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Fix big_int_shr

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This commit is contained in:
gingerBill
2018-07-28 00:48:36 +01:00
parent c3c7834246
commit e34a9e6185
1 changed files with 5 additions and 3 deletions
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src/big_int.cpp
+5 -3
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@@ -41,7 +41,7 @@ gb_inline gbAllocator big_int_allocator(void) {
}
void big_int_alloc(BigInt *dst, isize word_len, isize word_cap) {
GB_ASSERT(word_len <= word_cap);
GB_ASSERT_MSG(word_len <= word_cap, "%td %td", word_len, word_cap);
if (word_cap < dst->len) {
dst->len = cast(i32)word_len;
} else {
@@ -605,8 +605,10 @@ void big_int_shr(BigInt *dst, BigInt const *x, BigInt const *y) {
return;
}
big_int_alloc(dst, cast(i32)(x->len - word_shift_len), dst->len);
GB_ASSERT(dst->len > 1);
i32 len = cast(i32)(x->len - word_shift_len);
i32 cap = gb_max(len, dst->len);
big_int_alloc(dst, len, cap);
GB_ASSERT(dst->len >= 1);
u64 carry = 0;
for (i32 src_idx = x->len - 1; src_idx >= 0; src_idx--) {