projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9861985f | 1 | /* Miscellaneous tests which don't fit anywhere else. |
| eec40917 | 2 | Copyright (C) 2000, 2001 Free Software Foundation, Inc. |
| 9861985f UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Library General Public License as | |
| 7 | published by the Free Software Foundation; either version 2 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Library General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Library General Public | |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 18 | Boston, MA 02111-1307, USA. */ | |
| 19 | ||
| b210e4cc | 20 | #include <fenv.h> |
| eec40917 | 21 | #include <float.h> |
| ddc3ed9d | 22 | #include <ieee754.h> |
| 9861985f UD |
23 | #include <math.h> |
| 24 | #include <stdio.h> | |
| 6d0c4914 | 25 | #include <string.h> |
| 9861985f UD |
26 | |
| 27 | ||
| 28 | int | |
| 29 | main (void) | |
| 30 | { | |
| 31 | int result = 0; | |
| 32 | ||
| a5fe041c UD |
33 | #ifndef NO_LONG_DOUBLE |
| 34 | { | |
| 35 | long double x = 0x100000001ll + (long double) 0.5; | |
| 36 | long double q; | |
| 37 | long double r; | |
| 38 | ||
| 39 | r = modfl (x, &q); | |
| 40 | if (q != (long double) 0x100000001ll || r != 0.5) | |
| 41 | { | |
| 42 | printf ("modfl (%Lg, ...) failed\n", x); | |
| 43 | result = 1; | |
| 44 | } | |
| 45 | } | |
| 79569444 UD |
46 | |
| 47 | # if __GNUC__ >= 3 || __GNUC_MINOR__ >= 96 | |
| 48 | { | |
| 0df757b1 | 49 | long double x; |
| 79569444 | 50 | long double m; |
| 0df757b1 UD |
51 | long double r; |
| 52 | int e; | |
| 79569444 UD |
53 | int i; |
| 54 | ||
| 55 | # if LDBL_MANT_DIG == 64 | |
| 56 | m = 0xf.fffffffffffffffp-4L; | |
| 7b84d129 AJ |
57 | # elif LDBL_MANT_DIG == 113 |
| 58 | m = 0x1.ffffffffffffffffffffffffffffp-1L; | |
| 79569444 UD |
59 | # else |
| 60 | # error "Please adjust" | |
| 61 | # endif | |
| 62 | ||
| 0df757b1 | 63 | for (i = LDBL_MAX_EXP, x = LDBL_MAX; i >= LDBL_MIN_EXP; --i, x /= 2.0L) |
| 79569444 | 64 | { |
| 0df757b1 | 65 | printf ("2^%d: ", i); |
| 79569444 UD |
66 | |
| 67 | r = frexpl (x, &e); | |
| 68 | if (r != m) | |
| 69 | { | |
| 70 | printf ("mantissa incorrect: %.20La\n", r); | |
| 71 | result = 1; | |
| 72 | continue; | |
| 73 | } | |
| 0df757b1 | 74 | if (e != i) |
| 79569444 UD |
75 | { |
| 76 | printf ("exponent wrong %d (%.20Lg)\n", e, x); | |
| 77 | result = 1; | |
| 78 | continue; | |
| 79 | } | |
| 80 | puts ("ok"); | |
| 81 | } | |
| 601d2942 UD |
82 | |
| 83 | for (i = LDBL_MIN_EXP, x = LDBL_MIN; i >= LDBL_MIN_EXP - LDBL_MANT_DIG + 1; | |
| 84 | --i, x /= 2.0L) | |
| 85 | { | |
| 86 | printf ("2^%d: ", i); | |
| 87 | ||
| 88 | r = frexpl (x, &e); | |
| 89 | if (r != 0.5L) | |
| 90 | { | |
| 91 | printf ("mantissa incorrect: %.20La\n", r); | |
| 92 | result = 1; | |
| 93 | continue; | |
| 94 | } | |
| 95 | if (e != i) | |
| 96 | { | |
| 97 | printf ("exponent wrong %d (%.20Lg)\n", e, x); | |
| 98 | result = 1; | |
| 99 | continue; | |
| 100 | } | |
