Function __rt_ffs

src/kservice.c:1093–1096

* @brief This function finds the first bit set (beginning with the least significant bit) * in value and return the index of that bit. * * Bits are numbered starting at 1 (the least significant bit). A return value of * zero from any of these functions means that the argument was zero. * * @param value is the value to find the first bit set in. * * @return return the index of the first bi

 * shall return 0.
 */
int __rt_ffs(int value)
{
    return __lowest_bit_bitmap[(rt_uint32_t)(value & (value - 1) ^ value) % 37];
}
#else
const rt_uint8_t __lowest_bit_bitmap[] =
{