Changeset 5045

Timestamp:

Feb 18, 2008, 6:30:35 PM (15 years ago)

Author:

ole

Message:

Made zlib.crc32 compatible on 64 bit platforms.
The fix used is due to Guido as in ​http://bugs.python.org/issue1202.
In future versions of Python, this will be fixed and the fix unnecessary.

File:

• anuga_core/source/anuga/utilities/system_tools.py (modified) (1 diff)

anuga_core/source/anuga/utilities/system_tools.py

@@ -183 +183 @@
     
     fid = open(filename, 'rb') # Use binary for portability
-    crcval = crc32(fid.read(max_length))
+    x = crc32(fid.read(max_length))
 
     fid.close()
+
+    crcval = x - ((x & 0x80000000) << 1) #Guido's 64 bit fix (http://bugs.python.org/issue1202)
+    
     return crcval