| 101 | puts ("ok"); | |
| 102 | } | |
| 103 | ||
| 79569444 UD |
104 | } |
| 105 | # endif | |
| 6d0c4914 UD |
106 | |
| 107 | #if 0 | |
| 108 | { | |
| 109 | int e; | |
| 110 | long double r = frexpl (LDBL_MIN * LDBL_EPSILON, &e); | |
| 111 | ||
| 112 | if (r != 0.5) | |
| 113 | { | |
| 114 | printf ("frexpl (LDBL_MIN * LDBL_EPSILON, ...): mantissa wrong: %Lg\n", | |
| 115 | r); | |
| 116 | result = 1; | |
| 117 | } | |
| 118 | else if (e != -16444) | |
| 119 | { | |
| 120 | printf ("frexpl (LDBL_MIN * LDBL_EPSILON, ...): exponent wrong: %d\n", | |
| 121 | e); | |
| 122 | result = 1; | |
| 123 | } | |
| 124 | } | |
| 125 | #endif | |
| a5fe041c | 126 | #endif |
| 9861985f UD |
127 | |
| 128 | { | |
| 129 | double x = 0x100000001ll + (double) 0.5; | |
| 130 | double q; | |
| 131 | double r; | |
| 132 | ||
| 133 | r = modf (x, &q); | |
| 134 | if (q != (double) 0x100000001ll || r != 0.5) | |
| 135 | { | |
| 136 | printf ("modf (%g, ...) failed\n", x); | |
| 137 | result = 1; | |
| 138 | } | |
| 139 | } | |
| 140 | ||
| cc46d0cf | 141 | { |
| ddc3ed9d UD |
142 | union ieee754_float v1; |
| 143 | union ieee754_float v2; | |
| cc46d0cf UD |
144 | float f; |
| 145 | ||
| ddc3ed9d | 146 | v1.f = f = FLT_MIN; |
| cc46d0cf UD |
147 | if (fpclassify (f) != FP_NORMAL) |
| 148 | { | |
| 149 | printf ("fpclassify (FLT_MIN) failed: %d\n", fpclassify (f)); | |
| 150 | result = 1; | |
| 151 | } | |
| 152 | f = nextafterf (f, FLT_MIN / 2.0f); | |
| 153 | if (fpclassify (f) != FP_SUBNORMAL) | |
| 154 | { | |
| 155 | printf ("fpclassify (FLT_MIN-epsilon) failed: %d\n", fpclassify (f)); | |
| 156 | result = 1; | |
| 157 | } | |
| ddc3ed9d | 158 | v2.f = f = nextafterf (f, FLT_MIN); |
| cc46d0cf UD |
159 | if (fpclassify (f) != FP_NORMAL) |
| 160 | { | |
| 244cd531 | 161 | printf ("fpclassify (FLT_MIN-epsilon+epsilon) failed: %d\n", |
| cc46d0cf UD |
162 | fpclassify (f)); |
| 163 | result = 1; | |
| 164 | } | |
| 165 | ||
| ddc3ed9d UD |
166 | if (v1.ieee.mantissa != v2.ieee.mantissa) |
| 167 | { | |
| 168 | printf ("FLT_MIN: mantissa differs: %8x vs %8x\n", | |
| 169 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 170 | result = 1; | |
| 171 | } | |
| 172 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 173 | { | |
| 174 | printf ("FLT_MIN: exponent differs: %4x vs %4x\n", | |
| 175 | v1.ieee.exponent, v2.ieee.exponent); | |
| 176 | result = 1; | |
| 177 | } | |
| 178 | if (v1.ieee.negative != v2.ieee.negative) | |
| 179 | { | |
| 180 | printf ("FLT_MIN: negative differs: %d vs %d\n", | |
| 181 | v1.ieee.negative, v2.ieee.negative); | |
| 182 | result = 1; | |
| 183 | } | |
| 184 | ||
| 185 | v1.f = f = -FLT_MIN; | |
| cc46d0cf UD |
186 | if (fpclassify (f) != FP_NORMAL) |
| 187 | { | |
| 188 | printf ("fpclassify (-FLT_MIN) failed: %d\n", fpclassify (f)); | |
| 189 | result = 1; | |
| 190 | } | |
| 191 | f = nextafterf (f, -FLT_MIN / 2.0f); | |
| 192 | if (fpclassify (f) != FP_SUBNORMAL) | |
| 193 | { | |
