1/* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor. 2 3Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 4Contributed by the Arenaire and Cacao projects, INRIA. 5 6This file is part of the GNU MPFR Library. 7 8The GNU MPFR Library is free software; you can redistribute it and/or modify 9it under the terms of the GNU Lesser General Public License as published by 10the Free Software Foundation; either version 3 of the License, or (at your 11option) any later version. 12 13The GNU MPFR Library is distributed in the hope that it will be useful, but 14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16License for more details. 17 18You should have received a copy of the GNU Lesser General Public License 19along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 2151 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 SIZEX 100 29 30int 31main (void) 32{ 33 int j, k; 34 mpfr_t x, y, z, t, y2, z2, t2; 35 36 tests_start_mpfr (); 37 38 mpfr_inits2 (SIZEX, x, y, z, t, y2, z2, t2, (mpfr_ptr) 0); 39 40 mpfr_set_str1 (x, "0.5"); 41 mpfr_ceil(y, x); 42 if (mpfr_cmp_ui (y, 1)) 43 { 44 printf ("Error in mpfr_ceil for x=0.5: expected 1.0, got "); 45 mpfr_print_binary(y); 46 putchar('\n'); 47 exit (1); 48 } 49 50 mpfr_set_ui (x, 0, MPFR_RNDN); 51 mpfr_ceil(y, x); 52 if (mpfr_cmp_ui(y,0)) 53 { 54 printf ("Error in mpfr_ceil for x=0.0: expected 0.0, got "); 55 mpfr_print_binary(y); 56 putchar('\n'); 57 exit (1); 58 } 59 60 mpfr_set_ui (x, 1, MPFR_RNDN); 61 mpfr_ceil(y, x); 62 if (mpfr_cmp_ui(y,1)) 63 { 64 printf ("Error in mpfr_ceil for x=1.0: expected 1.0, got "); 65 mpfr_print_binary(y); 66 putchar('\n'); 67 exit (1); 68 } 69 70 for (j=0;j<1000;j++) 71 { 72 mpfr_urandomb (x, RANDS); 73 MPFR_EXP (x) = 2; 74 75 for (k = 2; k <= SIZEX; k++) 76 { 77 mpfr_set_prec(y, k); 78 mpfr_set_prec(y2, k); 79 mpfr_set_prec(z, k); 80 mpfr_set_prec(z2, k); 81 mpfr_set_prec(t, k); 82 mpfr_set_prec(t2, k); 83 84 mpfr_floor(y, x); 85 mpfr_set(y2, x, MPFR_RNDD); 86 87 mpfr_trunc(z, x); 88 mpfr_set(z2, x, MPFR_RNDZ); 89 90 mpfr_ceil(t, x); 91 mpfr_set(t2, x, MPFR_RNDU); 92 93 if (!mpfr_eq(y, y2, k)) 94 { 95 printf("Error in floor, x = "); mpfr_print_binary(x); 96 printf("\n"); 97 printf("floor(x) = "); mpfr_print_binary(y); 98 printf("\n"); 99 printf("round(x, RNDD) = "); mpfr_print_binary(y2); 100 printf("\n"); 101 exit(1); 102 } 103 104 if (!mpfr_eq(z, z2, k)) 105 { 106 printf("Error in trunc, x = "); mpfr_print_binary(x); 107 printf("\n"); 108 printf("trunc(x) = "); mpfr_print_binary(z); 109 printf("\n"); 110 printf("round(x, RNDZ) = "); mpfr_print_binary(z2); 111 printf("\n"); 112 exit(1); 113 } 114 115 if (!mpfr_eq(y, y2, k)) 116 { 117 printf("Error in ceil, x = "); mpfr_print_binary(x); 118 printf("\n"); 119 printf("ceil(x) = "); mpfr_print_binary(t); 120 printf("\n"); 121 printf("round(x, RNDU) = "); mpfr_print_binary(t2); 122 printf("\n"); 123 exit(1); 124 } 125 MPFR_EXP(x)++; 126 } 127 } 128 129 mpfr_clears (x, y, z, t, y2, z2, t2, (mpfr_ptr) 0); 130 131 tests_end_mpfr (); 132 return 0; 133} 134