| 1 | /* Miscellaneous tests which don't fit anywhere else.
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| 2 | Copyright (C) 2000, 2001, 2004, 2005 Free Software Foundation, Inc.
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| 3 | This file is part of the GNU C Library.
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| 4 |
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| 5 | The GNU C Library is free software; you can redistribute it and/or
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| 6 | modify it under the terms of the GNU Lesser General Public
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| 7 | License as published by the Free Software Foundation; either
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| 8 | version 2.1 of the License, or (at your option) any later version.
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| 9 |
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| 10 | The GNU C Library is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 13 | Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public
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| 16 | License along with the GNU C Library; if not, write to the Free
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| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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| 18 | 02111-1307 USA. */
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| 19 |
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| 20 | #include <fenv.h>
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| 21 | #include <float.h>
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| 22 | #include <ieee754.h>
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| 23 | #include <math.h>
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| 24 | #include <stdio.h>
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| 25 | #include <string.h>
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| 26 |
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| 27 |
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| 28 | int
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| 29 | main (void)
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| 30 | {
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| 31 | int result = 0;
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| 32 |
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| 33 | #ifndef NO_LONG_DOUBLE
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| 34 | {
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| 35 | long double x = 0x100000001ll + (long double) 0.5;
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| 36 | long double q;
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| 37 | long double r;
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| 38 |
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| 39 | r = modfl (x, &q);
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| 40 | if (q != (long double) 0x100000001ll || r != 0.5)
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| 41 | {
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| 42 | printf ("modfl (%Lg, ...) failed\n", x);
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| 43 | result = 1;
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| 44 | }
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| 45 | }
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| 46 |
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| 47 | # if __GNUC__ >= 3 || __GNUC_MINOR__ >= 96
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| 48 | {
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| 49 | long double x;
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| 50 | long double m;
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| 51 | long double r;
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| 52 | int e;
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| 53 | int i;
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| 54 |
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| 55 | # if LDBL_MANT_DIG == 64
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| 56 | m = 0xf.fffffffffffffffp-4L;
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| 57 | # elif LDBL_MANT_DIG == 106
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| 58 | /* This has to match the mantissa of LDBL_MAX which actually does have a
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| 59 | missing bit in the middle. */
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| 60 | m = 0x1.fffffffffffff7ffffffffffff8p-1L;
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| 61 | # elif LDBL_MANT_DIG == 113
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| 62 | m = 0x1.ffffffffffffffffffffffffffffp-1L;
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| 63 | # else
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| 64 | # error "Please adjust"
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| 65 | # endif
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| 66 |
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| 67 | for (i = LDBL_MAX_EXP, x = LDBL_MAX; i >= LDBL_MIN_EXP; --i, x /= 2.0L)
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| 68 | {
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| 69 | /*printf ("2^%d: ", i); shut up! */
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| 70 |
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| 71 | r = frexpl (x, &e);
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| 72 | if (r != m)
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| 73 | {
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| 74 | printf ("mantissa incorrect: %.20La\n", r);
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| 75 | result = 1;
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| 76 | continue;
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| 77 | }
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| 78 | if (e != i)
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| 79 | {
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| 80 | printf ("exponent wrong %d (%.20Lg)\n", e, x);
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| 81 | result = 1;
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| 82 | continue;
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| 83 | }
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| 84 | /* puts ("ok"); */
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| 85 | }
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| 86 |
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| 87 | for (i = LDBL_MIN_EXP, x = LDBL_MIN; i >= LDBL_MIN_EXP - LDBL_MANT_DIG + 1;
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| 88 | --i, x /= 2.0L)
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| 89 | {
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| 90 | /* printf ("2^%d: ", i); shut up! */
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| 91 |
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| 92 | r = frexpl (x, &e);
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| 93 | if (r != 0.5L)
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| 94 | {
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| 95 | printf ("mantissa incorrect: %.20La\n", r);
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| 96 | result = 1;
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| 97 | continue;
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| 98 | }
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| 99 | if (e != i)
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| 100 | {
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| 101 | printf ("exponent wrong %d (%.20Lg)\n", e, x);
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| 102 | result = 1;
