MEMCHR(3)              FreeBSD Library Functions Manual              MEMCHR(3)

NAME

     memchr - locate byte in memory object

LIBRARY

     Standard C Library (libc, -lc)

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 object b, limited to at most len characters.

     The memrchr() function behaves like memchr(), except that it locates the
     last occurrence of c in object b, limited to the first len characters.

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

     memmem(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3),
     strspn(3), strstr(3), strtok(3), wmemchr(3)

STANDARDS

     The memchr() function conforms to ISO/IEC 9899:1990 ("ISO C90").

     The memrchr() function is a GNU extension and conforms to no standard.

HISTORY

     The memrchr() function first appeared in GNU libc 2.1.91, this
     implementation first appeared in FreeBSD 6.4, coming from OpenBSD 4.3.

FreeBSD 15.1-STABLE-HBSD         April 9, 2008                       MEMCHR(3)