mempcpy(3)                 Library Functions Manual                 mempcpy(3)

NAME
       mempcpy - memory return-offset-pointer copy

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <string.h>  // see memory.h(3head)

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

DESCRIPTION
       This function is similar to memcpy(3), but it returns a pointer to one
       past the last written byte.

       It is equivalent to

           memcpy(dest, src, n) + n

RETURN VALUE
       dest + n.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |mempcpy ()                                  | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       GNU.

HISTORY
       glibc 2.1.

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;
       }

SEE ALSO
       memory.h(3head), memccpy(3), memcpy(3), wmempcpy(3)

Linux man-pages 6.19              2026-08-10                        mempcpy(3)