MEMCHR(3)

NAME
memchr - locate byte in byte string

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 behaves like memchr(), except that it locates the last occurrence of c 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
strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3), wmemchr(3)

STANDARDS
The memchr() function conforms to ansiC.

The memrchr() function is an OpenBSD extension.

HISTORY
The memchr() function first appeared in AT&T UNIX and was reimplemented for 4.3BSD Tahoe.