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 n bytes of the memory area pointed to by s for the character c. The first byte to match c (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 n bytes pointed to by s instead of forwards from the front.

RETURN VALUE

The memchr() and memrchr() 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 SVr4, 4.3BSD, C89, C99, POSIX.1-2001. The memrchr() function is a GNU extension, available since glibc 2.1.91.

SEE ALSO

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

COLOPHON

This page is part of release 2.79 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


  Copyright 1993 David Metcalfe (davidprism.demon.co.uk)

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Modified Mon Apr 12 12:49:57 1993, David Metcalfe
Modified Sat Jul 24 18:56:22 1993, Rik Faith (faithcs.unc.edu)
Modified Wed Feb 20 21:09:36 2002, Ian Redfern (redfernilogica.com)