NAME

memchr, memrchr — locate byte in byte string

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <string.h>

void *
memchr(const void *b, int c, size_t len);

void *
memrchr(const void *b, int c, size_t len);

DESCRIPTION

The memchr() function locates the first occurrence of c (converted to an unsigned char) in string b. The memrchr() function locates the last occurrence of c (converted to an unsigned char) in string b.

RETURN VALUES

The memchr() and memrchr() functions return a pointer to the byte located, or NULL if no such byte exists within len bytes.

SEE ALSO

index(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)

STANDARDS

The memchr() function conforms to ANSI X3.159-1989 (“ANSI C89”).