| 194 | printf ("fpclassify (-FLT_MIN-epsilon) failed: %d\n", fpclassify (f)); | |
| 195 | result = 1; | |
| 196 | } | |
| ddc3ed9d | 197 | v2.f = f = nextafterf (f, -FLT_MIN); |
| cc46d0cf UD |
198 | if (fpclassify (f) != FP_NORMAL) |
| 199 | { | |
| 244cd531 | 200 | printf ("fpclassify (-FLT_MIN-epsilon+epsilon) failed: %d\n", |
| cc46d0cf UD |
201 | fpclassify (f)); |
| 202 | result = 1; | |
| 203 | } | |
| 244cd531 | 204 | |
| ddc3ed9d UD |
205 | if (v1.ieee.mantissa != v2.ieee.mantissa) |
| 206 | { | |
| 207 | printf ("-FLT_MIN: mantissa differs: %8x vs %8x\n", | |
| 208 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 209 | result = 1; | |
| 210 | } | |
| 211 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 212 | { | |
| 213 | printf ("-FLT_MIN: exponent differs: %4x vs %4x\n", | |
| 214 | v1.ieee.exponent, v2.ieee.exponent); | |
| 215 | result = 1; | |
| 216 | } | |
| 217 | if (v1.ieee.negative != v2.ieee.negative) | |
| 218 | { | |
| 219 | printf ("-FLT_MIN: negative differs: %d vs %d\n", | |
| 220 | v1.ieee.negative, v2.ieee.negative); | |
| 221 | result = 1; | |
| 222 | } | |
| 223 | ||
| 244cd531 UD |
224 | f = FLT_MAX; |
| 225 | if (fpclassify (f) != FP_NORMAL) | |
| 226 | { | |
| 227 | printf ("fpclassify (FLT_MAX) failed: %d\n", fpclassify (f)); | |
| 228 | result = 1; | |
| 229 | } | |
| 230 | f = nextafterf (f, INFINITY); | |
| 231 | if (fpclassify (f) != FP_INFINITE) | |
| 232 | { | |
| 233 | printf ("fpclassify (FLT_MAX+epsilon) failed: %d\n", fpclassify (f)); | |
| 234 | result = 1; | |
| 235 | } | |
| 236 | ||
| 237 | f = -FLT_MAX; | |
| 238 | if (fpclassify (f) != FP_NORMAL) | |
| 239 | { | |
| 240 | printf ("fpclassify (-FLT_MAX) failed: %d\n", fpclassify (f)); | |
| 241 | result = 1; | |
| 242 | } | |
| 243 | f = nextafterf (f, -INFINITY); | |
| 244 | if (fpclassify (f) != FP_INFINITE) | |
| 245 | { | |
| 246 | printf ("fpclassify (-FLT_MAX-epsilon) failed: %d\n", fpclassify (f)); | |
| 247 | result = 1; | |
| 248 | } | |
| e3bb40e6 UD |
249 | |
| 250 | v1.f = f = 0.0625; | |
| 251 | f = nextafterf (f, 0.0); | |
| 252 | v2.f = f = nextafterf (f, 1.0); | |
| 253 | ||
| 254 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 255 | { | |
| 256 | printf ("0.0625f down: mantissa differs: %8x vs %8x\n", | |
| 257 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 258 | result = 1; | |
| 259 | } | |
| 260 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 261 | { | |
| 262 | printf ("0.0625f down: exponent differs: %4x vs %4x\n", | |
| 263 | v1.ieee.exponent, v2.ieee.exponent); | |
| 264 | result = 1; | |
| 265 | } | |
| 266 | if (v1.ieee.negative != v2.ieee.negative) | |
| 267 | { | |
| 268 | printf ("0.0625f down: negative differs: %d vs %d\n", | |
| 269 | v1.ieee.negative, v2.ieee.negative); | |
| 270 | result = 1; | |
| 271 | } | |
| 272 | ||
| 273 | v1.f = f = 0.0625; | |
| 274 | f = nextafterf (f, 1.0); | |
| 275 | v2.f = f = nextafterf (f, 0.0); | |
| 276 | ||
| 277 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 278 | { | |
