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Manual Reference Pages  - mempcpy (3)

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mempcpy, wmempcpy - copy memory area

CONTENTS

Synopsis
Description

#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); 

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.

dest + n .

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;
}

This function is a GNU extension.

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

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