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py: Use MP_SMALL_INT_POSITIVE_MASK to check if uint fits in a small int. 

Using the original WORD_MSBIT_HIGH-logic resulted in errors when the
object model is not REPR_A or REPR_C.
This commit is contained in:
Damien George 2016-03-10 21:52:56 +00:00
parent 5239a8a82b
commit 9ae51257bd
3 changed files with 9 additions and 9 deletions
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6
py/objint.c
View File

@ -311,9 +311,9 @@ mp_obj_t mp_obj_new_int_from_ull(unsigned long long val) {
}
mp_obj_t mp_obj_new_int_from_uint(mp_uint_t value) {
// SMALL_INT accepts only signed numbers, of one bit less size
// then word size, which totals 2 bits less for unsigned numbers.
if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
// SMALL_INT accepts only signed numbers, so make sure the input
// value fits completely in the small-int positive range.
if ((value & ~MP_SMALL_INT_POSITIVE_MASK) == 0) {
return MP_OBJ_NEW_SMALL_INT(value);
}
nlr_raise(mp_obj_new_exception_msg(&mp_type_OverflowError, "small int overflow"));

6
py/objint_longlong.c
View File

@ -223,9 +223,9 @@ mp_obj_t mp_obj_new_int(mp_int_t value) {
}
mp_obj_t mp_obj_new_int_from_uint(mp_uint_t value) {
// SMALL_INT accepts only signed numbers, of one bit less size
// than word size, which totals 2 bits less for unsigned numbers.
if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
// SMALL_INT accepts only signed numbers, so make sure the input
// value fits completely in the small-int positive range.
if ((value & ~MP_SMALL_INT_POSITIVE_MASK) == 0) {
return MP_OBJ_NEW_SMALL_INT(value);
}
return mp_obj_new_int_from_ll(value);

6
py/objint_mpz.c
View File

@ -357,9 +357,9 @@ mp_obj_t mp_obj_new_int_from_ull(unsigned long long val) {
}
mp_obj_t mp_obj_new_int_from_uint(mp_uint_t value) {
// SMALL_INT accepts only signed numbers, of one bit less size
// than word size, which totals 2 bits less for unsigned numbers.
if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
// SMALL_INT accepts only signed numbers, so make sure the input
// value fits completely in the small-int positive range.
if ((value & ~MP_SMALL_INT_POSITIVE_MASK) == 0) {
return MP_OBJ_NEW_SMALL_INT(value);
}
return mp_obj_new_int_from_ull(value);