1/* mpfr_set_sj -- set a MPFR number from a huge machine signed integer
2
3Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4Contributed by the AriC and Caramel projects, INRIA.
5
6This file is part of the GNU MPFR Library.
7
8The GNU MPFR Library is free software; you can redistribute it and/or modify
9it under the terms of the GNU Lesser General Public License as published by
10the Free Software Foundation; either version 3 of the License, or (at your
11option) any later version.
12
13The GNU MPFR Library is distributed in the hope that it will be useful, but
14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
16License for more details.
17
18You should have received a copy of the GNU Lesser General Public License
19along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23#ifdef HAVE_CONFIG_H
24# include "config.h"       /* for a build within gmp */
25#endif
26
27#include "mpfr-intmax.h"
28#include "mpfr-impl.h"
29
30#ifdef _MPFR_H_HAVE_INTMAX_T
31
32int
33mpfr_set_sj (mpfr_t x, intmax_t j, mpfr_rnd_t rnd)
34{
35  return mpfr_set_sj_2exp (x, j, 0, rnd);
36}
37
38int
39mpfr_set_sj_2exp (mpfr_t x, intmax_t j, intmax_t e, mpfr_rnd_t rnd)
40{
41  if (j>=0)
42    return mpfr_set_uj_2exp (x, j, e, rnd);
43  else
44    {
45      int inex;
46      inex = mpfr_set_uj_2exp (x, - (uintmax_t) j, e, MPFR_INVERT_RND (rnd));
47      MPFR_CHANGE_SIGN (x);
48      return -inex;
49    }
50}
51
52#endif
53