1 /* Test file for mpfr_dim. 2 3 Copyright 2004-2016 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 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 #define TEST_FUNCTION mpfr_dim 29 #define TWO_ARGS 30 #define TEST_RANDOM_EMIN -20 31 #define TEST_RANDOM_EMAX 20 32 #define TGENERIC_NOWARNING 1 33 #include "tgeneric.c" 34 35 int 36 main (void) 37 { 38 mpfr_t x, y, z; 39 40 tests_start_mpfr (); 41 42 mpfr_init (x); 43 mpfr_init (y); 44 mpfr_init (z); 45 46 /* case x=NaN */ 47 mpfr_set_nan (x); 48 mpfr_set_ui (y, 0, MPFR_RNDN); 49 mpfr_dim (z, x, y, MPFR_RNDN); 50 if (!mpfr_nan_p (z)) 51 { 52 printf ("Error in mpfr_dim (NaN, 0)\n"); 53 exit (1); 54 } 55 56 /* case x=+Inf */ 57 mpfr_set_inf (x, 1); 58 mpfr_set_ui (y, 0, MPFR_RNDN); 59 mpfr_dim (z, x, y, MPFR_RNDN); 60 if (!mpfr_inf_p (z) || mpfr_sgn (z) < 0) 61 { 62 printf ("Error in mpfr_dim (+Inf, 0)\n"); 63 exit (1); 64 } 65 66 /* case x=-Inf */ 67 mpfr_set_inf (x, -1); 68 mpfr_set_ui (y, 0, MPFR_RNDN); 69 mpfr_dim (z, x, y, MPFR_RNDN); 70 if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0) 71 { 72 printf ("Error in mpfr_dim (-Inf, 0)\n"); 73 exit (1); 74 } 75 76 /* case x=y=+Inf */ 77 mpfr_set_inf (x, 1); 78 mpfr_set_inf (y, 1); 79 mpfr_dim (z, x, y, MPFR_RNDN); 80 if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0) 81 { 82 printf ("Error in mpfr_dim (+Inf, +Inf)\n"); 83 exit (1); 84 } 85 86 /* case x > y */ 87 mpfr_set_ui (x, 2, MPFR_RNDN); 88 mpfr_set_ui (y, 1, MPFR_RNDN); 89 mpfr_dim (z, x, y, MPFR_RNDN); 90 if (mpfr_cmp_ui (z, 1)) 91 { 92 printf ("Error in mpfr_dim (2, 1)\n"); 93 exit (1); 94 } 95 96 /* case x < y */ 97 mpfr_set_ui (x, 1, MPFR_RNDN); 98 mpfr_set_ui (y, 2, MPFR_RNDN); 99 mpfr_dim (z, x, y, MPFR_RNDN); 100 if (mpfr_cmp_ui (z, 0)) 101 { 102 printf ("Error in mpfr_dim (1, 2)\n"); 103 exit (1); 104 } 105 106 mpfr_clear (x); 107 mpfr_clear (y); 108 mpfr_clear (z); 109 110 test_generic (2, 220, 42); 111 112 tests_end_mpfr (); 113 return 0; 114 } 115