blob: 413f999ff934adc9aa651663681cc5435b67326f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/*
SYNOPSIS
#include <string.h>
char *strchr(char const *s, int c);
char *strrchr(char const *s, int c);
DESCRIPTION
The strchr() function returns a pointer to the first occurrence of the
character c in the string s.
The strrchr() function returns a pointer to the last occurrence of the
character c in the string s.
Here "character" means "byte" - these functions do not work with wide
or multi-byte characters.
RETURN VALUE
The strchr() and strrchr() functions return a pointer to the matched
character or NULL if the character is not found.
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
*/
char*
strchr( char const *s, int c)
{
do {
if ((unsigned)*s == (unsigned)c)
return s;
} while (*(++s) != NUL);
return NULL;
}
char*
strrchr( char const *s, int c)
{
char const *e = s + strlen(s);
for (;;) {
if (--e < s)
break;
if ((unsigned)*e == (unsigned)c)
return e;
}
return NULL;
}
/*
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of compat/strsignal.c */
|
