contrib/gmp/mpz/set.c

   1 /* mpz_set (dest_integer, src_integer) -- Assign DEST_INTEGER from SRC_INTEGER.
   2
   3 Copyright 1991, 1993, 1994, 1995, 2000 Free Software Foundation, Inc.
   4
   5 This file is part of the GNU MP Library.
   6
   7 The GNU MP Library is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU Lesser General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or (at your
  10 option) any later version.
  11
  12 The GNU MP Library is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15 License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public License
  18 along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
  19
  20 #include "gmp.h"
  21 #include "gmp-impl.h"
  22
  23
  24 #ifdef BERKELEY_MP
  25 #include "mp.h"
  26 #define FUNCTION   move
  27 #define ARGUMENTS  mpz_srcptr u, mpz_ptr w
  28
  29 #else
  30 #define FUNCTION   mpz_set
  31 #define ARGUMENTS  mpz_ptr w, mpz_srcptr u
  32
  33 #endif
  34
  35
  36 void
  37 FUNCTION (ARGUMENTS)
  38 {
  39   mp_ptr wp, up;
  40   mp_size_t usize, size;
  41
  42   usize = u->_mp_size;
  43   size = ABS (usize);
  44
  45   if (w->_mp_alloc < size)
  46     _mpz_realloc (w, size);
  47
  48   wp = w->_mp_d;
  49   up = u->_mp_d;
  50
  51   MPN_COPY (wp, up, size);
  52   w->_mp_size = usize;
  53 }