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| 103 | continue;
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| 104 | }
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| 105 | /* puts ("ok"); */
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| 106 | }
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| 107 |
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| 108 | }
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| 109 | # endif
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| 110 |
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| 111 | #if 0
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| 112 | {
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| 113 | int e;
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| 114 | long double r = frexpl (LDBL_MIN * LDBL_EPSILON, &e);
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| 115 |
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| 116 | if (r != 0.5)
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| 117 | {
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| 118 | printf ("frexpl (LDBL_MIN * LDBL_EPSILON, ...): mantissa wrong: %Lg\n",
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| 119 | r);
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| 120 | result = 1;
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| 121 | }
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| 122 | else if (e != -16444)
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| 123 | {
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| 124 | printf ("frexpl (LDBL_MIN * LDBL_EPSILON, ...): exponent wrong: %d\n",
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| 125 | e);
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| 126 | result = 1;
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| 127 | }
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| 128 | }
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| 129 | #endif
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| 130 | #endif
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| 131 |
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| 132 | {
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| 133 | double x = 0x100000001ll + (double) 0.5;
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| 134 | double q;
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| 135 | double r;
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| 136 |
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| 137 | r = modf (x, &q);
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| 138 | if (q != (double) 0x100000001ll || r != 0.5)
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| 139 | {
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| 140 | printf ("modf (%g, ...) failed\n", x);
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| 141 | result = 1;
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| 142 | }
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| 143 | }
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| 144 |
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| 145 | {
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| 146 | union ieee754_float v1;
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| 147 | union ieee754_float v2;
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| 148 | float f;
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| 149 |
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| 150 | v1.f = f = FLT_MIN;
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| 151 | if (fpclassify (f) != FP_NORMAL)
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| 152 | {
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| 153 | printf ("fpclassify (FLT_MIN) failed: %d\n", fpclassify (f));
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| 154 | result = 1;
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| 155 | }
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| 156 | f = nextafterf (f, FLT_MIN / 2.0f);
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| 157 | if (fpclassify (f) != FP_SUBNORMAL)
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| 158 | {
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| 159 | printf ("fpclassify (FLT_MIN-epsilon) failed: %d\n", fpclassify (f));
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| 160 | result = 1;
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| 161 | }
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| 162 | v2.f = f = nextafterf (f, FLT_MIN);
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| 163 | if (fpclassify (f) != FP_NORMAL)
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| 164 | {
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| 165 | printf ("fpclassify (FLT_MIN-epsilon+epsilon) failed: %d\n",
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| 166 | fpclassify (f));
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| 167 | result = 1;
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| 168 | }
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| 169 |
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| 170 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 171 | {
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| 172 | printf ("FLT_MIN: mantissa differs: %8x vs %8x\n",
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| 173 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 174 | result = 1;
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| 175 | }
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| 176 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 177 | {
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| 178 | printf ("FLT_MIN: exponent differs: %4x vs %4x\n",
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| 179 | v1.ieee.exponent, v2.ieee.exponent);
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| 180 | result = 1;
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| 181 | }
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| 182 | if (v1.ieee.negative != v2.ieee.negative)
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| 183 | {
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| 184 | printf ("FLT_MIN: negative differs: %d vs %d\n",
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| 185 | v1.ieee.negative, v2.ieee.negative);
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| 186 | result = 1;
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| 187 | }
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| 188 |
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| 189 | v1.f = f = -FLT_MIN;
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| 190 | if (fpclassify (f) != FP_NORMAL)
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| 191 | {
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| 192 | printf ("fpclassify (-FLT_MIN) failed: %d\n", fpclassify (f));
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| 193 | result = 1;
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| 194 | }
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| 195 | f = nextafterf (f, -FLT_MIN / 2.0f);
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| 196 | if (fpclassify (f) != FP_SUBNORMAL)
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| 197 | {
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| 198 | printf ("fpclassify (-FLT_MIN-epsilon) failed: %d\n", fpclassify (f));
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| 199 | result = 1;
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| 200 | }
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| 201 | v2.f = f = nextafterf (f, -FLT_MIN);
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| 202 | if (fpclassify (f) != FP_NORMAL)
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| 203 | {
