newlib-cygwin/newlib/libc/string/strrchr.c

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2000-02-18 03:39:52 +08:00
/*
FUNCTION
<<strrchr>>---reverse search for character in string
INDEX
strrchr
ANSI_SYNOPSIS
#include <string.h>
char * strrchr(const char *<[string]>, int <[c]>);
TRAD_SYNOPSIS
#include <string.h>
char * strrchr(<[string]>, <[c]>);
char *<[string]>;
int *<[c]>;
DESCRIPTION
This function finds the last occurence of <[c]> (converted to
a char) in the string pointed to by <[string]> (including the
terminating null character).
RETURNS
Returns a pointer to the located character, or a null pointer
if <[c]> does not occur in <[string]>.
PORTABILITY
<<strrchr>> is ANSI C.
<<strrchr>> requires no supporting OS subroutines.
QUICKREF
strrchr ansi pure
*/
#include <string.h>
char *
_DEFUN (strrchr, (s, i),
_CONST char *s _AND
int i)
{
_CONST char *last = NULL;
char c = i;
while (*s)
{
if (*s == c)
{
last = s;
}
s++;
}
if (*s == c)
{
last = s;
}
return (char *) last;
}