000 bitTest:16r8000000000000000 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
619 |
16r8765432100000000 bitTest:16r8000000000000000 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
620 |
16r12345678 bitTest:16r80000000 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
621 |
16r87654321 bitTest:16r80000000 |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
622 |
" |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
623 |
|
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
624 |
"Modified: 16.5.1996 / 16:29:50 / cg" |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
625 |
! |
6c278dcd5570
added #bitTest: for general integers
Claus Gittinger <cg@exept.de>
parents:
1337
diff
changeset
|
626 |
|
701 | 627 |
bitXor:anInteger |
628 |
"return the bitwise-or of the receiver and the argument, anInteger. |
|
629 |
This is a general and slow implementation, walking over the bytes of |
|
630 |
the receiver and the argument." |
|
631 |
||
927
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
632 |
|n "{ Class: SmallInteger }" |
8d8edf9df0ae
fixed \\ vs. rem: and // vs. quo: stupidities;
Claus Gittinger <cg@exept.de>
parents:
701
diff
changeset
|
633 |
result byte| |
701 | 634 |
|
635 |
n := (anInteger digitLength) max:(self digitLength). |
|
636 |
result := self class basicNew numberOfDigits:n. |
|
1 | 637 |
|
701 | 638 |
1 to:n do:[:index | |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
639 |
byte := (anInteger digitAt:index) bitXor:(self digitAt:index). |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
640 |
result digitAt:index put:byte. |
701 | 641 |
]. |
642 |
byte == 0 ifTrue:[ |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
643 |
^ result compressed |
701 | 644 |
]. |
645 |
^ result |
|
1 | 646 |
|
701 | 647 |
" |
648 |
(16r112233445566778899 bitXor:16rFF ) printStringRadix:16 '112233445566778866' |
|
649 |
(16r112233445566778899 bitXor:16rFFFFFFFFFFFFFFFF00) printStringRadix:16 'EEDDCCBBAA99887799' |
|
650 |
(16r112233445566778899 bitXor:16rFF0000000000000000) printStringRadix:16 'EE2233445566778899' |
|
651 |
(16r112233445566778899 bitXor:16r112233445566778800) printStringRadix:16 |
|
652 |
" |
|
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
653 |
|
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
654 |
"Modified: 5.11.1996 / 14:06:40 / cg" |
1 | 655 |
! |
656 |
||
701 | 657 |
highBit |
658 |
"return the bitIndex of the highest bit set. The returned bitIndex |
|
659 |
starts at 1 for the least significant bit. Returns -1 if no bit is set." |
|
660 |
||
661 |
|byteNr highByte| |
|
662 |
||
663 |
byteNr := self digitLength. |
|
664 |
highByte := self digitAt:byteNr. |
|
665 |
^ (byteNr - 1) * 8 + highByte highBit |
|
1 | 666 |
|
701 | 667 |
" |
668 |
1 highBit |
|
669 |
(1 bitShift:1) highBit |
|
670 |
(1 bitShift:30) highBit |
|
671 |
(1 bitShift:31) highBit |
|
672 |
(1 bitShift:32) highBit |
|
673 |
(1 bitShift:33) highBit |
|
674 |
(1 bitShift:64) highBit |
|
675 |
(1 bitShift:1000) highBit |
|
676 |
((1 bitShift:64)-1) highBit |
|
677 |
" |
|
2429 | 678 |
! |
679 |
||
680 |
lowBit |
|
681 |
"return the bitIndex of the lowest bit set. The returned bitIndex |
|
682 |
starts at 1 for the least significant bit. Returns -1 if no bit is set." |
|
683 |
||
684 |
|maxBytes "{ Class: SmallInteger }" |
|
685 |
bitIndex "{ Class: SmallInteger }" |
|
686 |
byte| |
|
687 |
||
688 |
maxBytes := self digitLength. |
|
689 |
bitIndex := 0. |
|
690 |
1 to:maxBytes do:[:byteIndex | |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
691 |
byte := self digitAt:byteIndex. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
692 |
byte ~~ 0 ifTrue:[ |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
693 |
^ bitIndex + byte lowBit |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
694 |
]. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
695 |
bitIndex := bitIndex + 8 |
2429 | 696 |
]. |
697 |
^ -1 |
|
698 |
||
699 |
" |
|
700 |
0 lowBit |
|
701 |
1 lowBit |
|
702 |
(1 bitShift:1) lowBit |
|
703 |
(1 bitShift:1) highBit |
|
704 |
(1 bitShift:30) lowBit |
|
705 |
(1 bitShift:30) highBit |
|
706 |
(1 bitShift:31) lowBit |
|
707 |
(1 bitShift:31) highBit |
|
708 |
(1 bitShift:32) lowBit |
|
709 |
(1 bitShift:32) highBit |
|
710 |
(1 bitShift:33) lowBit |
|
711 |
(1 bitShift:33) highBit |
|
712 |
(1 bitShift:64) lowBit |
|
713 |
(1 bitShift:64) highBit |
|
714 |
(1 bitShift:1000) lowBit |
|
715 |
(1 bitShift:1000) highBit |
|
716 |
((1 bitShift:64)-1) lowBit |
|
717 |
((1 bitShift:64)-1) highBit |
|
718 |
" |
|
719 |
||
720 |
"Modified: 1.3.1997 / 16:54:23 / cg" |
|
701 | 721 |
! ! |
722 |
||
723 |
!Integer methodsFor:'coercing and converting'! |
|
724 |
||
1888 | 725 |
asFixedPoint |
726 |
"return the receiver as a fixedPoint number" |
|
727 |
||
728 |
^ FixedPoint numerator:self denominator:1 scale:1 |
|
729 |
||
730 |
" |
|
731 |
100 asFixedPoint |
|
732 |
100 asFixedPoint + 0.1 asFixedPoint |
|
733 |
" |
|
734 |
||
735 |
"Modified: 5.11.1996 / 15:13:17 / cg" |
|
736 |
! |
|
737 |
||
2141 | 738 |
asFixedPoint:scale |
739 |
"return the receiver as fixedPoint number, with the given number |
|
740 |
of post-decimal-point digits." |
|
741 |
||
742 |
^ FixedPoint numerator:self denominator:1 scale:scale |
|
743 |
||
744 |
" |
|
745 |
100 asFixedPoint:2 |
|
746 |
100 asFixedPoint + (0.1 asFixedPoint:2) |
|
747 |
" |
|
748 |
||
749 |
"Modified: 10.1.1997 / 20:00:08 / cg" |
|
750 |
! |
|
751 |
||
701 | 752 |
asFraction |
753 |
"return a Fraction with same value as receiver" |
|
754 |
||
2794
862ee34a4821
when coercing an integer, do not reduce the result.