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| 204 | printf ("fpclassify (-FLT_MIN-epsilon+epsilon) failed: %d\n",
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| 205 | fpclassify (f));
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| 206 | result = 1;
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| 207 | }
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| 208 |
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| 209 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 210 | {
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| 211 | printf ("-FLT_MIN: mantissa differs: %8x vs %8x\n",
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| 212 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 213 | result = 1;
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| 214 | }
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| 215 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 216 | {
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| 217 | printf ("-FLT_MIN: exponent differs: %4x vs %4x\n",
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| 218 | v1.ieee.exponent, v2.ieee.exponent);
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| 219 | result = 1;
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| 220 | }
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| 221 | if (v1.ieee.negative != v2.ieee.negative)
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| 222 | {
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| 223 | printf ("-FLT_MIN: negative differs: %d vs %d\n",
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| 224 | v1.ieee.negative, v2.ieee.negative);
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| 225 | result = 1;
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| 226 | }
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| 227 |
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| 228 | f = FLT_MAX;
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| 229 | if (fpclassify (f) != FP_NORMAL)
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| 230 | {
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| 231 | printf ("fpclassify (FLT_MAX) failed: %d\n", fpclassify (f));
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| 232 | result = 1;
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| 233 | }
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| 234 | f = nextafterf (f, INFINITY);
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| 235 | if (fpclassify (f) != FP_INFINITE)
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| 236 | {
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| 237 | printf ("fpclassify (FLT_MAX+epsilon) failed: %d\n", fpclassify (f));
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| 238 | result = 1;
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| 239 | }
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| 240 |
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| 241 | f = -FLT_MAX;
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| 242 | if (fpclassify (f) != FP_NORMAL)
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| 243 | {
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| 244 | printf ("fpclassify (-FLT_MAX) failed: %d\n", fpclassify (f));
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| 245 | result = 1;
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| 246 | }
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| 247 | f = nextafterf (f, -INFINITY);
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| 248 | if (fpclassify (f) != FP_INFINITE)
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| 249 | {
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| 250 | printf ("fpclassify (-FLT_MAX-epsilon) failed: %d\n", fpclassify (f));
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| 251 | result = 1;
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| 252 | }
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| 253 |
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| 254 | v1.f = f = 0.0625;
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| 255 | f = nextafterf (f, 0.0);
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| 256 | v2.f = f = nextafterf (f, 1.0);
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| 257 |
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| 258 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 259 | {
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| 260 | printf ("0.0625f down: mantissa differs: %8x vs %8x\n",
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| 261 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 262 | result = 1;
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| 263 | }
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| 264 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 265 | {
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| 266 | printf ("0.0625f down: exponent differs: %4x vs %4x\n",
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| 267 | v1.ieee.exponent, v2.ieee.exponent);
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| 268 | result = 1;
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| 269 | }
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| 270 | if (v1.ieee.negative != v2.ieee.negative)
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| 271 | {
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| 272 | printf ("0.0625f down: negative differs: %d vs %d\n",
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| 273 | v1.ieee.negative, v2.ieee.negative);
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| 274 | result = 1;
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| 275 | }
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| 276 |
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| 277 | v1.f = f = 0.0625;
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| 278 | f = nextafterf (f, 1.0);
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| 279 | v2.f = f = nextafterf (f, 0.0);
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| 280 |
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| 281 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 282 | {
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| 283 | printf ("0.0625f up: mantissa differs: %8x vs %8x\n",
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| 284 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 285 | result = 1;
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| 286 | }
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| 287 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 288 | {
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| 289 | printf ("0.0625f up: exponent differs: %4x vs %4x\n",
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| 290 | v1.ieee.exponent, v2.ieee.exponent);
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| 291 | result = 1;
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| 292 | }
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| 293 | if (v1.ieee.negative != v2.ieee.negative)
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| 294 | {
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| 295 | printf ("0.0625f up: negative differs: %d vs %d\n",
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| 296 | v1.ieee.negative, v2.ieee.negative);
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| 297 | result = 1;
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| 298 | }
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| 299 |
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| 300 | v1.f = f = -0.0625;
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| 301 | f = nextafterf (f, 0.0);
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| 302 | v2.f = f = nextafterf (f, -1.0);
