MEMCPY(3) |
FreeBSD 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.
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.