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mruby-bigint: Unify limb_zero and limb_zero_range functions

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Removed the redundant limb_zero_range function and replaced its call
sites with limb_zero. This refactoring reduces code duplication and
improves maintainability without changing functionality.

Co-authored-by: Gemini <gemini@google.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2025-07-31 10:26:38 +09:00
parent 9ac70a72e0
commit c581aa1288
1 changed files with 2 additions and 11 deletions
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mrbgems/mruby-bigint/core/bigint.c
+2 -11
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@@ -967,15 +967,6 @@ limb_copy(mp_limb *dest, const mp_limb *src, size_t n)
}
}
/* Zero limbs: dest[0..n-1] = 0 */
static void
limb_zero_range(mp_limb *dest, size_t n)
{
if (n > 0) {
memset(dest, 0, n * sizeof(mp_limb));
}
}
/* Add limbs at offset: dest[offset..offset+n-1] += src[0..n-1] */
static void
limb_add_at(mp_limb *dest, size_t dest_len, const mp_limb *src, size_t n, size_t offset)
@@ -1015,7 +1006,7 @@ static void
mpz_mul_basic_limbs(mp_limb *result, const mp_limb *x, size_t x_len,
const mp_limb *y, size_t y_len)
{
limb_zero_range(result, x_len + y_len);
limb_zero(result, x_len + y_len);
for (size_t i = 0; i < x_len; i++) {
if (x[i] == 0) continue;
@@ -1150,7 +1141,7 @@ mpz_mul_karatsuba(mpz_ctx_t *ctx, mp_limb *result,
/* Step 4: Final assembly: result = z0 + z1*B + z2*B^2 */
size_t result_len = x_len + y_len;
limb_zero_range(result, result_len);
limb_zero(result, result_len);
limb_copy(result, z0, z0_len);
limb_add_at(result, result_len, z1, z1_len, half);
limb_add_at(result, result_len, z2, z2_len, 2 * half);