memcpy.gml

开放源码的编译器open watcom 1.6.0版的源代码

.func memcpy _fmemcpy wmemcpy _umemcpy
#include <string.h>
void *memcpy( void *dst,
              const void *src,
              size_t length );
.ixfunc2 '&Copy' &func
.if &farfnc eq 1 .do begin
void __far *_fmemcpy( void __far *dst,
                      const void __far *src,
                      size_t length );
.ixfunc2 '&Copy' &ffunc
.do end
.if &'length(&wfunc.) ne 0 .do begin
#include <wchar.h>
wchar_t *wmemcpy( wchar_t *dst,
                  const wchar_t *src,
                  size_t length );
.ixfunc2 '&Copy' &wfunc
.do end
:cmt. .if &'length(&ufunc.) ne 0 .do begin
:cmt. void *_umemcpy( void *dst,
:cmt.                 const void *src,
:cmt.                 size_t length );
:cmt. .ixfunc2 '&Copy' &ufunc
:cmt. .do end
.funcend
.*
.safealt
.*
.desc begin
The &func function copies
.arg length
characters from the buffer pointed to by
.arg src
into the buffer pointed to by
.arg dst.
Copying of overlapping objects is not guaranteed to work properly.
See the
.kw memmove
function if you wish to copy objects that overlap.
.im farfunc
.if &'length(&wfunc.) ne 0 .do begin
.np
The &wfunc wide-character function is identical to &func except that it
operates on characters of
.kw wchar_t
type.
The argument
.arg length
is interpreted to mean the number of wide characters.
.do end
:cmt. .if &'length(&ufunc.) ne 0 .do begin
:cmt. .np
:cmt. The &ufunc Unicode function is identical to &func except that it
:cmt. operates on 16-bit Unicode character strings.
:cmt. The argument
:cmt. .arg length
:cmt. is interpreted to mean the number of Unicode characters.
:cmt. .do end
.desc end
.*
.return begin
The original value of
.arg dst
is returned.
.return end
.*
.see begin
.seelist &function. memchr memcmp memcpy memicmp memmove memset memcpy_s memmove_s
.see end
.*
.exmp begin
#include <stdio.h>
#include <string.h>

void main( void )
{
    auto char buffer[80];
.exmp break
    memcpy( buffer, "Hello", 5 );
    buffer[5] = '\0';
    printf( "%s\n", buffer );
}
.exmp end
.*
.class ANSI
.system