MEMPCPY
Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
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NAME
mempcpy, wmempcpy - copy memory area
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *mempcpy(void *dest, const void *src, size_t n);
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <wchar.h>
wchar_t *wmempcpy(wchar_t *dest, const wchar_t *src, size_t n);
DESCRIPTION
The
mempcpy()
function is nearly identical to the
memcpy(3)
function.
It copies
n
bytes from the object beginning at
src
into the object pointed to by
dest.
But instead of returning the value of
dest
it returns a pointer to the byte following the last written byte.
This function is useful in situations where a number of objects
shall be copied to consecutive memory positions.
The
wmempcpy()
function is identical but takes
wchar_t
type arguments and copies
n
wide characters.
RETURN VALUE
dest
+
n.
VERSIONS
mempcpy()
first appeared in glibc in version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
mempcpy(),
wmempcpy()
| Thread safety | MT-Safe
|
CONFORMING TO
This function is a GNU extension.
EXAMPLE
void *
combine(void *o1, size_t s1, void *o2, size_t s2)
{
void *result = malloc(s1 + s2);
if (result != NULL)
mempcpy(mempcpy(result, o1, s1), o2, s2);
return result;
}
SEE ALSO
memccpy(3),
memcpy(3),
memmove(3),
wmemcpy(3)
COLOPHON
This page is part of release 4.13 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- VERSIONS
-
- ATTRIBUTES
-
- CONFORMING TO
-
- EXAMPLE
-
- SEE ALSO
-
- COLOPHON
-
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- Running on 
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