1MEMCHR(3)                  Linux Programmer's Manual                 MEMCHR(3)
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NAME

6       memchr, memrchr - scan memory for a character
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SYNOPSIS

9       #include <string.h>
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11       void *memchr(const void *s, int c, size_t n);
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13       void *memrchr(const void *s, int c, size_t n);
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DESCRIPTION

16       The  memchr()  function  scans  the  first  n  bytes of the memory area
17       pointed to by s for the character c.  The first byte to match c (inter‐
18       preted as an unsigned character) stops the operation.
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20       The  memrchr()  function  is like the memchr() function, except that it
21       searches backwards from the end of the n bytes pointed to by s  instead
22       of forwards from the front.
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RETURN VALUE

25       The  memchr()  and memrchr() functions return a pointer to the matching
26       byte or NULL if the character does not occur in the given memory area.
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CONFORMING TO

29       The memchr() function conforms to SVr4, 4.3BSD, C89, C99, POSIX.1-2001.
30       The  memrchr()  function  is  a  GNU  extension,  available since glibc
31       2.1.91.
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SEE ALSO

34       index(3), rindex(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), str‐
35       spn(3), strstr(3), wmemchr(3)
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39                                  2003-11-01                         MEMCHR(3)
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