MEMCHR

NAME

memchr, memrchr - scan memory for a character

SYNOPSIS

#include <string.h>

void *memchr(const void *s, int c, size_t n);

void *memrchr(const void *s, int c, size_t n);

DESCRIPTION

The memchr() function scans the first fInfP bytes of the memory area pointed to by fIsfP for the character fIcfP. The first byte to match fIcfP (interpreted as an unsigned character) stops the operation.

The memrchr() function is like the memchr() function, except that it searches backwards from the end of the fInfP bytes pointed to by fIsfP instead of forwards from the front.

RETURN VALUE

The fBmemchr()fP and fBmemrchr()fP functions return a pointer to the matching byte or NULL if the character does not occur in the given memory area.

CONFORMING TO

The memchr() function conforms to SVID 3, BSD 4.3, ISO 9899, POSIX. The memrchr() function is a GNU extension, available since glibc 2.1.91.