1 /* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor. 2 3 Copyright 1999, 2000, 2001, 2002, 2003, 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 #define SIZEX 100 29 30 int 31 main (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