| 279 | printf ("0.0625f up: mantissa differs: %8x vs %8x\n", | |
| 280 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 281 | result = 1; | |
| 282 | } | |
| 283 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 284 | { | |
| 285 | printf ("0.0625f up: exponent differs: %4x vs %4x\n", | |
| 286 | v1.ieee.exponent, v2.ieee.exponent); | |
| 287 | result = 1; | |
| 288 | } | |
| 289 | if (v1.ieee.negative != v2.ieee.negative) | |
| 290 | { | |
| 291 | printf ("0.0625f up: negative differs: %d vs %d\n", | |
| 292 | v1.ieee.negative, v2.ieee.negative); | |
| 293 | result = 1; | |
| 294 | } | |
| 295 | ||
| 296 | v1.f = f = -0.0625; | |
| 297 | f = nextafterf (f, 0.0); | |
| 298 | v2.f = f = nextafterf (f, -1.0); | |
| 299 | ||
| 300 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 301 | { | |
| 302 | printf ("-0.0625f up: mantissa differs: %8x vs %8x\n", | |
| 303 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 304 | result = 1; | |
| 305 | } | |
| 306 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 307 | { | |
| 308 | printf ("-0.0625f up: exponent differs: %4x vs %4x\n", | |
| 309 | v1.ieee.exponent, v2.ieee.exponent); | |
| 310 | result = 1; | |
| 311 | } | |
| 312 | if (v1.ieee.negative != v2.ieee.negative) | |
| 313 | { | |
| 314 | printf ("-0.0625f up: negative differs: %d vs %d\n", | |
| 315 | v1.ieee.negative, v2.ieee.negative); | |
| 316 | result = 1; | |
| 317 | } | |
| 318 | ||
| 319 | v1.f = f = -0.0625; | |
| 320 | f = nextafterf (f, -1.0); | |
| 321 | v2.f = f = nextafterf (f, 0.0); | |
| 322 | ||
| 323 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 324 | { | |
| 325 | printf ("-0.0625f down: mantissa differs: %8x vs %8x\n", | |
| 326 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 327 | result = 1; | |
| 328 | } | |
| 329 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 330 | { | |
| 331 | printf ("-0.0625f down: exponent differs: %4x vs %4x\n", | |
| 332 | v1.ieee.exponent, v2.ieee.exponent); | |
| 333 | result = 1; | |
| 334 | } | |
| 335 | if (v1.ieee.negative != v2.ieee.negative) | |
| 336 | { | |
| 337 | printf ("-0.0625f down: negative differs: %d vs %d\n", | |
| 338 | v1.ieee.negative, v2.ieee.negative); | |
| 339 | result = 1; | |
| 340 | } | |
| 341 | ||
| 342 | v1.f = f = 0.0f; | |
| 343 | f = nextafterf (f, 1.0); | |
| 344 | v2.f = nextafterf (f, -1.0); | |
| 345 | ||
| 346 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 347 | { | |
| 348 | printf ("0.0f up: mantissa differs: %8x vs %8x\n", | |
| 349 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 350 | result = 1; | |
| 351 | } | |
| 352 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 353 | { | |
| 354 | printf ("0.0f up: exponent differs: %4x vs %4x\n", | |
| 355 | v1.ieee.exponent, v2.ieee.exponent); | |
| 356 | result = 1; | |
| 357 | } | |
| 358 | if (0 != v2.ieee.negative) | |
| 359 | { | |
| 360 | printf ("0.0f up: negative differs: 0 vs %d\n", | |
| 361 | v2.ieee.negative); | |