Claus Gittinger <cg@exept.de>
parents:
2793
diff
changeset
|
755 |
^ Fraction basicNew setNumerator:self denominator:1 |
862ee34a4821
when coercing an integer, do not reduce the result.
Claus Gittinger <cg@exept.de>
parents:
2793
diff
changeset
|
756 |
|
862ee34a4821
when coercing an integer, do not reduce the result.
Claus Gittinger <cg@exept.de>
parents:
2793
diff
changeset
|
757 |
"Modified: 28.7.1997 / 19:26:06 / cg" |
1 | 758 |
! |
759 |
||
701 | 760 |
asInteger |
1 | 761 |
"return the receiver truncated towards zero - |
762 |
for integers this is self" |
|
763 |
||
764 |
^ self |
|
1337 | 765 |
! |
766 |
||
767 |
signExtendedByteValue |
|
768 |
"return a smallInteger from sign-extending the 8'th bit. |
|
769 |
May be useful for communication interfaces" |
|
770 |
||
771 |
^ (self bitAnd:16rFF) signExtendedByteValue |
|
772 |
||
773 |
"Created: 7.5.1996 / 09:31:52 / cg" |
|
774 |
! |
|
775 |
||
776 |
signExtendedShortValue |
|
777 |
"return a smallInteger from sign-extending the 16'th bit. |
|
778 |
May be useful for communication interfaces" |
|
779 |
||
780 |
^ (self bitAnd:16rFFFF) signExtendedShortValue |
|
781 |
||
782 |
"Modified: 7.5.1996 / 09:31:57 / cg" |
|
1 | 783 |
! ! |
784 |
||
1976
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
785 |
!Integer methodsFor:'comparing'! |
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
786 |
|
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
787 |
hash |
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
788 |
"redefined to return smallInteger hashValues" |
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
789 |
|
3298
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
790 |
^ self bitAnd:16r3FFFFFFF. |
1976
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
791 |
|
3298
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
792 |
" |
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
793 |
-20000000000000 hash |
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
794 |
20000000000000 hash |
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
795 |
" |
1976
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
796 |
|
3298
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
797 |
"Created: / 14.11.1996 / 12:12:27 / cg" |
bf837fee7a15
Do not return negative hash values.
