diff options
Diffstat (limited to 'py/smallint.h')
| -rw-r--r-- | py/smallint.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/py/smallint.h b/py/smallint.h index 9c1de42ad0..36b55f9197 100644 --- a/py/smallint.h +++ b/py/smallint.h @@ -26,6 +26,11 @@ // Functions for small integer arithmetic +// In SMALL_INT, next-to-highest bits is used as sign, so both must match for value in range +#define MP_SMALL_INT_MIN ((mp_small_int_t)(((machine_int_t)WORD_MSBIT_HIGH) >> 1)) +#define MP_SMALL_INT_MAX ((mp_small_int_t)(~(MP_SMALL_INT_MIN))) +#define MP_SMALL_INT_FITS(n) ((((n) ^ ((n) << 1)) & WORD_MSBIT_HIGH) == 0) + bool mp_small_int_mul_overflow(machine_int_t x, machine_int_t y); machine_int_t mp_small_int_modulo(machine_int_t dividend, machine_int_t divisor); machine_int_t mp_small_int_floor_divide(machine_int_t num, machine_int_t denom); |