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bigint.c (mpz_set_int): fixed a bug in integer size check.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-08-26 12:55:29 +09:00
parent 6598732892
commit 62c36c03b3
1 changed files with 3 additions and 6 deletions
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mrbgems/mruby-bigint/core/bigint.c
+3 -6
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@@ -65,9 +65,6 @@ mpz_init_set(mrb_state *mrb, mpz_t *s, mpz_t *t)
mpz_set(mrb, s, t);
}
#define MRB_INT_MSB ((mrb_uint)1 << (MRB_INT_BIT-1))
#define MRB_INT_MASK (MRB_INT_MSB-1)
static void
mpz_set_int(mrb_state *mrb, mpz_t *y, mrb_int v)
{
@@ -87,10 +84,10 @@ mpz_set_int(mrb_state *mrb, mpz_t *y, mrb_int v)
else u = -v;
}
#if MRB_INT_BIT > DIG_SIZE
if ((u & ~MRB_INT_MASK) != 0) {
if ((u & ~DIG_MASK) != 0) {
mpz_realloc(mrb, y, 2);
y->p[1] = (mp_limb)(u >> (MRB_INT_BIT-1));
y->p[0] = (mp_limb)(u & MRB_INT_MASK);
y->p[1] = (mp_limb)HIGH(u);
y->p[0] = (mp_limb)LOW(u);
}
else
#endif