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authorDenys Vlasenko <vda.linux@googlemail.com>2018-12-18 12:43:21 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2018-12-18 12:43:21 +0100
commit71c82d1d8ca0617290600050728feda906878115 (patch)
tree5f5f3685b46ef986083daa2df033d003a33fbd3c
parente2e6ffd3c5e229ef386ca22e467c6553e570c55a (diff)
downloadbusybox-71c82d1d8ca0617290600050728feda906878115.tar.gz
bc: rewrite another for() loop
function old new delta zbc_num_d 570 563 -7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--miscutils/bc.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index 6c63c1703..0cd8ba6b4 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -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);