Stefan Vogel <sv@exept.de>
parents:
3188
diff
changeset
|
798 |
"Modified: / 24.2.1998 / 10:07:29 / stefan" |
1976
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
799 |
! ! |
f6e7094cd3e4
Integer>>hash returns a value clamped to the SmallInteger range
Claus Gittinger <cg@exept.de>
parents:
1893
diff
changeset
|
800 |
|
701 | 801 |
!Integer methodsFor:'double dispatching'! |
802 |
||
803 |
differenceFromFraction:aFraction |
|
804 |
"sent when a fraction does not know how to subtract the receiver, an integer" |
|
1 | 805 |
|
701 | 806 |
|d| |
1 | 807 |
|
701 | 808 |
d := aFraction denominator. |
809 |
^ (Fraction numerator:(aFraction numerator - (self * d)) |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
810 |
denominator:d) |
2793 | 811 |
|
812 |
"Modified: 28.7.1997 / 19:08:30 / cg" |
|
1 | 813 |
! |
814 |
||
701 | 815 |
productFromFraction:aFraction |
816 |
"sent when a fraction does not know how to multiply the receiver, an integer" |
|
1 | 817 |
|
701 | 818 |
^ (Fraction numerator:(self * aFraction numerator) |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
819 |
denominator:aFraction denominator) |
2793 | 820 |
|
821 |
"Modified: 28.7.1997 / 19:08:27 / cg" |
|
1 | 822 |
! |
823 |
||
701 | 824 |
quotientFromFraction:aFraction |
825 |
"sent when a fraction does not know how to divide the receiver, an integer" |
|
826 |
||
2793 | 827 |
^ Fraction |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
828 |
numerator:aFraction numerator |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
829 |
denominator:(self * aFraction denominator) |
2793 | 830 |
|
831 |
"Modified: 28.7.1997 / 19:08:23 / cg" |
|
701 | 832 |
! |
1 | 833 |
|
701 | 834 |
sumFromFraction:aFraction |
835 |
"sent when a fraction does not know how to add the receiver, an integer" |
|
836 |
||
837 |
|d| |
|
838 |
||
839 |
d := aFraction denominator. |
|
2793 | 840 |
^ Fraction numerator:(aFraction numerator + (self * d)) |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
841 |
denominator:d |
2793 | 842 |
|
843 |
"Modified: 28.7.1997 / 19:08:11 / cg" |
|
1 | 844 |
! ! |
845 |
||
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
846 |
!Integer methodsFor:'helpers'! |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
847 |
|
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
848 |
gcd_helper:anInteger |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
849 |
"a helper for the greatest common divisor of the receiver and anInteger. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
850 |
Knuth's algorithm for large positive integers, with receiver being |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
851 |
larger than the arg." |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
852 |
|
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
853 |
| selfAbs argAbs selfLowBit argLowBit shift t | |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
854 |
|
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
855 |
selfAbs := self. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
856 |
argAbs := anInteger. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
857 |
|
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
858 |
selfLowBit := selfAbs lowBit - 1. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
859 |
argLowBit := argAbs lowBit - 1. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
860 |
shift := selfLowBit min:argLowBit. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
861 |
argAbs := argAbs bitShift:(argLowBit negated). |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
862 |
[selfAbs = 0] whileFalse:[ |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
863 |
selfAbs := selfAbs bitShift:(selfLowBit negated). |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
864 |
selfAbs < argAbs ifTrue:[ |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
865 |
t := selfAbs. selfAbs := argAbs. argAbs := t |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
866 |
]. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
867 |
selfAbs := selfAbs - argAbs. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
868 |
selfLowBit := selfAbs lowBit - 1. |
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
869 |
]. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
870 |
^ argAbs bitShift:shift |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
871 |
|
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
872 |
"Created: 1.3.1997 / 16:38:17 / cg" |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
873 |
"Modified: 1.3.1997 / 16:45:17 / cg" |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
874 |
! ! |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
875 |
|
1 | 876 |
!Integer methodsFor:'misc math'! |
877 |
||
701 | 878 |
acker:n |
1560 | 879 |
"return the value of acker(self, n). |
880 |
;-) Do not try with receivers > 3" |
|
701 | 881 |
|
882 |
(self == 0) ifTrue:[^ n + 1]. |
|
883 |
(n == 0) ifTrue:[^ (self - 1) acker: 1]. |
|
884 |
^ (self - 1) acker:(self acker:(n - 1)) |
|
885 |
||
886 |
" |
|
887 |
3 acker:2 |
|
888 |
" |
|
1560 | 889 |
|
890 |
"Modified: 18.7.1996 / 13:08:16 / cg" |
|
701 | 891 |
! |
892 |
||
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
893 |
divMod:aNumber |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
894 |
"return an array filled with self // aNumber and |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
895 |
self \\ aNumber. |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
896 |
The result is only defined for positive receiver and argument. |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
897 |
This may be redefined in some integer classes for |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
898 |
more performance (where the remainder is generated as a side effect of division)" |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
899 |
|
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
900 |
^ Array |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
901 |
with:(self // aNumber) |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
902 |
with:(self \\ aNumber) |
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
903 |
|
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
904 |
" |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
905 |
10 divMod:3 |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
906 |
100 factorial divMod:103 |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
907 |
" |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
908 |
|
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
909 |
"Modified: 29.10.1996 / 21:18:58 / cg" |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
910 |
! |
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
911 |
|
1 | 912 |
factorial |
1560 | 913 |
"return fac(self) (i.e. 1*2*3...*self) using an iterative algorithm. |
914 |
