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      1 /* comparison predicates
      2 
      3 Copyright 2002-2004, 2006-2023 Free Software Foundation, Inc.
      4 Contributed by the AriC and Caramba projects, INRIA.
      5 
      6 This file is part of the GNU MPFR Library.
      7 
      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.
     12 
     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.
     17 
     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 https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
     21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
     22 
     23 #include "mpfr-impl.h"
     24 
     25 /* Note: these functions currently use mpfr_cmp; they could have their
     26    own code to be faster. */
     27 
     28 /*                          =     <     >     unordered
     29  * mpfr_greater_p           0     0     1     0
     30  * mpfr_greaterequal_p      1     0     1     0
     31  * mpfr_less_p              0     1     0     0
     32  * mpfr_lessequal_p         1     1     0     0
     33  * mpfr_lessgreater_p       0     1     1     0
     34  * mpfr_equal_p             1     0     0     0
     35  * mpfr_unordered_p         0     0     0     1
     36  */
     37 
     38 int
     39 mpfr_greater_p (mpfr_srcptr x, mpfr_srcptr y)
     40 {
     41   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) > 0);
     42 }
     43 
     44 int
     45 mpfr_greaterequal_p (mpfr_srcptr x, mpfr_srcptr y)
     46 {
     47   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) >= 0);
     48 }
     49 
     50 int
     51 mpfr_less_p (mpfr_srcptr x, mpfr_srcptr y)
     52 {
     53   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) < 0);
     54 }
     55 
     56 int
     57 mpfr_lessequal_p (mpfr_srcptr x, mpfr_srcptr y)
     58 {
     59   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) <= 0);
     60 }
     61 
     62 int
     63 mpfr_lessgreater_p (mpfr_srcptr x, mpfr_srcptr y)
     64 {
     65   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) != 0);
     66 }
     67 
     68 int
     69 mpfr_equal_p (mpfr_srcptr x, mpfr_srcptr y)
     70 {
     71   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y) ? 0 : (mpfr_cmp (x, y) == 0);
     72 }
     73 
     74 int
     75 mpfr_unordered_p (mpfr_srcptr x, mpfr_srcptr y)
     76 {
     77   return MPFR_IS_NAN(x) || MPFR_IS_NAN(y);
     78 }
     79