1 /* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor. 2 3 Copyright 1999-2004, 2006-2018 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 "mpfr-test.h" 24 25 #define SIZEX 100 26 27 int 28 main (void) 29 { 30 int j, k; 31 mpfr_t x, y, z, t, y2, z2, t2; 32 33 tests_start_mpfr (); 34 35 mpfr_inits2 (SIZEX, x, y, z, t, y2, z2, t2, (mpfr_ptr) 0); 36 37 mpfr_set_str1 (x, "0.5"); 38 mpfr_ceil(y, x); 39 if (mpfr_cmp_ui (y, 1)) 40 { 41 printf ("Error in mpfr_ceil for x=0.5: expected 1.0, got "); 42 mpfr_dump (y); 43 exit (1); 44 } 45 46 mpfr_set_ui (x, 0, MPFR_RNDN); 47 mpfr_ceil(y, x); 48 if (mpfr_cmp_ui(y,0)) 49 { 50 printf ("Error in mpfr_ceil for x=0.0: expected 0.0, got "); 51 mpfr_dump (y); 52 exit (1); 53 } 54 55 mpfr_set_ui (x, 1, MPFR_RNDN); 56 mpfr_ceil(y, x); 57 if (mpfr_cmp_ui(y,1)) 58 { 59 printf ("Error in mpfr_ceil for x=1.0: expected 1.0, got "); 60 mpfr_dump (y); 61 exit (1); 62 } 63 64 for (j=0;j<1000;j++) 65 { 66 mpfr_urandomb (x, RANDS); 67 MPFR_EXP (x) = 2; 68 69 for (k = 2; k <= SIZEX; k++) 70 { 71 mpfr_set_prec(y, k); 72 mpfr_set_prec(y2, k); 73 mpfr_set_prec(z, k); 74 mpfr_set_prec(z2, k); 75 mpfr_set_prec(t, k); 76 mpfr_set_prec(t2, k); 77 78 mpfr_floor(y, x); 79 mpfr_set(y2, x, MPFR_RNDD); 80 81 mpfr_trunc(z, x); 82 mpfr_set(z2, x, MPFR_RNDZ); 83 84 mpfr_ceil(t, x); 85 mpfr_set(t2, x, MPFR_RNDU); 86 87 if (!mpfr_eq(y, y2, k)) 88 { 89 printf ("Error in floor, x = "); mpfr_dump (x); 90 printf ("floor(x) = "); mpfr_dump (y); 91 printf ("round(x, RNDD) = "); mpfr_dump (y2); 92 exit(1); 93 } 94 95 if (!mpfr_eq(z, z2, k)) 96 { 97 printf ("Error in trunc, x = "); mpfr_dump (x); 98 printf ("trunc(x) = "); mpfr_dump (z); 99 printf ("round(x, RNDZ) = "); mpfr_dump (z2); 100 exit(1); 101 } 102 103 if (!mpfr_eq(y, y2, k)) 104 { 105 printf ("Error in ceil, x = "); mpfr_dump (x); 106 printf ("ceil(x) = "); mpfr_dump (t); 107 printf ("round(x, RNDU) = "); mpfr_dump (t2); 108 exit(1); 109 } 110 MPFR_EXP(x)++; 111 } 112 } 113 114 mpfr_clears (x, y, z, t, y2, z2, t2, (mpfr_ptr) 0); 115 116 tests_end_mpfr (); 117 return 0; 118 } 119