71c82d1d8
Denys Vlasenko
2018-12-18
Subject
bc: rewrite another for() loop
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miscutils/bc.c+7 -3
| @@ -1933,7 +1933,6 @@ static FAST_FUNC BC_STATUS zbc_num_d(BcNum *a, BcNum *b, BcNum *restrict c, size | |
| BcDig *n, *p, q; | |
| size_t len, end, i; | |
| BcNum cp; | |
| - | bool zero = true; |
| if (b->len == 0) | |
| RETURN_STATUS(bc_error("divide by zero")); | |
| @@ -1961,8 +1960,13 @@ static FAST_FUNC BC_STATUS zbc_num_d(BcNum *a, BcNum *b, BcNum *restrict c, size | |
| if (scale > cp.rdx) bc_num_extend(&cp, scale - cp.rdx); | |
| if (b->rdx == b->len) { | |
| - | for (i = 0; zero && i < len; ++i) zero = !b->num[len - i - 1]; |
| - | len -= i - 1; |
| + | for (;;) { |
| + | if (len == 0) break; |
| + | len--; |
| + | if (b->num[len] != 0) |
| + | break; |
| + | } |
| + | len++; |
| } | |
| if (cp.cap == cp.len) bc_num_expand(&cp, cp.len + 1); | |