NAME


mempcpy, wmempcpy - copy memory area

SYNOPSIS


#define _GNU_SOURCE #include <string.h>

void *mempcpy(void *dest, const void *src, size_t n);

#define _GNU_SOURCE #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.

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), feature_test_macros(7)

COLOPHON


This page is part of release 3.23 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

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