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- bookworm 0.32-4
- testing 0.32-4
- unstable 0.32-4
- experimental 0.32-4.1~exp1
umult64(3) | Library Functions Manual | umult64(3) |
NAME¶
umult64 - integer multiplication with overflow checking
SYNTAX¶
#include <libowfat/safemult.h>
int umult64(uint64 a,uint64 b,uint64* c);
DESCRIPTION¶
umult64 does c=a*b and returns 1.
In case of an integer overflow, umult64 leaves c alone and returns 0.