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| 303 |
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| 304 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 305 | {
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| 306 | printf ("-0.0625f up: mantissa differs: %8x vs %8x\n",
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| 307 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 308 | result = 1;
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| 309 | }
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| 310 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 311 | {
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| 312 | printf ("-0.0625f up: exponent differs: %4x vs %4x\n",
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| 313 | v1.ieee.exponent, v2.ieee.exponent);
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| 314 | result = 1;
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| 315 | }
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| 316 | if (v1.ieee.negative != v2.ieee.negative)
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| 317 | {
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| 318 | printf ("-0.0625f up: negative differs: %d vs %d\n",
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| 319 | v1.ieee.negative, v2.ieee.negative);
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| 320 | result = 1;
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| 321 | }
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| 322 |
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| 323 | v1.f = f = -0.0625;
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| 324 | f = nextafterf (f, -1.0);
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| 325 | v2.f = f = nextafterf (f, 0.0);
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| 326 |
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| 327 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 328 | {
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| 329 | printf ("-0.0625f down: mantissa differs: %8x vs %8x\n",
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| 330 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 331 | result = 1;
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| 332 | }
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| 333 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 334 | {
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| 335 | printf ("-0.0625f down: exponent differs: %4x vs %4x\n",
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| 336 | v1.ieee.exponent, v2.ieee.exponent);
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| 337 | result = 1;
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| 338 | }
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| 339 | if (v1.ieee.negative != v2.ieee.negative)
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| 340 | {
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| 341 | printf ("-0.0625f down: negative differs: %d vs %d\n",
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| 342 | v1.ieee.negative, v2.ieee.negative);
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| 343 | result = 1;
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| 344 | }
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| 345 |
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| 346 | v1.f = f = 0.0f;
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| 347 | f = nextafterf (f, 1.0);
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| 348 | v2.f = nextafterf (f, -1.0);
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| 349 |
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| 350 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 351 | {
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| 352 | printf ("0.0f up: mantissa differs: %8x vs %8x\n",
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| 353 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 354 | result = 1;
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| 355 | }
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| 356 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 357 | {
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| 358 | printf ("0.0f up: exponent differs: %4x vs %4x\n",
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| 359 | v1.ieee.exponent, v2.ieee.exponent);
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| 360 | result = 1;
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| 361 | }
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| 362 | if (0 != v2.ieee.negative)
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| 363 | {
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| 364 | printf ("0.0f up: negative differs: 0 vs %d\n",
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| 365 | v2.ieee.negative);
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| 366 | result = 1;
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| 367 | }
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| 368 |
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| 369 | v1.f = f = 0.0f;
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| 370 | f = nextafterf (f, -1.0);
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| 371 | v2.f = nextafterf (f, 1.0);
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| 372 |
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| 373 | if (v1.ieee.mantissa != v2.ieee.mantissa)
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| 374 | {
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| 375 | printf ("0.0f down: mantissa differs: %8x vs %8x\n",
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| 376 | v1.ieee.mantissa, v2.ieee.mantissa);
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| 377 | result = 1;
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| 378 | }
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| 379 | if (v1.ieee.exponent != v2.ieee.exponent)
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| 380 | {
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| 381 | printf ("0.0f down: exponent differs: %4x vs %4x\n",
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| 382 | v1.ieee.exponent, v2.ieee.exponent);
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| 383 | result = 1;
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| 384 | }
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| 385 | if (1 != v2.ieee.negative)
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| 386 | {
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| 387 | printf ("0.0f down: negative differs: 1 vs %d\n",
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| 388 | v2.ieee.negative);
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| 389 | result = 1;
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| 390 | }
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| 391 |
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| 392 | if (nextafterf (0.0f, INFINITY) != nextafterf (0.0f, 1.0f)
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| 393 | || nextafterf (-0.0f, INFINITY) != nextafterf (-0.0f, 1.0f)
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| 394 | || nextafterf (0.0f, -INFINITY) != nextafterf (0.0f, -1.0f)
|
|---|
| 395 | || nextafterf (-0.0f, -INFINITY) != nextafterf (-0.0f, -1.0f))
|
|---|
| 396 | {
|
|---|
| 397 | printf ("nextafterf (+-0, +-Inf) != nextafterf (+-0, +-1)\n");
|
|---|
| 398 | result = 1;
|
|---|
| 399 | }
|
|---|
| 400 |
|
|---|
| 401 | if (nexttowardf (0.0f, INFINITY) != nexttowardf (0.0f, 1.0f)
|
|---|
| 402 | || nexttowardf (-0.0f, INFINITY) != nexttowardf (-0.0f, 1.0f)
|
|---|
| 403 | || nexttowardf (0.0f, -INFINITY) != nexttowardf (0.0f, -1.0f)
|
|---|
| 404 | || nexttowardf (-0.0f, -INFINITY) != nexttowardf (-0.0f, -1.0f))
