--- a/CRC32Stream.st	Sun Mar 24 21:24:24 2019 +0100
+++ b/CRC32Stream.st	Sun Mar 24 21:24:39 2019 +0100
@@ -1,3 +1,5 @@
+"{ Encoding: utf8 }"
+
 "
  COPYRIGHT (c) 2003 by eXept Software AG
 	      All Rights Reserved
@@ -108,37 +110,41 @@
     Standard CRC method as defined by ISO 3309 [ISO-3309] or ITU-T V.42 [ITU-T-V42].
     The default CRC polynomial employed is
 
-	x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1
-	(or 16r04C11DB7)
+        x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1
+        (or 16r04C11DB7)
 
-    You can also create an instace performing the Castagnoli CRC-32C
+    You can also create an instance performing the Castagnoli CRC-32C
     (used in iSCSI & SCTP [RFC3720], G.hn payload, SSE4.2):
 
-	self newCrc32c
+        self newCrc32c
 
-	poly: 16r1edc6f41
-	= x32 + x28 + x27 + x26 + x25 + x23 + x22 + x20 + x19 + x18 + x14 + x13 + x11 + x10 + x9 + x8 + x6 + 1
+     the polynomial is: 16r1edc6f41
+        = x32 + x28 + x27 + x26 + x25 + x23 + x22 + x20 + x19 + x18 + x14 + x13 + x11 + x10 + x9 + x8 + x6 + 1
 
     Notice that this CRC is also used with PNG images;
     therefore, its performance directly affects png image processing (png write speed).
 
     throughput:
-	235 Mb/s on MacBook Pro (2.6Ghz I7) (360 Mb/s for big chunks)
-	157 Mb/s on a 2.5Ghz 64X2 Athlon 4800+ (64bit)
-	150 Mb/s on 2Ghz Duo
+        235 Mb/s on MacBook Pro (2.6Ghz I7) 
+                (360 Mb/s for big chunks of size 50k)
+                (100 Mb/s for small chunks of size 10)
+        157 Mb/s on a 2.5Ghz 64X2 Athlon 4800+ (64bit)
+        150 Mb/s on 2Ghz Duo
+        
      new:
-	500 Mb/s for castagnoli on MacBook Pro (2.6Ghz I7) (5Gb/s for big chunks)
+        500 Mb/s for castagnoli on MacBook Pro (2.6Ghz I7) 
+                (5Gb/s for big chunks of size 50k)
 
     [author:]
-	Stefan Vogel (stefan@zwerg)
+        Stefan Vogel (stefan@zwerg)
 
     [instance variables:]
 
     [class variables:]
 
     [see also:]
-	SHA1Stream
-	MD5Stream
+        SHA1Stream
+        MD5Stream
 
 "
 !
@@ -386,6 +392,16 @@
     "Created: / 17-03-2019 / 16:45:42 / Claus Gittinger"
 ! !
 
+!CRC32Stream class methodsFor:'queries'!
+
+hashSize
+    "return the size of the hashvalue returned by instances of this class (in bytes)"
+
+    ^ 4
+
+    "Created: / 24-03-2019 / 12:52:47 / Claus Gittinger"
+! !
+
 !CRC32Stream methodsFor:'initialization'!
 
 generatorPolynom:anLSBInteger
@@ -562,3 +578,4 @@
 version_CVS
     ^ '$Header$'
 ! !
+