memcpy(3) [freebsd man page]

MEMCPY(3)						   BSD Library Functions Manual 						 MEMCPY(3)

NAME

     memcpy -- copy byte string

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <string.h>

     void *
     memcpy(void *dst, const void *src, size_t len);

DESCRIPTION

     The memcpy() function copies len bytes from string src to string dst.

RETURN VALUES

     The memcpy() function returns the original value of dst.

SEE ALSO

     bcopy(3), memccpy(3), memmove(3), strcpy(3), wmemcpy(3)

STANDARDS

     The memcpy() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BUGS

     In this implementation memcpy() is implemented using bcopy(3), and therefore the strings may overlap.  On other systems, copying overlapping
     strings may produce surprises.  Programs intended to be portable should use memmove(3) when src and dst may overlap.

BSD
								   June 4, 1993 							       BSD

BSTRING(3)						   BSD Library Functions Manual 						BSTRING(3)

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);

     void *
     memchr(const void *b, int c, size_t len);

     int
     memcmp(const void *b1, const void *b2, size_t len);

     void *
     memccpy(void *dst, const void *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 memchr(), memcmp(), memcpy(), memmove(), and memset() conform to ISO/IEC 9899:1990 (``ISO C90'').

HISTORY

     The functions bzero() and memccpy() appeared in 4.3BSD; the functions bcmp(), bcopy(), appeared in 4.2BSD.

BSD
								   June 4, 1993 							       BSD