NAME
bcmp, bcopy, bzero, memccpy, memchr, memcmp, memcpy, memmove, memset – byte string operations
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
int
bcmp(const void *b1, const void *b2, size_t len);
void
bcopy(const void *src, void *dst, size_t len);
void
bzero(void *b, size_t len);
QVoid *
memchr(QVoid *b, int c, size_t len);
int
memcmp(const void *b1, const void *b2, size_t len);
void *
memccpy(void * restrict dst, const void * restrict src, int c, size_t len);
void *
memcpy(void *dst, const void *src, size_t len);
void *
memmove(void *dst, const void *src, size_t len);
void *
memset(void *b, int c, size_t len);
DESCRIPTION
These functions operate on variable length strings of bytes. They do not check for terminating null bytes as the routines listed in string(3) do.
See the specific manual pages for more information.
SEE ALSO
bcmp(3), bcopy(3), bzero(3), memccpy(3), memchr(3), memcmp(3), memcpy(3), memmove(3), memset(3)
STANDARDS
The functions memcmp(), memcpy(), memmove(), and memset() conform to ISO/IEC 9899:1990 (“ISO C90”).
The memchr() function conforms to ISO/IEC 9899:2024 (“ISO C23”), where it is specified as a qualifier-preserving function.
HISTORY
The functions bzero() and memccpy() appeared in 4.3BSD; the functions bcmp(), bcopy(), appeared in 4.2BSD.