| 362 | result = 1; | |
| 363 | } | |
| 364 | ||
| 365 | v1.f = f = 0.0f; | |
| 366 | f = nextafterf (f, -1.0); | |
| 367 | v2.f = nextafterf (f, 1.0); | |
| 368 | ||
| 369 | if (v1.ieee.mantissa != v2.ieee.mantissa) | |
| 370 | { | |
| 371 | printf ("0.0f down: mantissa differs: %8x vs %8x\n", | |
| 372 | v1.ieee.mantissa, v2.ieee.mantissa); | |
| 373 | result = 1; | |
| 374 | } | |
| 375 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 376 | { | |
| 377 | printf ("0.0f down: exponent differs: %4x vs %4x\n", | |
| 378 | v1.ieee.exponent, v2.ieee.exponent); | |
| 379 | result = 1; | |
| 380 | } | |
| 381 | if (1 != v2.ieee.negative) | |
| 382 | { | |
| 383 | printf ("0.0f down: negative differs: 1 vs %d\n", | |
| 384 | v2.ieee.negative); | |
| 385 | result = 1; | |
| 386 | } | |
| cc46d0cf | 387 | } |
| e3bb40e6 | 388 | |
| cc46d0cf | 389 | { |
| ddc3ed9d UD |
390 | union ieee754_double v1; |
| 391 | union ieee754_double v2; | |
| cc46d0cf UD |
392 | double d; |
| 393 | ||
| ddc3ed9d | 394 | v1.d = d = DBL_MIN; |
| cc46d0cf UD |
395 | if (fpclassify (d) != FP_NORMAL) |
| 396 | { | |
| 397 | printf ("fpclassify (DBL_MIN) failed: %d\n", fpclassify (d)); | |
| 398 | result = 1; | |
| 399 | } | |
| 400 | d = nextafter (d, DBL_MIN / 2.0); | |
| 401 | if (fpclassify (d) != FP_SUBNORMAL) | |
| 402 | { | |
| 403 | printf ("fpclassify (DBL_MIN-epsilon) failed: %d\n", fpclassify (d)); | |
| 404 | result = 1; | |
| 405 | } | |
| ddc3ed9d | 406 | v2.d = d = nextafter (d, DBL_MIN); |
| cc46d0cf UD |
407 | if (fpclassify (d) != FP_NORMAL) |
| 408 | { | |
| 409 | printf ("fpclassify (DBL_MIN-epsilon+epsilon) failed: %d\n", | |
| 410 | fpclassify (d)); | |
| 411 | result = 1; | |
| 412 | } | |
| 413 | ||
| ddc3ed9d UD |
414 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) |
| 415 | { | |
| 416 | printf ("DBL_MIN: mantissa0 differs: %8x vs %8x\n", | |
| 417 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 418 | result = 1; | |
| 419 | } | |
| 420 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 421 | { | |
| 422 | printf ("DBL_MIN: mantissa1 differs: %8x vs %8x\n", | |
| 423 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 424 | result = 1; | |
| 425 | } | |
| 426 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 427 | { | |
| 428 | printf ("DBL_MIN: exponent differs: %4x vs %4x\n", | |
| 429 | v1.ieee.exponent, v2.ieee.exponent); | |
| 430 | result = 1; | |
| 431 | } | |
| 432 | if (v1.ieee.negative != v2.ieee.negative) | |
| 433 | { | |
| 434 | printf ("DBL_MIN: negative differs: %d vs %d\n", | |
| 435 | v1.ieee.negative, v2.ieee.negative); | |
| 436 | result = 1; | |
| 437 | } | |
| 438 | ||
| 439 | v1.d = d = -DBL_MIN; | |
| cc46d0cf UD |
440 | if (fpclassify (d) != FP_NORMAL) |
| 441 | { | |
| 442 | printf ("fpclassify (-DBL_MIN) failed: %d\n", fpclassify (d)); | |
| 443 | result = 1; | |
| 444 | } | |
| 445 | d = nextafter (d, -DBL_MIN / 2.0); | |
| 446 | if (fpclassify (d) != FP_SUBNORMAL) | |
