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/* chksum.h */
/* calcchecksum() was converted to a macro for effectivity reasons. */
/* Don't (!!) give it an argument that has to be evaluated. This */
/* is guaranteed to slow it down. */
/* Update file checksums. */
#define calcchecksum(ch) \
{ \
extern LONG Ceor, Csum, Crot; \
\
Ceor ^= ch; \
Csum += ch + 1; \
\
if (Crot & 0x80000000L) \
{ \
Crot <<= 1; \
Crot ++; \
} \
else \
Crot <<= 1; \
\
Crot += ch; \
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.