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MEMCHR(3) 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 charac- ters. RETURN VALUES The memchr() and memrchr() functions return a pointer to the byte lo- cated, 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 imple- mentation first appeared in FreeBSD 6.4, coming from OpenBSD 4.3. FreeBSD 15.0 April 9, 2008 MEMCHR(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | STANDARDS | HISTORY
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