| /* mpfr_set_sj -- set a MPFR number from a huge machine signed integer |
| |
| Copyright 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| Contributed by the Arenaire and Cacao projects, INRIA. |
| |
| This file is part of the GNU MPFR Library. |
| |
| The GNU MPFR Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or (at your |
| option) any later version. |
| |
| The GNU MPFR 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 Lesser General Public |
| License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" /* for a build within gmp */ |
| #endif |
| |
| /* The ISO C99 standard specifies that in C++ implementations the |
| INTMAX_MAX, ... macros should only be defined if explicitly requested. */ |
| #if defined __cplusplus |
| # define __STDC_LIMIT_MACROS |
| # define __STDC_CONSTANT_MACROS |
| #endif |
| |
| #if HAVE_INTTYPES_H |
| # include <inttypes.h> /* for intmax_t */ |
| #else |
| # if HAVE_STDINT_H |
| # include <stdint.h> |
| # endif |
| #endif |
| |
| #include "mpfr-impl.h" |
| |
| #ifdef _MPFR_H_HAVE_INTMAX_T |
| |
| int |
| mpfr_set_sj (mpfr_t x, intmax_t j, mp_rnd_t rnd) |
| { |
| return mpfr_set_sj_2exp (x, j, 0, rnd); |
| } |
| |
| int |
| mpfr_set_sj_2exp (mpfr_t x, intmax_t j, intmax_t e, mp_rnd_t rnd) |
| { |
| if (j>=0) |
| return mpfr_set_uj_2exp (x, j, e, rnd); |
| else |
| { |
| int inex; |
| inex = mpfr_set_uj_2exp (x, - (uintmax_t) j, e, MPFR_INVERT_RND (rnd)); |
| MPFR_CHANGE_SIGN (x); |
| return -inex; |
| } |
| } |
| |
| #endif |