bc: bc_num_k(): move carry,i,j,len to inner scope
This might help compiler function old new delta bc_num_k 957 971 +14 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -1639,16 +1639,16 @@ static BcStatus bc_num_k(BcNum *restrict a, BcNum *restrict b,
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BcNum *restrict c)
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{
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BcStatus s;
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int carry;
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size_t i, j, len, max = BC_MAX(a->len, b->len), max2 = (max + 1) / 2;
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size_t max = BC_MAX(a->len, b->len), max2 = (max + 1) / 2;
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BcNum l1, h1, l2, h2, m2, m1, z0, z1, z2, temp;
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bool aone = BC_NUM_ONE(a);
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bool aone;
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if (a->len == 0 || b->len == 0) {
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bc_num_zero(c);
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return BC_STATUS_SUCCESS;
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}
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else if (aone || BC_NUM_ONE(b)) {
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aone = BC_NUM_ONE(a);
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if (aone || BC_NUM_ONE(b)) {
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bc_num_copy(c, aone ? b : a);
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return BC_STATUS_SUCCESS;
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}
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@ -1656,13 +1656,17 @@ static BcStatus bc_num_k(BcNum *restrict a, BcNum *restrict b,
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if (a->len + b->len < BC_NUM_KARATSUBA_LEN ||
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a->len < BC_NUM_KARATSUBA_LEN || b->len < BC_NUM_KARATSUBA_LEN)
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{
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size_t i, j, len;
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int carry;
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bc_num_expand(c, a->len + b->len + 1);
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memset(c->num, 0, sizeof(BcDig) * c->cap);
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c->len = carry = len = 0;
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c->len = len = 0;
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for (i = 0; i < b->len; ++i) {
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carry = 0;
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for (j = 0; j < a->len; ++j) {
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int in = (int) c->num[i + j];
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in += ((int) a->num[j]) * ((int) b->num[i]) + carry;
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@ -1672,7 +1676,6 @@ static BcStatus bc_num_k(BcNum *restrict a, BcNum *restrict b,
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c->num[i + j] += (BcDig) carry;
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len = BC_MAX(len, i + j + !!carry);
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carry = 0;
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}
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c->len = len;
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