|
|---|
| 405 | {
|
|---|
| 406 | printf ("nexttowardf (+-0, +-Inf) != nexttowardf (+-0, +-1)\n");
|
|---|
| 407 | result = 1;
|
|---|
| 408 | }
|
|---|
| 409 | }
|
|---|
| 410 |
|
|---|
| 411 | {
|
|---|
| 412 | union ieee754_double v1;
|
|---|
| 413 | union ieee754_double v2;
|
|---|
| 414 | double d;
|
|---|
| 415 |
|
|---|
| 416 | v1.d = d = DBL_MIN;
|
|---|
| 417 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 418 | {
|
|---|
| 419 | printf ("fpclassify (DBL_MIN) failed: %d\n", fpclassify (d));
|
|---|
| 420 | result = 1;
|
|---|
| 421 | }
|
|---|
| 422 | d = nextafter (d, DBL_MIN / 2.0);
|
|---|
| 423 | if (fpclassify (d) != FP_SUBNORMAL)
|
|---|
| 424 | {
|
|---|
| 425 | printf ("fpclassify (DBL_MIN-epsilon) failed: %d\n", fpclassify (d));
|
|---|
| 426 | result = 1;
|
|---|
| 427 | }
|
|---|
| 428 | v2.d = d = nextafter (d, DBL_MIN);
|
|---|
| 429 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 430 | {
|
|---|
| 431 | printf ("fpclassify (DBL_MIN-epsilon+epsilon) failed: %d\n",
|
|---|
| 432 | fpclassify (d));
|
|---|
| 433 | result = 1;
|
|---|
| 434 | }
|
|---|
| 435 |
|
|---|
| 436 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 437 | {
|
|---|
| 438 | printf ("DBL_MIN: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 439 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 440 | result = 1;
|
|---|
| 441 | }
|
|---|
| 442 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 443 | {
|
|---|
| 444 | printf ("DBL_MIN: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 445 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 446 | result = 1;
|
|---|
| 447 | }
|
|---|
| 448 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 449 | {
|
|---|
| 450 | printf ("DBL_MIN: exponent differs: %4x vs %4x\n",
|
|---|
| 451 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 452 | result = 1;
|
|---|
| 453 | }
|
|---|
| 454 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 455 | {
|
|---|
| 456 | printf ("DBL_MIN: negative differs: %d vs %d\n",
|
|---|
| 457 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 458 | result = 1;
|
|---|
| 459 | }
|
|---|
| 460 |
|
|---|
| 461 | v1.d = d = -DBL_MIN;
|
|---|
| 462 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 463 | {
|
|---|
| 464 | printf ("fpclassify (-DBL_MIN) failed: %d\n", fpclassify (d));
|
|---|
| 465 | result = 1;
|
|---|
| 466 | }
|
|---|
| 467 | d = nextafter (d, -DBL_MIN / 2.0);
|
|---|
| 468 | if (fpclassify (d) != FP_SUBNORMAL)
|
|---|
| 469 | {
|
|---|
| 470 | printf ("fpclassify (-DBL_MIN-epsilon) failed: %d\n", fpclassify (d));
|
|---|
| 471 | result = 1;
|
|---|
| 472 | }
|
|---|
| 473 | v2.d = d = nextafter (d, -DBL_MIN);
|
|---|
| 474 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 475 | {
|
|---|
| 476 | printf ("fpclassify (-DBL_MIN-epsilon+epsilon) failed: %d\n",
|
|---|
| 477 | fpclassify (d));
|
|---|
| 478 | result = 1;
|
|---|
| 479 | }
|
|---|
| 480 |
|
|---|
| 481 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 482 | {
|
|---|
| 483 | printf ("-DBL_MIN: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 484 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 485 | result = 1;
|
|---|
| 486 | }
|
|---|
| 487 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 488 | {
|
|---|
| 489 | printf ("-DBL_MIN: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 490 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 491 | result = 1;
|
|---|
| 492 | }
|
|---|
| 493 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 494 | {
|
|---|
| 495 | printf ("-DBL_MIN: exponent differs: %4x vs %4x\n",
|
|---|
| 496 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 497 | result = 1;
|
|---|
| 498 | }
|
|---|
| 499 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 500 | {
|
|---|
| 501 | printf ("-DBL_MIN: negative differs: %d vs %d\n",
|
|---|
| 502 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 503 | result = 1;
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | d = DBL_MAX;
|
|---|
| 507 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 508 | {
|
|---|
| 509 | printf ("fpclassify (DBL_MAX) failed: %d\n", fpclassify (d));
|
|---|
| 510 | result = 1;
|
|---|
| 511 | }
|
|---|
| 512 | d = nextafter (d, INFINITY);
|
|---|
| 513 | if (fpclassify (d) != FP_INFINITE)
|
|---|
| 514 | {
|
|---|
| 515 | printf ("fpclassify (DBL_MAX+epsilon) failed: %d\n", fpclassify (d));
|
|---|
| 516 | result = 1;
|
|---|
| 517 | }
|
|---|
| 518 |
|
|---|
| 519 | d = -DBL_MAX;
|
|---|
| 520 | if (fpclassify (d) != FP_NORMAL)
|
|---|
| 521 | {
|
|---|
| 522 | printf ("fpclassify (-DBL_MAX) failed: %d\n", fpclassify (d));
|
|---|
| 523 | result = 1;
|
|---|
| 524 | }
|
|---|
| 525 | d = nextafter (d, -INFINITY);
|
|---|
| 526 | if (fpclassify (d) != FP_INFINITE)
|
|---|
| 527 | {
|
|---|
| 528 | printf ("fpclassify (-DBL_MAX-epsilon) failed: %d\n", fpclassify (d));
|
|---|
| 529 | result = 1;
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | v1.d = d = 0.0625;
|
|---|
| 533 | d = nextafter (d, 0.0);
|
|---|
| 534 | v2.d = d = nextafter (d, 1.0);
|
|---|
| 535 |
|
|---|
| 536 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 537 | {
|
|---|
| 538 | printf ("0.0625 down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 539 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 540 | result = 1;
|
|---|
| 541 | }
|
|---|
| 542 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 543 | {
|
|---|
| 544 | printf ("0.0625 down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 545 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 546 | result = 1;
|
|---|
| 547 | }
|
|---|
| 548 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 549 | {
|
|---|
| 550 | printf ("0.0625 down: exponent differs: %4x vs %4x\n",
|
|---|
| 551 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 552 | result = 1;
|
|---|
| 553 | }
|
|---|
| 554 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 555 | {
|
|---|
| 556 | printf ("0.0625 down: negative differs: %d vs %d\n",
|
|---|
| 557 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 558 | result = 1;
|
|---|
| 559 | }
|
|---|
| 560 |
|
|---|
| 561 | v1.d = d = 0.0625;
|
|---|
| 562 | d = nextafter (d, 1.0);
|
|---|
| 563 | v2.d = d = nextafter (d, 0.0);
|
|---|
| 564 |
|
|---|
| 565 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 566 | {
|
|---|
| 567 | printf ("0.0625 up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 568 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 569 | result = 1;
|
|---|
| 570 | }
|
|---|
| 571 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 572 | {
|
|---|
| 573 | printf ("0.0625 up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 574 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 575 | result = 1;
|
|---|
| 576 | }
|
|---|
| 577 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 578 | {
|
|---|
| 579 | printf ("0.0625 up: exponent differs: %4x vs %4x\n",
|
|---|
| 580 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 581 | result = 1;
|
|---|
| 582 | }
|
|---|
| 583 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 584 | {
|
|---|
| 585 | printf ("0.0625 up: negative differs: %d vs %d\n",
|
|---|
| 586 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 587 | result = 1;
|
|---|
| 588 | }
|
|---|
| 589 |
|
|---|
| 590 | v1.d = d = -0.0625;
|
|---|
| 591 | d = nextafter (d, 0.0);
|
|---|
| 592 | v2.d = d = nextafter (d, -1.0);
|
|---|
| 593 |
|
|---|
| 594 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 595 | {
|
|---|
| 596 | printf ("-0.0625 up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 597 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 598 | result = 1;
|
|---|
| 599 | }
|
|---|
| 600 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 601 | {
|
|---|
| 602 | printf ("-0.0625 up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 603 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 604 | result = 1;
