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