fluencelabs/musl
1
0
Fork 0
mirror of https://github.com/fluencelabs/musl synced 2025-06-19 01:41:41 +00:00
Code Issues Projects Releases Wiki Activity

initial check-in, version 0.5.0

Browse Source
This commit is contained in:
Rich Felker
2011-02-12 00:22:29 -05:00
commit 0b44a0315b
1021 changed files with 45711 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/string/strcspn.c Normal file
View File

@ -0,0 +1,20 @@
#include <string.h>
#define BITOP(a,b,op) \
((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a))))
size_t strcspn(const char *_s, const char *_c)
{
const unsigned char *s = _s;
const unsigned char *c = _c;
const unsigned char *a = s;
size_t byteset[32/sizeof(size_t)];
if (!c[0]) return strlen(s);
if (!c[1]) return (s=strchr(s, *c)) ? s-a : strlen(a);
memset(byteset, 0, sizeof byteset);
for (; *c && BITOP(byteset, *c, |=); c++);
for (; *s && !BITOP(byteset, *s, &); s++);
return s-a;
}