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Integer Division (div)

Software integer division routines for platforms lacking hardware divide instructions (e.g., some ARM cores).

API​

uint32_t udiv32(uint32_t value, uint32_t divisor);
uint32_t umod32(uint32_t value, uint32_t divisor);
int32_t sdiv32(int32_t value, int32_t divisor);
int32_t smod32(int32_t value, int32_t divisor);
uint64_t udiv64(uint64_t value, uint64_t divisor);
uint64_t umod64(uint64_t value, uint64_t divisor);
int64_t sdiv64(int64_t value, int64_t divisor);
int64_t smod64(int64_t value, int64_t divisor);
  • udiv32/64 — Unsigned division
  • umod32/64 — Unsigned modulo
  • sdiv32/64 — Signed division
  • smod32/64 — Signed modulo

Example​

32-bit Unsigned Division​

uint32_t q = udiv32(100, 7);
uint32_t r = umod32(100, 7);

64-bit Signed Division​

int64_t q = sdiv64(-1000000LL, 37LL);
int64_t r = smod64(-1000000LL, 37LL);