1/* Test file for mpfr_check. 2 3Copyright 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. 4Contributed by the AriC and Caramel 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 <stdlib.h> 24#include <stdio.h> 25 26#include "mpfr-test.h" 27 28#define ERROR(s) \ 29 (printf ("mpfr_check failed " s " Prec=%lu\n", (unsigned long) pr), \ 30 exit(1)) 31 32int 33main (void) 34{ 35 mpfr_t a; 36 mp_limb_t *p, tmp; 37 mp_size_t s; 38 mpfr_prec_t pr; 39 int max; 40 41 tests_start_mpfr (); 42 for(pr = MPFR_PREC_MIN ; pr < 500 ; pr++) 43 { 44 mpfr_init2 (a, pr); 45 if (!mpfr_check(a)) ERROR("for init"); 46 /* Check special cases */ 47 MPFR_SET_NAN(a); 48 if (!mpfr_check(a)) ERROR("for nan"); 49 MPFR_SET_POS(a); 50 MPFR_SET_INF(a); 51 if (!mpfr_check(a)) ERROR("for inf"); 52 MPFR_SET_ZERO(a); 53 if (!mpfr_check(a)) ERROR("for zero"); 54 /* Check var */ 55 mpfr_set_ui(a, 2, MPFR_RNDN); 56 if (!mpfr_check(a)) ERROR("for set_ui"); 57 mpfr_clear_overflow(); 58 max = 1000; /* Allows max 2^1000 bits for the exponent */ 59 while ((!mpfr_overflow_p()) && (max>0)) 60 { 61 mpfr_mul(a, a, a, MPFR_RNDN); 62 if (!mpfr_check(a)) ERROR("for mul"); 63 max--; 64 } 65 if (max==0) ERROR("can't reach overflow"); 66 mpfr_set_ui(a, 2137, MPFR_RNDN); 67 /* Corrupt a and check for it */ 68 MPFR_SIGN(a) = 2; 69 if (mpfr_check(a)) ERROR("sgn"); 70 MPFR_SET_POS(a); 71 /* Check prec */ 72 MPFR_PREC(a) = 1; 73 if (mpfr_check(a)) ERROR("precmin"); 74#if MPFR_VERSION_MAJOR < 3 75 /* Disable the test with MPFR >= 3 since mpfr_prec_t is now signed. 76 The "if" below is sufficient, but the MPFR_PREC_MAX+1 generates 77 a warning with GCC 4.4.4 even though the test is always false. */ 78 if ((mpfr_prec_t) 0 - 1 > 0) 79 { 80 MPFR_PREC(a) = MPFR_PREC_MAX+1; 81 if (mpfr_check(a)) ERROR("precmax"); 82 } 83#endif 84 MPFR_PREC(a) = pr; 85 if (!mpfr_check(a)) ERROR("prec"); 86 /* Check exponent */ 87 MPFR_EXP(a) = MPFR_EXP_INVALID; 88 if (mpfr_check(a)) ERROR("exp invalid"); 89 MPFR_EXP(a) = -MPFR_EXP_INVALID; 90 if (mpfr_check(a)) ERROR("-exp invalid"); 91 MPFR_EXP(a) = 0; 92 if (!mpfr_check(a)) ERROR("exp 0"); 93 /* Check Mantissa */ 94 p = MPFR_MANT(a); 95 MPFR_MANT(a) = NULL; 96 if (mpfr_check(a)) ERROR("Mantissa Null Ptr"); 97 MPFR_MANT(a) = p; 98 /* Check size */ 99 s = MPFR_GET_ALLOC_SIZE(a); 100 MPFR_SET_ALLOC_SIZE(a, 0); 101 if (mpfr_check(a)) ERROR("0 size"); 102 MPFR_SET_ALLOC_SIZE(a, MP_SIZE_T_MIN); 103 if (mpfr_check(a)) ERROR("min size"); 104 MPFR_SET_ALLOC_SIZE(a, MPFR_LIMB_SIZE(a)-1 ); 105 if (mpfr_check(a)) ERROR("size < prec"); 106 MPFR_SET_ALLOC_SIZE(a, s); 107 /* Check normal form */ 108 tmp = MPFR_MANT(a)[0]; 109 if ((pr % GMP_NUMB_BITS) != 0) 110 { 111 MPFR_MANT(a)[0] = ~0; 112 if (mpfr_check(a)) ERROR("last bits non 0"); 113 } 114 MPFR_MANT(a)[0] = tmp; 115 MPFR_MANT(a)[MPFR_LIMB_SIZE(a)-1] &= MPFR_LIMB_MASK (GMP_NUMB_BITS-1); 116 if (mpfr_check(a)) ERROR("last bits non 0"); 117 /* Final */ 118 mpfr_set_ui(a, 2137, MPFR_RNDN); 119 if (!mpfr_check(a)) ERROR("after last set"); 120 mpfr_clear (a); 121 if (mpfr_check(a)) ERROR("after clear"); 122 } 123 tests_end_mpfr (); 124 return 0; 125} 126