1 /* mpfr_min -- min and max of x, y
3 Copyright 2001, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4 Contributed by the Arenaire and Caramel projects, INRIA.
6 This file is part of the GNU MPFR Library.
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
24 #include "mpfr-impl.h"
26 /* The computation of z=min(x,y)
33 mpfr_min (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mpfr_rnd_t rnd_mode)
35 if (MPFR_ARE_SINGULAR(x,y))
37 if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) )
42 else if (MPFR_IS_NAN(x))
43 return mpfr_set(z, y, rnd_mode);
44 else if (MPFR_IS_NAN(y))
45 return mpfr_set(z, x, rnd_mode);
46 else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y))
49 return mpfr_set(z, x, rnd_mode);
51 return mpfr_set(z, y, rnd_mode);
54 if (mpfr_cmp(x,y) <= 0)
55 return mpfr_set(z, x, rnd_mode);
57 return mpfr_set(z, y, rnd_mode);
60 /* The computation of z=max(x,y)
67 mpfr_max (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mpfr_rnd_t rnd_mode)
69 if (MPFR_ARE_SINGULAR(x,y))
71 if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) )
76 else if (MPFR_IS_NAN(x))
77 return mpfr_set(z, y, rnd_mode);
78 else if (MPFR_IS_NAN(y))
79 return mpfr_set(z, x, rnd_mode);
80 else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y))
83 return mpfr_set(z, y, rnd_mode);
85 return mpfr_set(z, x, rnd_mode);
88 if (mpfr_cmp(x,y) <= 0)
89 return mpfr_set(z, y, rnd_mode);
91 return mpfr_set(z, x, rnd_mode);