—
NAME
mempcpy, wmempcpy - copy memory area
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
bash
#define _GNU_SOURCE\n /* See feature_test_macros(7) */
\n#include <string.h>bash
void *mempcpy(void \ndest\n[restrict .\nn\n], const void \nsrc\n[restrict .\nn\n],\n
\n size_t \nn\n);bash
#define _GNU_SOURCE\n /* See feature_test_macros(7) */
\n#include <wchar.h>bash
wchar_t *wmempcpy(wchar_t \ndest\n[restrict .\nn\n],\n
\n const wchar_t \nsrc\n[restrict .\nn\n],\n
\n size_t \nn\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.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| mempcpy (), wmempcpy () | Thread safety | MT-Safe |
STANDARDS
GNU.
HISTORY
glibc 2.1.
EXAMPLES
bash
void *
combine(void *o1, size_t s1, void *o2, size_t s2)
{
\n
void *result = malloc(s1 + s2);
\n
if (result != NULL)
\n
mempcpy(mempcpy(result, o1, s1), o2, s2);
\n
return result;
}SEE ALSO
memccpy(3), memcpy(3), memmove(3), wmemcpy(3)