summaryrefslogtreecommitdiff
path: root/miscutils
diff options
context:
space:
mode:
authorDenys Vlasenko2018-12-18 15:49:42 +0100
committerDenys Vlasenko2018-12-18 15:49:42 +0100
commit3f940c9c707904df545c148065f720d33e805aed (patch)
treeaf6e53ef36b07137014b59c36eceed171f98ed4a /miscutils
parent55f3cab7e9f61c1e9fc342f2d245d6b055a08b84 (diff)
downloadbusybox-3f940c9c707904df545c148065f720d33e805aed.zip
busybox-3f940c9c707904df545c148065f720d33e805aed.tar.gz
bc: shrink bc_program_index()
function old new delta bc_program_index 66 47 -19 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-19) Total: -19 bytes text data bss dec hex filename 981418 485 7296 989199 f180f busybox_old 981399 485 7296 989180 f17fc busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/bc.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index eaa28a9..2da7c31 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -5256,11 +5256,18 @@ exec_err:
static size_t bc_program_index(char *code, size_t *bgn)
{
- char amt = code[(*bgn)++], i = 0;
- size_t res = 0;
+ unsigned char *bytes = (void*)(code + *bgn);
+ unsigned amt;
+ unsigned i;
+ size_t res;
+
+ amt = *bytes++;
+ *bgn += amt + 1;
- for (; i < amt; ++i, ++(*bgn))
- res |= (((size_t)((int) code[*bgn]) & UCHAR_MAX) << (i * CHAR_BIT));
+ amt *= 8;
+ res = 0;
+ for (i = 0; i < amt; i += 8)
+ res |= (size_t)(*bytes++) << i;
return res;
}