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