--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MetaNumber.st	Sat Jun 21 12:12:21 2003 +0200
@@ -0,0 +1,123 @@
+"
+ COPYRIGHT (c) 2003 by eXept Software AG
+              All Rights Reserved
+
+ This software is furnished under a license and may be used
+ only in accordance with the terms of that license and with the
+ inclusion of the above copyright notice.   This software may not
+ be provided or otherwise made available to, or used by, any
+ other person.  No title to or ownership of the software is
+ hereby transferred.
+"
+
+"{ Package: 'stx:libbasic' }"
+
+Number subclass:#MetaNumber
+	instanceVariableNames:''
+	classVariableNames:''
+	poolDictionaries:''
+	category:'Magnitude-Numbers'
+!
+
+!MetaNumber class methodsFor:'documentation'!
+
+copyright
+"
+ COPYRIGHT (c) 2003 by eXept Software AG
+              All Rights Reserved
+
+ This software is furnished under a license and may be used
+ only in accordance with the terms of that license and with the
+ inclusion of the above copyright notice.   This software may not
+ be provided or otherwise made available to, or used by, any
+ other person.  No title to or ownership of the software is
+ hereby transferred.
+"
+!
+
+documentation
+"
+    Common behavior for metaNumbers (INF, NaN).
+
+    [author:]
+        Claus Gittinger
+
+    [see also:]
+        Number Infinity NotANumber
+        Float ShortFloat Fraction FixedPoint Integer Complex
+        FloatArray DoubleArray                                                                         
+"
+! !
+
+!MetaNumber methodsFor:'coercing & converting'!
+
+asFloat
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asFloat
+        arguments:#()
+        errorString:'Cannot represent non-finite as float'.
+!
+
+asFraction
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asFraction
+        arguments:#()
+        errorString:'Cannot represent non-finite as fraction'.
+!
+
+asInteger
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asInteger
+        arguments:#()
+        errorString:'Cannot represent non-finite as integer'.
+!
+
+asLargeFloat
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asLargeFloat
+        arguments:#()
+        errorString:'Cannot represent non-finite as float'.
+!
+
+asLongFloat
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asLongFloat
+        arguments:#()
+        errorString:'Cannot represent non-finite as float'.
+!
+
+asShortFloat
+    ^ self class
+        raise:#domainErrorSignal
+        receiver:self
+        selector:#asShortFloat
+        arguments:#()
+        errorString:'Cannot represent non-finite as float'.
+!
+
+coerce:aNumber
+    ^ aNumber asMetaNumber
+!
+
+generality
+    "NaN, INF etc. are more general than scalars, but not more general than
+     vectors (e.g. Points)"
+
+    ^ 105
+! !
+
+!MetaNumber class methodsFor:'documentation'!
+
+version
+    ^ '$Header: /cvs/stx/stx/libbasic/MetaNumber.st,v 1.1 2003-06-21 10:12:21 cg Exp $'
+! !