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Command: memchr | Section: 3 | Source: OpenBSD | File: memchr.3
MEMCHR(3) FreeBSD Library Functions Manual MEMCHR(3)
NAME
memchr, memrchr - 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 ANSI X3.159-1989 ("ANSI C89").
The memrchr() function is an OpenBSD extension.
HISTORY
The memchr() function first appeared in AT&T System V UNIX and was
reimplemented for 4.3BSD.
FreeBSD 14.1-RELEASE-p8 December 11, 2024 FreeBSD 14.1-RELEASE-p8