summaryrefslogtreecommitdiff
path: root/mpf/swap.c
blob: 259bb37d1c9c99503c1f20b40a6c59be3ca9ff16 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
/* mpf_swap (U, V) -- Swap U and V.

Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.

This file is part of the GNU MP Library.

The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.

The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
License for more details.

You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */

#include "gmp.h"
#include "gmp-impl.h"

void
#if __STDC__
mpf_swap (mpf_ptr u, mpf_ptr v)
#else
mpf_swap (u, v)
     mpf_ptr u;
     mpf_ptr v;
#endif
{
  mp_ptr up, vp;
  mp_size_t usize, vsize;
  mp_size_t uprec, vprec;
  mp_exp_t  uexp, vexp;

  uprec = u->_mp_prec;
  vprec = v->_mp_prec;
  v->_mp_prec = uprec;
  u->_mp_prec = vprec;

  usize = u->_mp_size;
  vsize = v->_mp_size;
  v->_mp_size = usize;
  u->_mp_size = vsize;

  uexp = u->_mp_exp;
  vexp = v->_mp_exp;
  v->_mp_exp = uexp;
  u->_mp_exp = vexp;

  up = u->_mp_d;
  vp = v->_mp_d;
  v->_mp_d = up;
  u->_mp_d = vp;
}