|
|---|
| 605 | }
|
|---|
| 606 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 607 | {
|
|---|
| 608 | printf ("-0.0625 up: exponent differs: %4x vs %4x\n",
|
|---|
| 609 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 610 | result = 1;
|
|---|
| 611 | }
|
|---|
| 612 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 613 | {
|
|---|
| 614 | printf ("-0.0625 up: negative differs: %d vs %d\n",
|
|---|
| 615 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 616 | result = 1;
|
|---|
| 617 | }
|
|---|
| 618 |
|
|---|
| 619 | v1.d = d = -0.0625;
|
|---|
| 620 | d = nextafter (d, -1.0);
|
|---|
| 621 | v2.d = d = nextafter (d, 0.0);
|
|---|
| 622 |
|
|---|
| 623 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 624 | {
|
|---|
| 625 | printf ("-0.0625 down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 626 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 627 | result = 1;
|
|---|
| 628 | }
|
|---|
| 629 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 630 | {
|
|---|
| 631 | printf ("-0.0625 down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 632 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 633 | result = 1;
|
|---|
| 634 | }
|
|---|
| 635 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 636 | {
|
|---|
| 637 | printf ("-0.0625 down: exponent differs: %4x vs %4x\n",
|
|---|
| 638 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 639 | result = 1;
|
|---|
| 640 | }
|
|---|
| 641 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 642 | {
|
|---|
| 643 | printf ("-0.0625 down: negative differs: %d vs %d\n",
|
|---|
| 644 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 645 | result = 1;
|
|---|
| 646 | }
|
|---|
| 647 |
|
|---|
| 648 | v1.d = d = 0.0;
|
|---|
| 649 | d = nextafter (d, 1.0);
|
|---|
| 650 | v2.d = nextafter (d, -1.0);
|
|---|
| 651 |
|
|---|
| 652 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 653 | {
|
|---|
| 654 | printf ("0.0 up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 655 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 656 | result = 1;
|
|---|
| 657 | }
|
|---|
| 658 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 659 | {
|
|---|
| 660 | printf ("0.0 up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 661 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 662 | result = 1;
|
|---|
| 663 | }
|
|---|
| 664 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 665 | {
|
|---|
| 666 | printf ("0.0 up: exponent differs: %4x vs %4x\n",
|
|---|
| 667 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 668 | result = 1;
|
|---|
| 669 | }
|
|---|
| 670 | if (0 != v2.ieee.negative)
|
|---|
| 671 | {
|
|---|
| 672 | printf ("0.0 up: negative differs: 0 vs %d\n",
|
|---|
| 673 | v2.ieee.negative);
|
|---|
| 674 | result = 1;
|
|---|
| 675 | }
|
|---|
| 676 |
|
|---|
| 677 | v1.d = d = 0.0;
|
|---|
| 678 | d = nextafter (d, -1.0);
|
|---|
| 679 | v2.d = nextafter (d, 1.0);
|
|---|
| 680 |
|
|---|
| 681 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 682 | {
|
|---|
| 683 | printf ("0.0 down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 684 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 685 | result = 1;
|
|---|
| 686 | }
|
|---|
| 687 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 688 | {
|
|---|
| 689 | printf ("0.0 down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 690 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 691 | result = 1;
|
|---|
| 692 | }
|
|---|
| 693 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 694 | {
|
|---|
| 695 | printf ("0.0 down: exponent differs: %4x vs %4x\n",
|
|---|
| 696 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 697 | result = 1;
|
|---|
| 698 | }
|
|---|
| 699 | if (1 != v2.ieee.negative)
|
|---|
| 700 | {
|
|---|
| 701 | printf ("0.0 down: negative differs: 1 vs %d\n",
|
|---|
| 702 | v2.ieee.negative);
|
|---|
| 703 | result = 1;
|
|---|
| 704 | }
|
|---|
| 705 |
|
|---|
| 706 | if (nextafter (0.0, INFINITY) != nextafter (0.0, 1.0)
|
|---|
| 707 | || nextafter (-0.0, INFINITY) != nextafter (-0.0, 1.0)
|
|---|
| 708 | || nextafter (0.0, -INFINITY) != nextafter (0.0, -1.0)
|
|---|
| 709 | || nextafter (-0.0, -INFINITY) != nextafter (-0.0, -1.0))
|
|---|
| 710 | {
|
|---|
| 711 | printf ("nextafter (+-0, +-Inf) != nextafter (+-0, +-1)\n");
|
|---|
| 712 | result = 1;
|
|---|
| 713 | }
|
|---|
| 714 |
|
|---|
| 715 | if (nexttoward (0.0, INFINITY) != nexttoward (0.0, 1.0)
|
|---|
| 716 | || nexttoward (-0.0, INFINITY) != nexttoward (-0.0, 1.0)
|
|---|
| 717 | || nexttoward (0.0, -INFINITY) != nexttoward (0.0, -1.0)
|
|---|
| 718 | || nexttoward (-0.0, -INFINITY) != nexttoward (-0.0, -1.0))
|
|---|
| 719 | {
|
|---|
| 720 | printf ("nexttoward (+-0, +-Inf) != nexttoward (+-0, +-1)\n");
|
|---|
| 721 | result = 1;
|
|---|
| 722 | }
|
|---|
| 723 | }
|
|---|
| 724 |
|
|---|
| 725 | #ifndef NO_LONG_DOUBLE
|
|---|
| 726 | {
|
|---|
| 727 | union ieee854_long_double v1;
|
|---|
| 728 | union ieee854_long_double v2;
|
|---|
| 729 | long double ld;
|
|---|
| 730 |
|
|---|
| 731 | v1.d = ld = LDBL_MIN;
|
|---|
| 732 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 733 | {
|
|---|
| 734 | printf ("fpclassify (LDBL_MIN) failed: %d\n", fpclassify (ld));
|
|---|
| 735 | result = 1;
|
|---|
| 736 | }
|
|---|
| 737 | ld = nextafterl (ld, LDBL_MIN / 2.0);
|
|---|
| 738 | if (fpclassify (ld) != FP_SUBNORMAL)
|
|---|
| 739 | {
|
|---|
| 740 | printf ("fpclassify (LDBL_MIN-epsilon) failed: %d (%La)\n",
|
|---|
| 741 | fpclassify (ld), ld);
|
|---|
| 742 | result = 1;
|
|---|
| 743 | }
|
|---|
| 744 | v2.d = ld = nextafterl (ld, LDBL_MIN);
|
|---|
| 745 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 746 | {
|
|---|
| 747 | printf ("fpclassify (LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n",
|
|---|
| 748 | fpclassify (ld), ld);
|
|---|
| 749 | result = 1;
|
|---|
| 750 | }
|
|---|
| 751 |
|
|---|
| 752 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 753 | {
|
|---|
| 754 | printf ("LDBL_MIN: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 755 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 756 | result = 1;
|
|---|
| 757 | }
|
|---|
| 758 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 759 | {
|
|---|
| 760 | printf ("LDBL_MIN: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 761 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 762 | result = 1;
|
|---|
| 763 | }
|
|---|
| 764 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 765 | {
|
|---|
| 766 | printf ("LDBL_MIN: exponent differs: %4x vs %4x\n",
|
|---|
| 767 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 768 | result = 1;
|
|---|
| 769 | }
|
|---|
| 770 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 771 | {
|
|---|
| 772 | printf ("LDBL_MIN: negative differs: %d vs %d\n",
|
|---|
| 773 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 774 | result = 1;
|
|---|
| 775 | }
|
|---|
| 776 |
|
|---|
| 777 | v1.d = ld = -LDBL_MIN;
|
|---|
| 778 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 779 | {
|
|---|
| 780 | printf ("fpclassify (-LDBL_MIN) failed: %d\n", fpclassify (ld));
|
|---|
| 781 | result = 1;
|
|---|
| 782 | }
|
|---|
| 783 | ld = nextafterl (ld, -LDBL_MIN / 2.0);
|
|---|
| 784 | if (fpclassify (ld) != FP_SUBNORMAL)
|
|---|
| 785 | {
|
|---|
| 786 | printf ("fpclassify (-LDBL_MIN-epsilon) failed: %d (%La)\n",
|
|---|
| 787 | fpclassify (ld), ld);
|
|---|
| 788 | result = 1;
|
|---|
| 789 | }
|
|---|
| 790 | v2.d = ld = nextafterl (ld, -LDBL_MIN);
|
|---|
| 791 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 792 | {
|
|---|
| 793 | printf ("fpclassify (-LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n",
|
|---|
| 794 | fpclassify (ld), ld);
|
|---|
| 795 | result = 1;
|
|---|
| 796 | }
|
|---|
| 797 |
|
|---|
