Robin Becker schrieb: > Hi, just trying to avoid wheel reinvention. I have need of an unsigned > 32 bit arithmetic type to carry out a checksum operation and wondered if > anyone had already defined such a beast. > > Our current code works with 32 bit cpu's, but is failing with 64 bit > comparisons; it's clearly wrong as we are comparing a number with a > negated number; the bits might drop off in 32 bits, but not in 64.
Not sure what operations you are doing: In Python, bits never drop off (at least not in recent versions). If you need to drop bits, you need to do so explicitly, by using the bit mask operations. I could tell you more if you'd tell us what the specific operations are. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
