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py/objint: Allow to print long-long ints without using the heap.

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Some stack is allocated to format ints, and when the int implementation uses
long-long there should be additional stack allocated compared with the other
cases.  This patch uses the existing "fmt_int_t" type to determine the
amount of stack to allocate.
This commit is contained in:
Damien George 2017-03-14 14:54:20 +11:00
parent 4f29b315a6
commit d1ae6ae080
1 changed files with 7 additions and 7 deletions
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14
py/objint.c
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@ -127,11 +127,17 @@ mp_fp_as_int_class_t mp_classify_fp_as_int(mp_float_t val) {
#undef MP_FLOAT_EXP_SHIFT_I32
#endif
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
typedef mp_longint_impl_t fmt_int_t;
#else
typedef mp_int_t fmt_int_t;
#endif
void mp_obj_int_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
(void)kind;
// The size of this buffer is rather arbitrary. If it's not large
// enough, a dynamic one will be allocated.
char stack_buf[sizeof(mp_int_t) * 4];
char stack_buf[sizeof(fmt_int_t) * 4];
char *buf = stack_buf;
size_t buf_size = sizeof(stack_buf);
size_t fmt_size;
@ -144,12 +150,6 @@ void mp_obj_int_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t
}
}
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
typedef mp_longint_impl_t fmt_int_t;
#else
typedef mp_int_t fmt_int_t;
#endif
STATIC const uint8_t log_base2_floor[] = {
0, 1, 1, 2,
2, 2, 2, 3,