This is slightly faster than the recursive algorithm, and does not |
|
915 |
suffer from stack overflow problems (with big receivers)" |
|
916 |
||
2745 | 917 |
|p i| |
1560 | 918 |
|
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
919 |
(self < 2) ifTrue:[ |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
920 |
self < 0 ifTrue:[ |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
921 |
"/ |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
922 |
"/ requested factorial of a negative number |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
923 |
"/ |
3395
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
924 |
^ self class |
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
925 |
raise:#domainErrorSignal |
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
926 |
receiver:self |
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
927 |
selector:#factorial |
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
928 |
errorString:'factorial of negative number' |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
929 |
]. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
930 |
^ 1 |
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
931 |
]. |
1560 | 932 |
p := 2. |
2745 | 933 |
i := 3. |
934 |
[i <= self] whileTrue:[ |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
935 |
p := p * i. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
936 |
i := i + 1. |
1560 | 937 |
]. |
938 |
^ p |
|
939 |
||
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
940 |
" |
1560 | 941 |
10 factorial |
942 |
1000 factorial |
|
943 |
10000 factorial |
|
944 |
10000 factorialR |
|
945 |
||
946 |
Time millisecondsToRun:[2000 factorial] |
|
947 |
Time millisecondsToRun:[2000 factorialR] |
|
2745 | 948 |
-1 factorial |
1560 | 949 |
" |
950 |
||
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
951 |
"Modified: 29.10.1996 / 20:58:43 / cg" |
1560 | 952 |
! |
953 |
||
954 |
factorialR |
|
955 |
"return fac(self) (i.e. 1*2*3...*self) using a recursive algorithm." |
|
1 | 956 |
|
356 | 957 |
(self >= 2) ifTrue:[ |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
958 |
^ self * (self - 1) factorialR |
1 | 959 |
]. |
356 | 960 |
^ 1 |
212 | 961 |
|
962 |
" |
|
1560 | 963 |
10 factorialR |
964 |
1000 factorialR |
|
212 | 965 |
" |
1560 | 966 |
|
967 |
"Created: 18.7.1996 / 12:48:36 / cg" |
|
1 | 968 |
! |
969 |
||
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
970 |
fib |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
971 |
"compute the fibionacci number for the receiver. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
972 |
(same result as returned by #recursiveFib. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
973 |
This method shows how a changed algorithm can |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
974 |
change things much more drastic than tuning ... |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
975 |
... compare 30 recursiveFib with 30 fib; |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
976 |
and dont even try 60 recursiveFib)" |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
977 |
|
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
978 |
|a1 a2 an| |
701 | 979 |
|
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
980 |
a1 := 1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
981 |
a2 := 0. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
982 |
an := 0. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
983 |
self timesRepeat:[ |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
984 |
an := a1 + a2. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
985 |
a2 := a1. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
986 |
a1 := an |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
987 |
]. |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
988 |
^ an |
701 | 989 |
|
990 |
" |
|
1422 | 991 |
Transcript showCR:(Time millisecondsToRun:[30 fib]) |
3162
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
992 |
Transcript showCR:(Time millisecondsToRun:[30 recursiveFib]) |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
993 |
Transcript showCR:(Time millisecondsToRun:[60 fib]) |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
994 |
Transcript showCR:(Time millisecondsToRun:[200 fib]) |
c7c8af356ff2
dont hardcode the numberof bytes (use maxBytes for alpha);
Claus Gittinger <cg@exept.de>
parents:
3138
diff
changeset
|
995 |
Transcript showCR:(Time millisecondsToRun:[1500 fib]) |
701 | 996 |
" |
997 |
! |
|
998 |
||
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
999 |
gcd:anInteger |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1000 |
"return the greatest common divisor of the receiver and anInteger. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1001 |
Euclids & Knuths algorithm." |
1 | 1002 |
|
3060 | 1003 |
|selfAbs argAbs t| |
1 | 1004 |
|
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1005 |
selfAbs := self abs. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1006 |
argAbs := anInteger abs. |
1888 | 1007 |
|
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1008 |
selfAbs < argAbs ifTrue:[ |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1009 |
t := selfAbs. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1010 |
selfAbs := argAbs. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1011 |
argAbs := t. |
1 | 1012 |
]. |
52 | 1013 |
|
2428
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1014 |
argAbs = 0 ifTrue: [^ selfAbs]. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1015 |
selfAbs := selfAbs \\ argAbs. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1016 |
selfAbs = 0 ifTrue:[^ argAbs]. |
d54efc515824
better gcd for large integers
Claus Gittinger <cg@exept.de>
parents:
2408
diff
changeset
|
1017 |
^ argAbs gcd_helper:selfAbs |
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1018 |
|
3060 | 1019 |
" |
1020 |
3141589999999999 gcd:1000000000000000 |
|
1021 |
" |
|
1022 |
||
1023 |
"Modified: / 25.10.1997 / 16:08:45 / cg" |
|
1 | 1024 |
! |
1025 |
||
1026 |
lcm:anInteger |
|
52 | 1027 |
"return the least common multiple (using gcd:)" |
1028 |
||
1029 |
^ (self * anInteger) abs // (self gcd: anInteger) |
|
1030 |
||
92 | 1031 |
" |
1032 |
65 lcm:15 |
|
1033 |
3 lcm:15 |
|
1034 |
" |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1035 |
! |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1036 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1037 |
recursiveFib |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1038 |
"compute the fibionacci number for the receiver. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1039 |
WARNING: |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1040 |
Dont use this method if you need fibionacci numbers - |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1041 |
