1 /* Test file for mpfr_min & mpfr_max. 2 3 Copyright 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. 4 Contributed by the AriC and Caramel 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 http://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 <stdio.h> 24 #include <stdlib.h> 25 26 #include "mpfr-test.h" 27 28 int 29 main (void) 30 { 31 mpfr_t x, y, z; 32 33 tests_start_mpfr (); 34 35 mpfr_init (x); 36 mpfr_init (y); 37 mpfr_init (z); 38 39 /* case x=NaN && y=NAN */ 40 mpfr_set_nan (x); 41 mpfr_set_nan (y); 42 mpfr_min (z, x, y, MPFR_RNDN); 43 if (!mpfr_nan_p (z)) 44 { 45 printf ("Error in mpfr_min (NaN, NaN)\n"); 46 exit (1); 47 } 48 mpfr_max (z, x, y, MPFR_RNDN); 49 if (!mpfr_nan_p (z)) 50 { 51 printf ("Error in mpfr_max (NaN, NaN)\n"); 52 exit (1); 53 } 54 /* case x=NaN */ 55 mpfr_set_nan (x); 56 mpfr_set_ui (y, 0, MPFR_RNDN); 57 mpfr_min (z, x, y, MPFR_RNDN); 58 if (mpfr_cmp_ui (z, 0)) 59 { 60 printf ("Error in mpfr_min (NaN, 0)\n"); 61 exit (1); 62 } 63 mpfr_min (z, y, x, MPFR_RNDN); 64 if (mpfr_cmp_ui (z, 0)) 65 { 66 printf ("Error in mpfr_min (0, NaN)\n"); 67 exit (1); 68 } 69 mpfr_max (z, x, y, MPFR_RNDN); 70 if (mpfr_cmp_ui (z, 0)) 71 { 72 printf ("Error in mpfr_max (NaN, 0)\n"); 73 exit (1); 74 } 75 mpfr_max (z, y, x, MPFR_RNDN); 76 if (mpfr_cmp_ui (z, 0)) 77 { 78 printf ("Error in mpfr_max (0, NaN)\n"); 79 exit (1); 80 } 81 /* Case x=0+ and x=0- */ 82 mpfr_set_ui (x, 0, MPFR_RNDN); 83 mpfr_set_ui (y, 0, MPFR_RNDN); MPFR_SET_NEG(y); 84 mpfr_max (z, x, y, MPFR_RNDN); 85 if (!MPFR_IS_ZERO(z) || MPFR_IS_NEG(z)) 86 { 87 printf ("Error in mpfr_max (0+, 0-)\n"); 88 exit (1); 89 } 90 mpfr_min (z, x, y, MPFR_RNDN); 91 if (!MPFR_IS_ZERO(z) || MPFR_IS_POS(z)) 92 { 93 printf ("Error in mpfr_min (0+, 0-)\n"); 94 exit (1); 95 } 96 /* Case x=0- and y=0+ */ 97 mpfr_set_ui (x, 0, MPFR_RNDN); MPFR_SET_NEG(x); 98 mpfr_set_ui (y, 0, MPFR_RNDN); 99 mpfr_max (z, x, y, MPFR_RNDN); 100 if (!MPFR_IS_ZERO(z) || MPFR_IS_NEG(z)) 101 { 102 printf ("Error in mpfr_max (0+, 0-)\n"); 103 exit (1); 104 } 105 mpfr_min (z, x, y, MPFR_RNDN); 106 if (!MPFR_IS_ZERO(z) || MPFR_IS_POS(z)) 107 { 108 printf ("Error in mpfr_min (0+, 0-)\n"); 109 exit (1); 110 } 111 112 /* case x=+Inf */ 113 mpfr_set_inf (x, 1); 114 mpfr_set_si (y, -12, MPFR_RNDN); 115 mpfr_min (z, x, y, MPFR_RNDN); 116 if ( mpfr_cmp_si (z, -12) ) 117 { 118 printf ("Error in mpfr_min (+Inf, -12)\n"); 119 exit (1); 120 } 121 mpfr_max (z, x, y, MPFR_RNDN); 122 if ( !MPFR_IS_INF(z) || MPFR_IS_NEG(z) ) 123 { 124 printf ("Error in mpfr_max (+Inf, 12)\n"); 125 exit (1); 126 } 127 /* case x=-Inf */ 128 mpfr_set_inf (x, -1); 129 mpfr_set_ui (y, 12, MPFR_RNDN); 130 mpfr_max (z, x, y, MPFR_RNDN); 131 if ( mpfr_cmp_ui (z, 12) ) 132 { 133 printf ("Error in mpfr_max (-Inf, 12)\n"); 134 exit (1); 135 } 136 mpfr_min (z, x, y, MPFR_RNDN); 137 if ( !MPFR_IS_INF(z) || MPFR_IS_POS(z) ) 138 { 139 printf ("Error in mpfr_min (-Inf, 12)\n"); 140 exit (1); 141 } 142 143 /* case x=17 and y=42 */ 144 mpfr_set_ui (x, 17, MPFR_RNDN); 145 mpfr_set_ui (y, 42, MPFR_RNDN); 146 mpfr_max (z, x, y, MPFR_RNDN); 147 if ( mpfr_cmp_ui (z, 42) ) 148 { 149 printf ("Error in mpfr_max (17, 42)\n"); 150 exit (1); 151 } 152 mpfr_max (z, y, x, MPFR_RNDN); 153 if ( mpfr_cmp_ui (z, 42) ) 154 { 155 printf ("Error in mpfr_max (42, 17)\n"); 156 exit (1); 157 } 158 mpfr_min (z, y, x, MPFR_RNDN); 159 if ( mpfr_cmp_ui (z, 17) ) 160 { 161 printf ("Error in mpfr_min (42, 17)\n"); 162 exit (1); 163 } 164 165 mpfr_clear (x); 166 mpfr_clear (y); 167 mpfr_clear (z); 168 169 tests_end_mpfr (); 170 return 0; 171 } 172