bc: placate gcc (it thinks 's' can be uninitialized here)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -2201,8 +2201,8 @@ static BC_STATUS zbc_num_sqrt(BcNum *a, BcNum *restrict b, size_t scale)
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BcStatus s;
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BcNum num1, num2, half, f, fprime, *x0, *x1, *temp;
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BcDig half_digs[1];
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size_t pow, len, digs, digs1, resrdx, req, times = 0;
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ssize_t cmp = 1, cmp1 = SSIZE_MAX, cmp2 = SSIZE_MAX;
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size_t pow, len, digs, digs1, resrdx, req, times;
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ssize_t cmp, cmp1, cmp2;
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req = BC_MAX(scale, a->rdx) + ((BC_NUM_INT(a) + 1) >> 1) + 1;
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bc_num_expand(b, req);
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@ -2255,11 +2255,12 @@ static BC_STATUS zbc_num_sqrt(BcNum *a, BcNum *restrict b, size_t scale)
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x0->rdx -= pow;
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}
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x0->rdx = digs = digs1 = 0;
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x0->rdx = digs = digs1 = times = 0;
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resrdx = scale + 2;
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len = BC_NUM_INT(x0) + resrdx - 1;
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while (cmp != 0 || digs < len) {
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len = x0->len + resrdx - 1;
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cmp = 1;
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cmp1 = cmp2 = SSIZE_MAX;
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do {
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s = zbc_num_div(a, x0, &f, resrdx);
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if (s) goto err;
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s = zbc_num_add(x0, &f, &fprime, resrdx);
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@ -2284,11 +2285,12 @@ static BC_STATUS zbc_num_sqrt(BcNum *a, BcNum *restrict b, size_t scale)
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temp = x0;
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x0 = x1;
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x1 = temp;
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}
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} while (cmp != 0 || digs < len);
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bc_num_copy(b, x0);
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scale -= 1;
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if (b->rdx > scale) bc_num_truncate(b, b->rdx - scale);
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if (b->rdx > scale)
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bc_num_truncate(b, b->rdx - scale);
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err:
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bc_num_free(&fprime);
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bc_num_free(&f);
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