Last change
on this file since 351 was 337, checked in by coas-nagasima, 6 years ago |
ASP3版ECNLを追加
|
-
Property svn:eol-style
set to
native
-
Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
|
File size:
635 bytes
|
Line | |
---|
1 | #include <string.h>
|
---|
2 | #include <stdint.h>
|
---|
3 | #include <limits.h>
|
---|
4 | #include "libc.h"
|
---|
5 |
|
---|
6 | #define ALIGN (sizeof(size_t))
|
---|
7 | #define ONES ((size_t)-1/UCHAR_MAX)
|
---|
8 | #define HIGHS (ONES * (UCHAR_MAX/2+1))
|
---|
9 | #define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
|
---|
10 |
|
---|
11 | char *__strchrnul(const char *s, int c)
|
---|
12 | {
|
---|
13 | size_t *w, k;
|
---|
14 |
|
---|
15 | c = (unsigned char)c;
|
---|
16 | if (!c) return (char *)s + strlen(s);
|
---|
17 |
|
---|
18 | for (; (uintptr_t)s % ALIGN; s++)
|
---|
19 | if (!*s || *(unsigned char *)s == c) return (char *)s;
|
---|
20 | k = ONES * c;
|
---|
21 | for (w = (void *)s; !HASZERO(*w) && !HASZERO(*w^k); w++);
|
---|
22 | for (s = (void *)w; *s && *(unsigned char *)s != c; s++);
|
---|
23 | return (char *)s;
|
---|
24 | }
|
---|
25 |
|
---|
26 | weak_alias(__strchrnul, strchrnul);
|
---|
Note:
See
TracBrowser
for help on using the repository browser.