| 798 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 799 | {
|
|---|
| 800 | printf ("-LDBL_MIN: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 801 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 802 | result = 1;
|
|---|
| 803 | }
|
|---|
| 804 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 805 | {
|
|---|
| 806 | printf ("-LDBL_MIN: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 807 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 808 | result = 1;
|
|---|
| 809 | }
|
|---|
| 810 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 811 | {
|
|---|
| 812 | printf ("-LDBL_MIN: exponent differs: %4x vs %4x\n",
|
|---|
| 813 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 814 | result = 1;
|
|---|
| 815 | }
|
|---|
| 816 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 817 | {
|
|---|
| 818 | printf ("-LDBL_MIN: negative differs: %d vs %d\n",
|
|---|
| 819 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 820 | result = 1;
|
|---|
| 821 | }
|
|---|
| 822 |
|
|---|
| 823 | ld = LDBL_MAX;
|
|---|
| 824 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 825 | {
|
|---|
| 826 | printf ("fpclassify (LDBL_MAX) failed: %d\n", fpclassify (ld));
|
|---|
| 827 | result = 1;
|
|---|
| 828 | }
|
|---|
| 829 | ld = nextafterl (ld, INFINITY);
|
|---|
| 830 | if (fpclassify (ld) != FP_INFINITE)
|
|---|
| 831 | {
|
|---|
| 832 | printf ("fpclassify (LDBL_MAX+epsilon) failed: %d\n", fpclassify (ld));
|
|---|
| 833 | result = 1;
|
|---|
| 834 | }
|
|---|
| 835 |
|
|---|
| 836 | ld = -LDBL_MAX;
|
|---|
| 837 | if (fpclassify (ld) != FP_NORMAL)
|
|---|
| 838 | {
|
|---|
| 839 | printf ("fpclassify (-LDBL_MAX) failed: %d\n", fpclassify (ld));
|
|---|
| 840 | result = 1;
|
|---|
| 841 | }
|
|---|
| 842 | ld = nextafterl (ld, -INFINITY);
|
|---|
| 843 | if (fpclassify (ld) != FP_INFINITE)
|
|---|
| 844 | {
|
|---|
| 845 | printf ("fpclassify (-LDBL_MAX-epsilon) failed: %d\n",
|
|---|
| 846 | fpclassify (ld));
|
|---|
| 847 | result = 1;
|
|---|
| 848 | }
|
|---|
| 849 |
|
|---|
| 850 | v1.d = ld = 0.0625;
|
|---|
| 851 | ld = nextafterl (ld, 0.0);
|
|---|
| 852 | v2.d = ld = nextafterl (ld, 1.0);
|
|---|
| 853 |
|
|---|
| 854 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 855 | {
|
|---|
| 856 | printf ("0.0625L down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 857 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 858 | result = 1;
|
|---|
| 859 | }
|
|---|
| 860 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 861 | {
|
|---|
| 862 | printf ("0.0625L down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 863 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 864 | result = 1;
|
|---|
| 865 | }
|
|---|
| 866 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 867 | {
|
|---|
| 868 | printf ("0.0625L down: exponent differs: %4x vs %4x\n",
|
|---|
| 869 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 870 | result = 1;
|
|---|
| 871 | }
|
|---|
| 872 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 873 | {
|
|---|
| 874 | printf ("0.0625L down: negative differs: %d vs %d\n",
|
|---|
| 875 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 876 | result = 1;
|
|---|
| 877 | }
|
|---|
| 878 |
|
|---|
| 879 | v1.d = ld = 0.0625;
|
|---|
| 880 | ld = nextafterl (ld, 1.0);
|
|---|
| 881 | v2.d = ld = nextafterl (ld, 0.0);
|
|---|
| 882 |
|
|---|
| 883 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 884 | {
|
|---|
| 885 | printf ("0.0625L up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 886 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 887 | result = 1;
|
|---|
| 888 | }
|
|---|
| 889 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 890 | {
|
|---|
| 891 | printf ("0.0625L up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 892 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 893 | result = 1;
|
|---|
| 894 | }
|
|---|
| 895 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 896 | {
|
|---|
| 897 | printf ("0.0625L up: exponent differs: %4x vs %4x\n",
|
|---|
| 898 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 899 | result = 1;
|
|---|
| 900 | }
|
|---|
| 901 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 902 | {
|
|---|
| 903 | printf ("0.0625L up: negative differs: %d vs %d\n",
|
|---|
| 904 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 905 | result = 1;
|
|---|
| 906 | }
|
|---|
| 907 |
|
|---|
| 908 | v1.d = ld = -0.0625;
|
|---|
| 909 | ld = nextafterl (ld, 0.0);
|
|---|
| 910 | v2.d = ld = nextafterl (ld, -1.0);
|
|---|
| 911 |
|
|---|
| 912 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 913 | {
|
|---|
| 914 | printf ("-0.0625L up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 915 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 916 | result = 1;
|
|---|
| 917 | }
|
|---|
| 918 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 919 | {
|
|---|
| 920 | printf ("-0.0625L up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 921 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 922 | result = 1;
|
|---|
| 923 | }
|
|---|
| 924 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 925 | {
|
|---|
| 926 | printf ("-0.0625L up: exponent differs: %4x vs %4x\n",
|
|---|
| 927 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 928 | result = 1;
|
|---|
| 929 | }
|
|---|
| 930 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 931 | {
|
|---|
| 932 | printf ("-0.0625L up: negative differs: %d vs %d\n",
|
|---|
| 933 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 934 | result = 1;
|
|---|
| 935 | }
|
|---|
| 936 |
|
|---|
| 937 | v1.d = ld = -0.0625;
|
|---|
| 938 | ld = nextafterl (ld, -1.0);
|
|---|
| 939 | v2.d = ld = nextafterl (ld, 0.0);
|
|---|
| 940 |
|
|---|
| 941 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 942 | {
|
|---|
| 943 | printf ("-0.0625L down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 944 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 945 | result = 1;
|
|---|
| 946 | }
|
|---|
| 947 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 948 | {
|
|---|
| 949 | printf ("-0.0625L down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 950 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 951 | result = 1;
|
|---|
| 952 | }
|
|---|
| 953 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 954 | {
|
|---|
| 955 | printf ("-0.0625L down: exponent differs: %4x vs %4x\n",
|
|---|
| 956 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 957 | result = 1;
|
|---|
| 958 | }
|
|---|
| 959 | if (v1.ieee.negative != v2.ieee.negative)
|
|---|
| 960 | {
|
|---|
| 961 | printf ("-0.0625L down: negative differs: %d vs %d\n",
|
|---|
| 962 | v1.ieee.negative, v2.ieee.negative);
|
|---|
| 963 | result = 1;
|
|---|
| 964 | }
|
|---|
| 965 |
|
|---|
| 966 | v1.d = ld = 0.0;
|
|---|
| 967 | ld = nextafterl (ld, 1.0);
|
|---|
| 968 | v2.d = nextafterl (ld, -1.0);
|
|---|
| 969 |
|
|---|
| 970 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 971 | {
|
|---|
| 972 | printf ("0.0L up: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 973 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 974 | result = 1;
|
|---|
| 975 | }
|
|---|
| 976 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 977 | {
|
|---|
| 978 | printf ("0.0L up: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 979 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 980 | result = 1;
|
|---|
| 981 | }
|
|---|
| 982 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 983 | {
|
|---|
| 984 | printf ("0.0L up: exponent differs: %4x vs %4x\n",
|
|---|
| 985 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 986 | result = 1;
|
|---|
| 987 | }
|
|---|
| 988 | if (0 != v2.ieee.negative)
|
|---|
| 989 | {
|
|---|
| 990 | printf ("0.0L up: negative differs: 0 vs %d\n",
|
|---|
| 991 | v2.ieee.negative);
|
|---|
| 992 | result = 1;
|
|---|
| 993 | }
|
|---|
| 994 |
|
