diff options
Diffstat (limited to 'py/smallint.h')
| -rw-r--r-- | py/smallint.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/py/smallint.h b/py/smallint.h index 584e0018d..e50f98651 100644 --- a/py/smallint.h +++ b/py/smallint.h @@ -68,7 +68,10 @@ // The number of bits in a MP_SMALL_INT including the sign bit. #define MP_SMALL_INT_BITS (MP_IMAX_BITS(MP_SMALL_INT_MAX) + 1) -bool mp_small_int_mul_overflow(mp_int_t x, mp_int_t y); +// Multiply two small ints. +// If returns false, the correct result is stored in 'res' +// If returns true, the multiplication would have overflowed. 'res' is unchanged. +bool mp_small_int_mul_overflow(mp_int_t x, mp_int_t y, mp_int_t *res); mp_int_t mp_small_int_modulo(mp_int_t dividend, mp_int_t divisor); mp_int_t mp_small_int_floor_divide(mp_int_t num, mp_int_t denom); |