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MEMCHR(3) | Linux Programmer's Manual | MEMCHR(3) |
NAME¶
memchr, memrchr, rawmemchr - scan memory for a characterSYNOPSIS¶
#include <string.h> void *memchr(const void *s, int c, size_t n); void *memrchr(const void *s, int c, size_t n); void *rawmemchr(const void *s, int c);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTION¶
The memchr() function scans the initial n bytes of the memory area pointed to by s for the first instance of c. Both c and the bytes of the memory area pointed to by s are interpreted as unsigned char. The memrchr() function is like the memchr() function, except that it searches backward from the end of the n bytes pointed to by s instead of forward from the beginning.char *p = rawmemchr(s, '\0');
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.VERSIONS¶
rawmemchr() first appeared in glibc in version 2.1.CONFORMING TO¶
The memchr() function conforms to SVr4, 4.3BSD, C89, C99, POSIX.1-2001.SEE ALSO¶
ffs(3), 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 3.44 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/.2012-04-23 |