memchr

MEMCHR(3)                  Linux Programmer's Manual                 MEMCHR(3)



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 (inter-
       preted 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 SVID 3, BSD 4.3, ISO 9899, POSIX.
       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), str-
       spn(3), strstr(3)



GNU                               2002-02-20                         MEMCHR(3)