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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | EXAMPLES | SEE ALSO | COLOPHON |
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mempcpy(3) Library Functions Manual mempcpy(3)
mempcpy, wmempcpy - copy memory area
Standard C library (libc, -lc)
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *mempcpy(size_t n;
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(size_t n;
wchar_t dest[restrict n], const wchar_t src[restrict n],
size_t n);
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.
dest + n.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│ mempcpy(), wmempcpy() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
GNU.
glibc 2.1.
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;
}
memccpy(3), memcpy(3), memmove(3), wmemcpy(3)
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Linux man-pages 6.15 2025-06-28 mempcpy(3)
Pages that refer to this page: memcpy(3), wmemcpy(3), string_copying(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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