this method is for benchmarking purposes only. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1042 |
(use #fib instead and dont ever try 60 recursiveFib ...)" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1043 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1044 |
(self > 1) ifTrue:[ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1045 |
^ (self - 1) recursiveFib + (self - 2) recursiveFib |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1046 |
]. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1047 |
^ 1 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1048 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1049 |
" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1050 |
30 fib |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1051 |
30 recursiveFib |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1052 |
Transcript showCR:(Time millisecondsToRun:[30 recursiveFib]) |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1053 |
Transcript showCR:(Time millisecondsToRun:[30 fib]) |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1054 |
" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1055 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1056 |
"Modified: 18.7.1996 / 12:47:19 / cg" |
1 | 1057 |
! ! |
1058 |
||
1059 |
!Integer methodsFor:'printing & storing'! |
|
1060 |
||
49 | 1061 |
displayString |
1062 |
"return a string for displaying in a view (as in inspector). |
|
1063 |
The output radix is usually 10, but can be changed by setting |
|
1064 |
DefaultDisplayRadix (see Integer>>displayRadix:)" |
|
1065 |
||
54 | 1066 |
(DefaultDisplayRadix isNil or:[DefaultDisplayRadix == 10]) ifTrue:[ |
159 | 1067 |
^ self printString |
54 | 1068 |
]. |
49 | 1069 |
^ self radixPrintStringRadix:DefaultDisplayRadix |
1070 |
||
92 | 1071 |
" |
1072 |
Integer displayRadix:16. 12345 |
|
1073 |
Integer displayRadix:2. 12345 |
|
1074 |
Integer displayRadix:10. 12345 |
|
1075 |
" |
|
49 | 1076 |
! |
1077 |
||
701 | 1078 |
errorPrintHex |
1079 |
"print the receiver as a hex number on the standard error stream" |
|
1080 |
||
1081 |
(self printStringRadix:16) errorPrint |
|
1082 |
! |
|
1 | 1083 |
|
701 | 1084 |
hexPrintString |
1085 |
"return a hex string representation of the receiver" |
|
1086 |
||
1087 |
^ self printStringRadix:16 |
|
1088 |
! |
|
1089 |
||
2408 | 1090 |
hexPrintString:size |
1091 |
"return a hex string representation of the receiver, |
|
1092 |
padded to size characters" |
|
1093 |
||
1094 |
^ (self printStringRadix:16) leftPaddedTo:size with:$0 |
|
1095 |
||
1096 |
"Created: 18.2.1997 / 13:32:33 / cg" |
|
1097 |
! |
|
1098 |
||
701 | 1099 |
printHex |
1100 |
"print the receiver as a hex number on the standard output stream" |
|
1 | 1101 |
|
701 | 1102 |
(self printStringRadix:16) print |
1103 |
! |
|
1104 |
||
1105 |
printOn:aStream |
|
1106 |
"append a printed description of the receiver to aStream" |
|
1107 |
||
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1108 |
self printOn:aStream base:10 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1109 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1110 |
"Modified: / 20.1.1998 / 14:10:45 / stefan" |
701 | 1111 |
! |
1112 |
||
1431
243d233bffa5
printOn:radix: -> printOn:base: (ST-80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
1422
diff
changeset
|
1113 |
printOn:aStream base:base |
1 | 1114 |
"return a string representation of the receiver in the specified |
1115 |
radix (without the initial XXr)" |
|
1116 |
||
3136
91dbf1ea13a6
print in junks of 6 digits (instead of 8 digits)
Claus Gittinger <cg@exept.de>
parents:
3135
diff
changeset
|
1117 |
|num s divMod mod r r2 r4 nD numN| |
1 | 1118 |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1119 |
(base between:2 and:36) ifFalse:[ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1120 |
self error:'invalid base'. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1121 |
^ self printOn:aStream base:10 |
54 | 1122 |
]. |
1123 |
||
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1124 |
(self = 0) ifTrue:[aStream nextPut:$0. ^ self]. |
1 | 1125 |
(self < 0) ifTrue:[ |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1126 |
aStream nextPut:$- . |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1127 |
num := self negated. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1128 |
] ifFalse:[ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1129 |
num := self. |
1 | 1130 |
]. |
92 | 1131 |
|
1132 |
" |
|
1133 |
claus: changed it from a recursive algorithm; |
|
1134 |
(it used to trigger stack-overflow exceptions when printing |
|
1135 |
3000 factorial ...) |
|
1136 |
" |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1137 |
"/ leftPart := num // base. |
92 | 1138 |
"/ (leftPart ~= 0) ifTrue:[ |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1139 |
"/ leftPart printOn:aStream base:base. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1140 |
"/ aStream nextPut:(Character digitValue:(num \\ base). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1141 |
"/ ^ self |
92 | 1142 |
"/ ]. |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1143 |
"/ aStream nextPut:(Character digitValue:num). |
2951 | 1144 |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1145 |
"/ instead of computing the quotient and remainder |
3136
91dbf1ea13a6
print in junks of 6 digits (instead of 8 digits)
Claus Gittinger <cg@exept.de>
parents:
3135
diff
changeset
|
1146 |
"/ against radix, do it in junks of 5 or 6 digits. |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1147 |
"/ This reduces the number of LargeInt-divisions |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1148 |
"/ by that factor (turning them into smallInt divisions |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1149 |
"/ within that junk) and speeds up the conversions noticably. |
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
1150 |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1151 |
r2 := base*base. "/ radix^2 |
3138 | 1152 |
r4 := r2*r2. "/ radix^4 |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1153 |
base <= 10 ifTrue:[ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1154 |
r := r4*r2. "/ radix^6 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1155 |
nD := 6. |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1156 |
] ifFalse:[ |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1157 |
r := r4*base. "/ radix^5 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1158 |
nD := 5. |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1159 |
]. |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1160 |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1161 |
"get a Stream with space for the digits we are going to print. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1162 |
We need ((num log:base) ceiling) digits, which is equivalent |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1163 |