| 447 | { | |
| 448 | printf ("fpclassify (-DBL_MIN-epsilon) failed: %d\n", fpclassify (d)); | |
| 449 | result = 1; | |
| 450 | } | |
| ddc3ed9d | 451 | v2.d = d = nextafter (d, -DBL_MIN); |
| cc46d0cf UD |
452 | if (fpclassify (d) != FP_NORMAL) |
| 453 | { | |
| 454 | printf ("fpclassify (-DBL_MIN-epsilon+epsilon) failed: %d\n", | |
| 455 | fpclassify (d)); | |
| 456 | result = 1; | |
| 457 | } | |
| 244cd531 | 458 | |
| ddc3ed9d UD |
459 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) |
| 460 | { | |
| 461 | printf ("-DBL_MIN: mantissa0 differs: %8x vs %8x\n", | |
| 462 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 463 | result = 1; | |
| 464 | } | |
| 465 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 466 | { | |
| 467 | printf ("-DBL_MIN: mantissa1 differs: %8x vs %8x\n", | |
| 468 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 469 | result = 1; | |
| 470 | } | |
| 471 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 472 | { | |
| 473 | printf ("-DBL_MIN: exponent differs: %4x vs %4x\n", | |
| 474 | v1.ieee.exponent, v2.ieee.exponent); | |
| 475 | result = 1; | |
| 476 | } | |
| 477 | if (v1.ieee.negative != v2.ieee.negative) | |
| 478 | { | |
| 479 | printf ("-DBL_MIN: negative differs: %d vs %d\n", | |
| 480 | v1.ieee.negative, v2.ieee.negative); | |
| 481 | result = 1; | |
| 482 | } | |
| 483 | ||
| 244cd531 UD |
484 | d = DBL_MAX; |
| 485 | if (fpclassify (d) != FP_NORMAL) | |
| 486 | { | |
| 487 | printf ("fpclassify (DBL_MAX) failed: %d\n", fpclassify (d)); | |
| 488 | result = 1; | |
| 489 | } | |
| 490 | d = nextafter (d, INFINITY); | |
| 491 | if (fpclassify (d) != FP_INFINITE) | |
| 492 | { | |
| 493 | printf ("fpclassify (DBL_MAX+epsilon) failed: %d\n", fpclassify (d)); | |
| 494 | result = 1; | |
| 495 | } | |
| 496 | ||
| 497 | d = -DBL_MAX; | |
| 498 | if (fpclassify (d) != FP_NORMAL) | |
| 499 | { | |
| 500 | printf ("fpclassify (-DBL_MAX) failed: %d\n", fpclassify (d)); | |
| 501 | result = 1; | |
| 502 | } | |
| 503 | d = nextafter (d, -INFINITY); | |
| 504 | if (fpclassify (d) != FP_INFINITE) | |
| 505 | { | |
| 506 | printf ("fpclassify (-DBL_MAX-epsilon) failed: %d\n", fpclassify (d)); | |
| 507 | result = 1; | |
| 508 | } | |
| e3bb40e6 UD |
509 | |
| 510 | v1.d = d = 0.0625; | |
| 511 | d = nextafter (d, 0.0); | |
| 512 | v2.d = d = nextafter (d, 1.0); | |
| 513 | ||
| 514 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 515 | { | |
| 516 | printf ("0.0625 down: mantissa0 differs: %8x vs %8x\n", | |
| 517 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 518 | result = 1; | |
| 519 | } | |
| 520 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 521 | { | |
| 522 | printf ("0.0625 down: mantissa1 differs: %8x vs %8x\n", | |
| 523 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 524 | result = 1; | |
| 525 | } | |
| 526 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 527 | { | |
| 528 | printf ("0.0625 down: exponent differs: %4x vs %4x\n", | |
