Function divmod12

libraries/fast_math/fast_math.cpp:61–68

void divmod12(uint32_t in, uint32_t *div, uint8_t *mod)
{
  uint32_t d;
  uint8_t  m;
  divmod3(in, &d, &m);
  *div = d >> 2;
  *mod = m + (d & 0x03) * 3;
}


void divmod24(uint32_t in, uint32_t *div, uint8_t *mod)