| /* mpfr_min -- min and max of x, y |
| |
| Copyright 2001, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
| Contributed by the AriC and Caramel 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 3 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.LESSER. If not, see |
| http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., |
| 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| |
| #include "mpfr-impl.h" |
| |
| /* The computation of z=min(x,y) |
| |
| z=x if x <= y |
| z=y if x > y |
| */ |
| |
| int |
| mpfr_min (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mpfr_rnd_t rnd_mode) |
| { |
| if (MPFR_ARE_SINGULAR(x,y)) |
| { |
| if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) ) |
| { |
| MPFR_SET_NAN(z); |
| MPFR_RET_NAN; |
| } |
| else if (MPFR_IS_NAN(x)) |
| return mpfr_set(z, y, rnd_mode); |
| else if (MPFR_IS_NAN(y)) |
| return mpfr_set(z, x, rnd_mode); |
| else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y)) |
| { |
| if (MPFR_IS_NEG(x)) |
| return mpfr_set(z, x, rnd_mode); |
| else |
| return mpfr_set(z, y, rnd_mode); |
| } |
| } |
| if (mpfr_cmp(x,y) <= 0) |
| return mpfr_set(z, x, rnd_mode); |
| else |
| return mpfr_set(z, y, rnd_mode); |
| } |
| |
| /* The computation of z=max(x,y) |
| |
| z=x if x >= y |
| z=y if x < y |
| */ |
| |
| int |
| mpfr_max (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mpfr_rnd_t rnd_mode) |
| { |
| if (MPFR_ARE_SINGULAR(x,y)) |
| { |
| if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) ) |
| { |
| MPFR_SET_NAN(z); |
| MPFR_RET_NAN; |
| } |
| else if (MPFR_IS_NAN(x)) |
| return mpfr_set(z, y, rnd_mode); |
| else if (MPFR_IS_NAN(y)) |
| return mpfr_set(z, x, rnd_mode); |
| else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y)) |
| { |
| if (MPFR_IS_NEG(x)) |
| return mpfr_set(z, y, rnd_mode); |
| else |
| return mpfr_set(z, x, rnd_mode); |
| } |
| } |
| if (mpfr_cmp(x,y) <= 0) |
| return mpfr_set(z, y, rnd_mode); |
| else |
| return mpfr_set(z, x, rnd_mode); |
| } |