to ((num log:2)/(base log:2) ceiling) |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1164 |
" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1165 |
s := WriteStream on:(String new:((num highBit // base highBit - 1) + 1)). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1166 |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1167 |
[num >= r] whileTrue:[ |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1168 |
"/ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1169 |
"/ chop off nD digits. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1170 |
"/ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1171 |
divMod := num divMod:r. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1172 |
num := divMod at:1. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1173 |
numN := divMod at:2. |
2951 | 1174 |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1175 |
"/ process them |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1176 |
nD timesRepeat:[ |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1177 |
divMod := numN divMod:base. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1178 |
numN := divMod at:1. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1179 |
mod := divMod at:2. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1180 |
s nextPut:(Character digitValue:mod). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1181 |
]. |
2951 | 1182 |
]. |
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
1183 |
|
92 | 1184 |
[num ~= 0] whileTrue:[ |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1185 |
divMod := num divMod:base. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1186 |
num := divMod at:1. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1187 |
mod := divMod at:2. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1188 |
s nextPut:(Character digitValue:mod). |
1 | 1189 |
]. |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1190 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1191 |
aStream nextPutAll:(s contents reverse). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1192 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1193 |
" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1194 |
3000 factorial printOn:Transcript base:10 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1195 |
10 printOn:Transcript base:3 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1196 |
31 printOn:Transcript base:3 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1197 |
-20 printOn:Transcript base:16 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1198 |
-20 printOn:Transcript base:10 |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1199 |
" |
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
1200 |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1201 |
"Modified: / 17.11.1997 / 16:27:45 / cg" |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1202 |
"Modified: / 20.1.1998 / 18:05:02 / stefan" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1203 |
! |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1204 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1205 |
printOn:aStream radix:base |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1206 |
"append a printed description of the receiver to aStream. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1207 |
The receiver is printed in radix base (instead of the default, 10). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1208 |
This method is obsoleted by #printOn:base:, which is ST-80 compatible." |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1209 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1210 |
self printOn:aStream base:base |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1211 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1212 |
"Modified: / 20.5.1996 / 11:54:10 / cg" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1213 |
"Modified: / 20.1.1998 / 14:10:45 / stefan" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1214 |
! |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1215 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1216 |
printStringRadix:base |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1217 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1218 |
|s| |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1219 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1220 |
s := WriteStream on:(String new:20). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1221 |
self printOn:s base:base. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1222 |
^ s contents |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1223 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1224 |
"Created: / 19.1.1998 / 17:20:58 / stefan" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1225 |
"Modified: / 20.1.1998 / 14:10:54 / stefan" |
1 | 1226 |
! |
1227 |
||
1228 |
printStringRadix:aRadix size:sz fill:fillCharacter |
|
1229 |
"return a string representation of the receiver in the specified |
|
1230 |
radix. The string is padded on the left with fillCharacter to make |
|
1231 |
its size as specified in sz." |
|
1232 |
||
2951 | 1233 |
|s actualSize| |
1 | 1234 |
|
1235 |
s := self printStringRadix:aRadix. |
|
2951 | 1236 |
actualSize := s size. |
1237 |
actualSize < sz ifTrue:[ |
|
1238 |
s := ((String new:(sz - actualSize)) atAllPut:fillCharacter) , s |
|
1 | 1239 |
]. |
1240 |
^ s |
|
1241 |
||
92 | 1242 |
" |
1243 |
1024 printStringRadix:16 size:4 fill:$0 |
|
1244 |
1024 printStringRadix:2 size:16 fill:$. |
|
1245 |
1024 printStringRadix:16 size:8 fill:(Character space) |
|
1246 |
" |
|
216 | 1247 |
! |
1248 |
||
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1249 |
radixPrintStringRadix:base |
701 | 1250 |
"return a string representation of the receiver in the specified |
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1251 |
base; prepend XXr to the string" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1252 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1253 |
|s| |
701 | 1254 |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1255 |
s := WriteStream on:(String new:20). |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1256 |
base printOn:s. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1257 |
s nextPut:$r. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1258 |
self printOn:s base:base. |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1259 |
^ s contents |
216 | 1260 |
|
701 | 1261 |
" |
1262 |
31 radixPrintStringRadix:2 |
|
1263 |
31 radixPrintStringRadix:3 |
|
1264 |
31 radixPrintStringRadix:36 |
|
1265 |
" |
|
3188
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1266 |
|
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1267 |
"Created: / 19.1.1998 / 17:38:00 / stefan" |
301eaf46b9e4
Use #printOn: instead of #printString as base method.
