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authorDenys Vlasenko2018-12-18 00:39:24 +0100
committerDenys Vlasenko2018-12-18 03:30:23 +0100
commit4113e1f2cd2f45a95bcb0920bf2e3ee75b906281 (patch)
treeaf0914f73ee6af0d10fe6f4b8fb509905b1678d1 /miscutils
parent57734c926bbfe69d1c3bb6096fbdf428628ed838 (diff)
downloadbusybox-4113e1f2cd2f45a95bcb0920bf2e3ee75b906281.zip
busybox-4113e1f2cd2f45a95bcb0920bf2e3ee75b906281.tar.gz
bc: rewrite bc_num_compare() to be readable
function old new delta bc_num_compare 59 51 -8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/bc.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index e5ad0ed..eaab6ce 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -1475,10 +1475,20 @@ static void bc_num_subArrays(BcDig *restrict a, BcDig *restrict b,
static ssize_t bc_num_compare(BcDig *restrict a, BcDig *restrict b, size_t len)
{
- size_t i;
- int c = 0;
- for (i = len - 1; i < len && !(c = a[i] - b[i]); --i);
- return BC_NUM_NEG(i + 1, c < 0);
+ size_t i = len;
+ for (;;) {
+ int c;
+ if (i == 0)
+ return 0;
+ i--;
+ c = a[i] - b[i];
+ if (c != 0) {
+ i++;
+ if (c < 0)
+ return -i;
+ return i;
+ }
+ }
}
static ssize_t bc_num_cmp(BcNum *a, BcNum *b)