mempcpy(3) Library Functions Manual mempcpy(3)
NAME
mempcpy, wmempcpy - copy memory area
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *mempcpy(void dest[restrict .n], const void src[restrict .n],
size_t n);
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <wchar.h>
wchar_t *wmempcpy(wchar_t dest[restrict .n],
const wchar_t src[restrict .n],
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 re-
turns 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 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
┌────────────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────────────────────┼───────────────┼─────────┤
│mempcpy(), wmempcpy() │ Thread safety │ MT-Safe │
└────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
This function is a GNU extension.
EXAMPLES
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)
Linux man-pages 6.03 2022-12-15 mempcpy(3)
Generated by dwww version 1.15 on Sat Jun 22 12:27:20 CEST 2024.