Stefan Vogel <sv@exept.de>
parents:
3162
diff
changeset
|
1268 |
"Modified: / 20.1.1998 / 14:11:03 / stefan" |
1 | 1269 |
! ! |
1270 |
||
701 | 1271 |
!Integer methodsFor:'queries'! |
202 | 1272 |
|
701 | 1273 |
digitAt:n |
1274 |
"return the n-th byte of the binary representation. |
|
1275 |
This is a very stupid implementation, and should be redefined in |
|
1276 |
concrete subclasses." |
|
202 | 1277 |
|
701 | 1278 |
|num count| |
569
7134eb78cf48
readFrom:onError: can now also read from a string
Claus Gittinger <cg@exept.de>
parents:
530
diff
changeset
|
1279 |
|
701 | 1280 |
num := self. |
1281 |
count := n. |
|
1282 |
[count > 1] whileTrue:[ |
|
1283 |
num := num // 256. |
|
1284 |
count := count - 1 |
|
202 | 1285 |
]. |
701 | 1286 |
^ num \\ 256 |
159 | 1287 |
|
1288 |
" |
|
701 | 1289 |
16r44332211 digitAt:1 |
1290 |
16r44332211 digitAt:2 |
|
1291 |
16r44332211 digitAt:3 |
|
1292 |
16r44332211 digitAt:4 |
|
1293 |
16r44332211 digitAt:5 |
|
1294 |
16r00332211 digitAt:4 |
|
1295 |
16r00332211 digitAt:5 |
|
159 | 1296 |
" |
1 | 1297 |
! |
1298 |
||
701 | 1299 |
digitLength |
1300 |
"return the number of bytes needed for the binary representation |
|
2816 | 1301 |
of the receiver. |
1302 |
This method is redefined in concrete classes - the fallback here is |
|
1303 |
never really used." |
|
701 | 1304 |
|
1305 |
^ (self log:256) ceiling asInteger |
|
2816 | 1306 |
|
1307 |
"Modified: 31.7.1997 / 13:19:06 / cg" |
|
701 | 1308 |
! |
1309 |
||
1310 |
isInteger |
|
1311 |
"return true, if the receiver is some kind of integer number" |
|
1312 |
||
1313 |
^ true |
|
3036 | 1314 |
! |
1315 |
||
1316 |
isPowerOfTwo |
|
1317 |
"return true, if the receiver is a power of 2" |
|
1318 |
||
1319 |
^ (self bitAnd:(self - 1)) == 0 |
|
1320 |
||
1321 |
" |
|
1322 |
0 isPowerOfTwo |
|
1323 |
1 isPowerOfTwo |
|
1324 |
2 isPowerOfTwo |
|
1325 |
3 isPowerOfTwo |
|
1326 |
4 isPowerOfTwo |
|
1327 |
16r8000000000000000 isPowerOfTwo |
|
1328 |
16r8000000000000001 isPowerOfTwo |
|
1329 |
" |
|
1330 |
||
1331 |
"Modified: 15.10.1997 / 18:43:49 / cg" |
|
701 | 1332 |
! ! |
202 | 1333 |
|
2458 | 1334 |
!Integer methodsFor:'special bit operators'! |
1335 |
||
1336 |
bitAnd_32:anInteger |
|
1337 |
"return a C-semantic 32bit locical-and of the receiver and |
|
1338 |
the argument. Both must be either Small- or LargeIntegers. |
|
1339 |
This (nonstandard) specialized method is provided to allow simulation of |
|
1340 |
and operations with C semantics." |
|
1341 |
||
1342 |
%{ /* NOCONTEXT */ |
|
1343 |
int val1, val2, rslt; |
|
1344 |
||
1345 |
if (__isSmallInteger(self)) { |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1346 |
val1 = __intVal(self); |
2458 | 1347 |
} else if (__isLargeInteger(self)) { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1348 |
val1 = __longIntVal(self); |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1349 |
if (!val1) goto bad; |
2458 | 1350 |
} else { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1351 |
goto bad; |
2458 | 1352 |
} |
1353 |
if (__isSmallInteger(anInteger)) { |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1354 |
val2 = __intVal(anInteger); |
2458 | 1355 |
} else if (__isLargeInteger(anInteger)) { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1356 |
val2 = __longIntVal(anInteger); |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1357 |
if (!val2) goto bad; |
2458 | 1358 |
} else { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1359 |
goto bad; |
2458 | 1360 |
} |
1361 |
rslt = val1 & val2; |
|
1362 |
RETURN(__MKINT(rslt)); |
|
1363 |
||
1364 |
bad: ; |
|
1365 |
%}. |
|
1366 |
self primitiveFailed. |
|
1367 |
! |
|
1368 |
||
1369 |
bitOr_32:anInteger |
|
1370 |
"return a C-semantic 32bit locical-or of the receiver and |
|
1371 |
the argument. Both must be either Small- or LargeIntegers. |
|
1372 |
This (nonstandard) specialized method is provided to allow simulation of |
|
1373 |
and operations with C semantics." |
|
1374 |
||
1375 |
%{ /* NOCONTEXT */ |
|
1376 |
int val1, val2, rslt; |
|
1377 |
||
1378 |
if (__isSmallInteger(self)) { |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1379 |
val1 = __intVal(self); |
2458 | 1380 |
} else if (__isLargeInteger(self)) { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1381 |
val1 = __longIntVal(self); |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1382 |
if (!val1) goto bad; |
2458 | 1383 |
} else { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1384 |
goto bad; |
2458 | 1385 |
} |
1386 |
if (__isSmallInteger(anInteger)) { |
|
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1387 |
val2 = __intVal(anInteger); |
2458 | 1388 |
} else if (__isLargeInteger(anInteger)) { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1389 |
val2 = __longIntVal(anInteger); |
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1390 |
if (!val2) goto bad; |
2458 | 1391 |
} else { |
3121
91de0211651c
even faster largeInt printString, by doing it in bigger junks (8digits a time)
Claus Gittinger <cg@exept.de>
parents:
3060
diff
changeset
|
1392 |
goto bad; |
2458 | 1393 |
} |
1394 |
rslt = val1 | val2; |
|
1395 |
RETURN(__MKINT(rslt)); |
|
1396 |
||
1397 |
bad: ; |
|
1398 |
%}. |
|
1399 |
self primitiveFailed. |
|
1400 |
! ! |
|
1401 |
||
701 | 1402 |
!Integer methodsFor:'truncation & rounding'! |
1403 |
||
1404 |
ceiling |
|
1558 | 1405 |
"return the smallest integer which is larger or equal to the receiver. |
1406 |
For integers, this is the receiver itself." |
|
345 | 1407 |
|
701 | 1408 |
^ self |
1558 | 1409 |
|
1410 |
"Modified: 18.7.1996 / 12:44:06 / cg" |
|
701 | 1411 |
! |
345 | 1412 |
|
701 | 1413 |
compressed |
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1414 |
