1 /* Test file for mpfr_check. 2 3 Copyright 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 <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 32 int 33 main (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