libphobos/libdruntime/rt/arraycat.d

   1 /**
   2  * Implementation of array copy support routines.
   3  *
   4  * Copyright: Copyright Digital Mars 2004 - 2016.
   5  * License:   Distributed under the
   6  *            $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0).
   7  * Authors:   Walter Bright, Sean Kelly
   8  * Source:    $(DRUNTIMESRC rt/_arraycat.d)
   9  */
  10
  11 module rt.arraycat;
  12
  13 private
  14 {
  15     import core.stdc.string;
  16     import core.internal.util.array;
  17     debug(PRINTF) import core.stdc.stdio;
  18 }
  19
  20 extern (C) @trusted nothrow:
  21
  22 void[] _d_arraycopy(size_t size, void[] from, void[] to)
  23 {
  24     debug(PRINTF) printf("f = %p,%d, t = %p,%d, size = %d\n",
  25                  from.ptr, from.length, to.ptr, to.length, size);
  26
  27     enforceRawArraysConformable("copy", size, from, to);
  28     memcpy(to.ptr, from.ptr, to.length * size);
  29     return to;
  30 }