"if the receiver can be represented as a SmallInteger, return |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1415 |
a SmallInteger with my value; otherwise return self with leading |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1416 |
zeros removed. This method is redefined in LargeInteger." |
701 | 1417 |
|
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1418 |
^ self |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1419 |
|
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1420 |
"Modified: 5.11.1996 / 14:07:41 / cg" |
202 | 1421 |
! |
1422 |
||
701 | 1423 |
floor |
1558 | 1424 |
"return the largest integer which is smaller or equal to the receiver. |
1425 |
For integers, this is the receiver itself." |
|
701 | 1426 |
|
1427 |
^ self |
|
1558 | 1428 |
|
1429 |
"Modified: 18.7.1996 / 12:44:00 / cg" |
|
701 | 1430 |
! |
202 | 1431 |
|
1866
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1432 |
fractionPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1433 |
"return a number with value from digits after the decimal point. |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1434 |
(i.e. the receiver minus its truncated value) |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1435 |
Since integers have no fraction, return 0 here." |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1436 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1437 |
^ 0 |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1438 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1439 |
" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1440 |
1234.56789 fractionPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1441 |
1.2345e6 fractionPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1442 |
1000 fractionPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1443 |
10000000000000000 fractionPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1444 |
" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1445 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1446 |
"Modified: 4.11.1996 / 20:27:44 / cg" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1447 |
! |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1448 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1449 |
integerPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1450 |
"return a number with value from digits before the decimal point. |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1451 |
(i.e. the receivers truncated value) |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1452 |
Since integers have no fraction, return the receiver here." |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1453 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1454 |
^ self |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1455 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1456 |
" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1457 |
1234.56789 integerPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1458 |
1.2345e6 integerPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1459 |
1000 integerPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1460 |
10000000000000000 integerPart |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1461 |
" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1462 |
|
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1463 |
"Modified: 4.11.1996 / 20:28:22 / cg" |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1464 |
! |
225afe414934
added fractionPart & integerPart for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1842
diff
changeset
|
1465 |
|
701 | 1466 |
normalize |
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1467 |
"if the receiver can be represented as a SmallInteger, return |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1468 |
a SmallInteger with my value; otherwise return self with leading |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1469 |
zeros removed. |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1470 |
This method is left for backward compatibility - it has been |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1471 |
renamed to #compressed for ST-80 compatibility." |
1 | 1472 |
|
1883
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1473 |
^ self compressed |
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1474 |
|
d3fbf4b36be7
renamed #normalize to #compressed (ST_80 compat)
Claus Gittinger <cg@exept.de>
parents:
1866
diff
changeset
|
1475 |
"Modified: 5.11.1996 / 14:08:24 / cg" |
701 | 1476 |
! |
1 | 1477 |
|
701 | 1478 |
rounded |
1479 |
"return the receiver rounded toward the next Integer - |
|
1558 | 1480 |
for integers this is the receiver itself." |
701 | 1481 |
|
1482 |
^ self |
|
1558 | 1483 |
|
1484 |
"Modified: 18.7.1996 / 12:44:24 / cg" |
|
701 | 1485 |
! |
69 | 1486 |
|
701 | 1487 |
truncated |
1488 |
"return the receiver truncated towards zero - |
|
1558 | 1489 |
for integers this is the receiver itself." |
159 | 1490 |
|
701 | 1491 |
^ self |
1558 | 1492 |
|
1493 |
"Modified: 18.7.1996 / 12:44:33 / cg" |
|
701 | 1494 |
! ! |
569
7134eb78cf48
readFrom:onError: can now also read from a string
Claus Gittinger <cg@exept.de>
parents:
530
diff
changeset
|
1495 |
|
1842
b28609c73839
added divMod: for faster largeNumber printString generation.
Claus Gittinger <cg@exept.de>
parents:
1700
diff
changeset
|
1496 |
!Integer class methodsFor:'documentation'! |
701 | 1497 |
|
1498 |
version |
|
3395
02f47135d80f
pass messageSend as parameter to domainError exception
Claus Gittinger <cg@exept.de>
parents:
3374
diff
changeset
|
1499 |
^ '$Header: /cvs/stx/stx/libbasic/Integer.st,v 1.80 1998-04-22 19:12:33 cg Exp $' |
1 | 1500 |
! ! |