mempcpy, wmempcpy - copy memory area
Contents
Attributes
For an explanation of the terms used in this section, see attributes(7).
┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
│ mempcpy(), wmempcpy() │ Thread safety │ MT-Safe │
└─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘
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.
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;
}
History
glibc 2.1.
Library
Standard C library (libc, -lc)
Name
mempcpy, wmempcpy - copy memory area
Return Value
dest + n.
See Also
memccpy(3), memcpy(3), memmove(3), wmemcpy(3) Linux man-pages 6.9.1 2024-05-02 mempcpy(3)
Standards
GNU.
Synopsis
#define_GNU_SOURCE /* See feature_test_macros(7) */ #include<string.h>void*mempcpy(voiddest[restrict.n],constvoidsrc[restrict.n],size_tn);#define_GNU_SOURCE /* See feature_test_macros(7) */ #include<wchar.h>wchar_t*wmempcpy(wchar_tdest[restrict.n],constwchar_tsrc[restrict.n],size_tn);