|---|
| 995 | v1.d = ld = 0.0;
|
|---|
| 996 | ld = nextafterl (ld, -1.0);
|
|---|
| 997 | v2.d = nextafterl (ld, 1.0);
|
|---|
| 998 |
|
|---|
| 999 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0)
|
|---|
| 1000 | {
|
|---|
| 1001 | printf ("0.0L down: mantissa0 differs: %8x vs %8x\n",
|
|---|
| 1002 | v1.ieee.mantissa0, v2.ieee.mantissa0);
|
|---|
| 1003 | result = 1;
|
|---|
| 1004 | }
|
|---|
| 1005 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1)
|
|---|
| 1006 | {
|
|---|
| 1007 | printf ("0.0L down: mantissa1 differs: %8x vs %8x\n",
|
|---|
| 1008 | v1.ieee.mantissa1, v2.ieee.mantissa1);
|
|---|
| 1009 | result = 1;
|
|---|
| 1010 | }
|
|---|
| 1011 | if (v1.ieee.exponent != v2.ieee.exponent)
|
|---|
| 1012 | {
|
|---|
| 1013 | printf ("0.0L down: exponent differs: %4x vs %4x\n",
|
|---|
| 1014 | v1.ieee.exponent, v2.ieee.exponent);
|
|---|
| 1015 | result = 1;
|
|---|
| 1016 | }
|
|---|
| 1017 | if (1 != v2.ieee.negative)
|
|---|
| 1018 | {
|
|---|
| 1019 | printf ("0.0L down: negative differs: 1 vs %d\n",
|
|---|
| 1020 | v2.ieee.negative);
|
|---|
| 1021 | result = 1;
|
|---|
| 1022 | }
|
|---|
| 1023 |
|
|---|
| 1024 | if (nextafterl (0.0, INFINITY) != nextafterl (0.0, 1.0)
|
|---|
| 1025 | || nextafterl (-0.0, INFINITY) != nextafterl (-0.0, 1.0)
|
|---|
| 1026 | || nextafterl (0.0, -INFINITY) != nextafterl (0.0, -1.0)
|
|---|
| 1027 | || nextafterl (-0.0, -INFINITY) != nextafterl (-0.0, -1.0))
|
|---|
| 1028 | {
|
|---|
| 1029 | printf ("nextafterl (+-0, +-Inf) != nextafterl (+-0, +-1)\n");
|
|---|
| 1030 | result = 1;
|
|---|
| 1031 | }
|
|---|
| 1032 |
|
|---|
| 1033 | if (nexttowardl (0.0L, INFINITY) != nexttowardl (0.0L, 1.0L)
|
|---|
| 1034 | || nexttowardl (-0.0L, INFINITY) != nexttowardl (-0.0L, 1.0L)
|
|---|
| 1035 | || nexttowardl (0.0L, -INFINITY) != nexttowardl (0.0L, -1.0L)
|
|---|
| 1036 | || nexttowardl (-0.0L, -INFINITY) != nexttowardl (-0.0L, -1.0L))
|
|---|
| 1037 | {
|
|---|
| 1038 | printf ("nexttowardl (+-0, +-Inf) != nexttowardl (+-0, +-1)\n");
|
|---|
| 1039 | result = 1;
|
|---|
| 1040 | }
|
|---|
| 1041 | }
|
|---|
| 1042 | #endif
|
|---|
| 1043 |
|
|---|
| 1044 | if (! isnormal (FLT_MIN))
|
|---|
| 1045 | {
|
|---|
| 1046 | puts ("isnormal (FLT_MIN) failed");
|
|---|
| 1047 | result = 1;
|
|---|
| 1048 | }
|
|---|
| 1049 | if (! isnormal (DBL_MIN))
|
|---|
| 1050 | {
|
|---|
| 1051 | puts ("isnormal (DBL_MIN) failed");
|
|---|
| 1052 | result = 1;
|
|---|
| 1053 | }
|
|---|
| 1054 | #ifndef NO_LONG_DOUBLE
|
|---|
| 1055 | if (! isnormal (LDBL_MIN))
|
|---|
| 1056 | {
|
|---|
| 1057 | puts ("isnormal (LDBL_MIN) failed");
|
|---|
| 1058 | result = 1;
|
|---|
| 1059 | }
|
|---|
| 1060 | #endif
|
|---|
| 1061 |
|
|---|
| 1062 | #ifdef __i386__
|
|---|
| 1063 | /* This is a test for the strange long doubles in x86 FPUs. */
|
|---|
| 1064 | {
|
|---|
| 1065 | union
|
|---|
| 1066 | {
|
|---|
| 1067 | char b[10];
|
|---|
| 1068 | long double d;
|
|---|
| 1069 | } u =
|
|---|
| 1070 | { .b = { 0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0 } };
|
|---|
| 1071 |
|
|---|
| 1072 | if (fpclassify (u.d) != FP_NORMAL)
|
|---|
| 1073 | {
|
|---|
| 1074 | if ( fpclassify (u.d) == FP_SUBNORMAL
|
|---|
| 1075 | && !isnormal(u.d) && !isnan(u.d) && !isinf(u.d) && isfinite(u.d))
|
|---|
| 1076 | printf ("warning: fpclassify (0x00008000000000000000) failed: FP_SUBNORMAL (%Lg) - TODO investigate this on BSD/LIBC!!!\n", u.d);
|
|---|
| 1077 | else
|
|---|
| 1078 | {
|
|---|
| 1079 | printf ("fpclassify (0x00008000000000000000) failed: %d (%Lg) isnormal=%d isnan=%d isinf=%d isfinite=%d\n",
|
|---|
| 1080 | fpclassify (u.d), u.d, isnormal(u.d), isnan(u.d), isinf(u.d), isfinite(u.d));
|
|---|
| 1081 | result = 1;
|
|---|
| 1082 | }
|
|---|
| 1083 | }
|
|---|
| 1084 | }
|
|---|
| 1085 |
|
|---|
| 1086 | /* Special NaNs in x86 long double. Test for scalbl. */
|
|---|
| 1087 | {
|
|---|
| 1088 | union
|
|---|
| 1089 | {
|
|---|
| 1090 | char b[10];
|
|---|
| 1091 | long double d;
|
|---|
| 1092 | } u =
|
|---|
| 1093 | { .b = { 0, 1, 0, 0, 0, 0, 0, 0xc0, 0xff, 0x7f } };
|
|---|
| 1094 | long double r;
|
|---|
| 1095 |
|
|---|
| 1096 | r = scalbl (u.d, 0.0);
|
|---|
| 1097 | if (!isnan (r))
|
|---|
| 1098 | {
|
|---|
| 1099 | puts ("scalbl(NaN, 0) does not return NaN");
|
|---|
| 1100 | result = 1;
|
|---|
| 1101 | }
|
|---|
| 1102 | else if (memcmp (&r, &u.d, sizeof (double)) != 0)
|
|---|
| 1103 | {
|
|---|
| 1104 | puts ("scalbl(NaN, 0) does not return the same NaN");
|
|---|
| 1105 | result = 1;
|
|---|
| 1106 | }
|
|---|
| 1107 | }
|
|---|
| 1108 | #endif
|
|---|
| 1109 |
|
|---|
| 1110 | #ifndef NO_LONG_DOUBLE
|
|---|
| 1111 | {
|
|---|
| 1112 | long double r;
|
|---|
| 1113 |
|
|---|
| 1114 | feclearexcept (FE_ALL_EXCEPT);
|
|---|
| 1115 | r = scalbl (LDBL_MIN, 2147483647);
|
|---|
| 1116 | if (! isinf (r))
|
|---|
| 1117 | {
|
|---|
| 1118 | puts ("scalbl (LDBL_MIN, 2147483647) does not return Inf");
|
|---|
| 1119 | result = 1;
|
|---|
| 1120 | }
|
|---|
| 1121 | else if (signbit (r) != 0)
|
|---|
| 1122 | {
|
|---|
| 1123 | puts ("scalbl (LDBL_MIN, 2147483647) returns -Inf");
|
|---|
| 1124 | result = 1;
|
|---|
| 1125 | }
|
|---|
| 1126 | else if (fetestexcept (FE_UNDERFLOW))
|
|---|
| 1127 | {
|
|---|
| 1128 | puts ("scalbl(NaN, 0) raises underflow exception");
|
|---|
| 1129 | result = 1;
|
|---|
| 1130 | }
|
|---|
| 1131 |
|
|---|
| 1132 | feclearexcept (FE_ALL_EXCEPT);
|
|---|
| 1133 | r = scalbl (LDBL_MAX, -2147483647);
|
|---|
| 1134 | if (r != 0.0)
|
|---|
| 1135 | {
|
|---|
| 1136 | puts ("scalbl (LDBL_MAX, -2147483647) does not return 0");
|
|---|
| 1137 | result = 1;
|
|---|
| 1138 | }
|
|---|
| 1139 | else if (signbit (r) != 0)
|
|---|
| 1140 | {
|
|---|
| 1141 | puts ("scalbl (LDBL_MAX, -2147483647) returns -Inf");
|
|---|
| 1142 | result = 1;
|
|---|
| 1143 | }
|
|---|
| 1144 | else if (fetestexcept (FE_OVERFLOW))
|
|---|
| 1145 | {
|
|---|
| 1146 | puts ("scalbl(NaN, 0) raises overflow exception");
|
|---|
| 1147 | result = 1;
|
|---|
| 1148 | }
|
|---|
| 1149 | }
|
|---|
| 1150 | #endif
|
|---|
| 1151 |
|
|---|
| 1152 | /* The tests here are very similar to tests earlier in this file,
|
|---|
| 1153 | the important difference is just that there are no intervening
|
|---|
| 1154 | union variables that cause some GCC versions to hide possible
|
|---|
| 1155 | bugs in nextafter* implementation. */
|
|---|
| 1156 | if (nextafterf (nextafterf (FLT_MIN, FLT_MIN / 2.0), FLT_MIN) != FLT_MIN)
|
|---|
| 1157 | {
|
|---|
| 1158 | puts ("nextafterf FLT_MIN test failed");
|
|---|
| 1159 | result = 1;
|
|---|
| 1160 | }
|
|---|
| 1161 | if (nextafterf (nextafterf (-FLT_MIN, -FLT_MIN / 2.0), -FLT_MIN)
|
|---|
| 1162 | != -FLT_MIN)
|
|---|
| 1163 | {
|
|---|
| 1164 | puts ("nextafterf -FLT_MIN test failed");
|
|---|
| 1165 | result = 1;
|
|---|
| 1166 | }
|
|---|
| 1167 | if (nextafter (nextafter (DBL_MIN, DBL_MIN / 2.0), DBL_MIN) != DBL_MIN)
|
|---|
| 1168 | {
|
|---|
| 1169 | puts ("nextafter DBL_MIN test failed");
|
|---|
| 1170 | result = 1;
|
|---|
| 1171 | }
|
|---|
| 1172 | if (nextafter (nextafter (-DBL_MIN, -DBL_MIN / 2.0), -DBL_MIN) != -DBL_MIN)
|
|---|
| 1173 | {
|
|---|
| 1174 | puts ("nextafter -DBL_MIN test failed");
|
|---|
| 1175 | result = 1;
|
|---|
| 1176 | }
|
|---|
| 1177 | #ifndef NO_LONG_DOUBLE
|
|---|
| 1178 | if (nextafterl (nextafterl (LDBL_MIN, LDBL_MIN / 2.0), LDBL_MIN)
|
|---|
| 1179 | != LDBL_MIN)
|
|---|
| 1180 | {
|
|---|
| 1181 | puts ("nextafterl LDBL_MIN test failed");
|
|---|
| 1182 | result = 1;
|
|---|
| 1183 | }
|
|---|
| 1184 | if (nextafterl (nextafterl (-LDBL_MIN, -LDBL_MIN / 2.0), -LDBL_MIN)
|
|---|
| 1185 | != -LDBL_MIN)
|
|---|
| 1186 | {
|
|---|
| 1187 | puts ("nextafterl -LDBL_MIN test failed");
|
|---|
| 1188 | result = 1;
|
|---|
| 1189 | }
|
|---|
| 1190 | #endif
|
|---|
| 1191 |
|
|---|
| 1192 | return result;
|
|---|
| 1193 | }
|
|---|
