mempcpy, wmempcpy: zkopírujte oblast paměti

Originální popis anglicky: mempcpy, wmempcpy - copy memory area

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#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);

POPIS / INSTRUKCE

The mempcpy() function is nearly identical to the memcpy() 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.

NÁVRATOVÁ HODNOTA

dest + n .

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;
}

CONFIRMING

This function is a GNU extension.

SOUVISEJÍCÍ

memccpy(3), memcpy(3), memmove(3), wmemcpy(3)