| 529 | v1.ieee.exponent, v2.ieee.exponent); | |
| 530 | result = 1; | |
| 531 | } | |
| 532 | if (v1.ieee.negative != v2.ieee.negative) | |
| 533 | { | |
| 534 | printf ("0.0625 down: negative differs: %d vs %d\n", | |
| 535 | v1.ieee.negative, v2.ieee.negative); | |
| 536 | result = 1; | |
| 537 | } | |
| 538 | ||
| 539 | v1.d = d = 0.0625; | |
| 540 | d = nextafter (d, 1.0); | |
| 541 | v2.d = d = nextafter (d, 0.0); | |
| 542 | ||
| 543 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 544 | { | |
| 545 | printf ("0.0625 up: mantissa0 differs: %8x vs %8x\n", | |
| 546 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 547 | result = 1; | |
| 548 | } | |
| 549 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 550 | { | |
| 551 | printf ("0.0625 up: mantissa1 differs: %8x vs %8x\n", | |
| 552 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 553 | result = 1; | |
| 554 | } | |
| 555 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 556 | { | |
| 557 | printf ("0.0625 up: exponent differs: %4x vs %4x\n", | |
| 558 | v1.ieee.exponent, v2.ieee.exponent); | |
| 559 | result = 1; | |
| 560 | } | |
| 561 | if (v1.ieee.negative != v2.ieee.negative) | |
| 562 | { | |
| 563 | printf ("0.0625 up: negative differs: %d vs %d\n", | |
| 564 | v1.ieee.negative, v2.ieee.negative); | |
| 565 | result = 1; | |
| 566 | } | |
| 567 | ||
| 568 | v1.d = d = -0.0625; | |
| 569 | d = nextafter (d, 0.0); | |
| 570 | v2.d = d = nextafter (d, -1.0); | |
| 571 | ||
| 572 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 573 | { | |
| 574 | printf ("-0.0625 up: mantissa0 differs: %8x vs %8x\n", | |
| 575 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 576 | result = 1; | |
| 577 | } | |
| 578 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 579 | { | |
| 580 | printf ("-0.0625 up: mantissa1 differs: %8x vs %8x\n", | |
| 581 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 582 | result = 1; | |
| 583 | } | |
| 584 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 585 | { | |
| 586 | printf ("-0.0625 up: exponent differs: %4x vs %4x\n", | |
| 587 | v1.ieee.exponent, v2.ieee.exponent); | |
| 588 | result = 1; | |
| 589 | } | |
| 590 | if (v1.ieee.negative != v2.ieee.negative) | |
| 591 | { | |
| 592 | printf ("-0.0625 up: negative differs: %d vs %d\n", | |
| 593 | v1.ieee.negative, v2.ieee.negative); | |
| 594 | result = 1; | |
| 595 | } | |
| 596 | ||
| 597 | v1.d = d = -0.0625; | |
| 598 | d = nextafter (d, -1.0); | |
| 599 | v2.d = d = nextafter (d, 0.0); | |
| 600 | ||
| 601 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 602 | { | |
| 603 | printf ("-0.0625 down: mantissa0 differs: %8x vs %8x\n", | |
| 604 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 605 | result = 1; | |
| 606 | } | |
| 607 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 608 | { | |
| 609 | printf ("-0.0625 down: mantissa1 differs: %8x vs %8x\n", | |
| 610 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 611 | result = 1; | |
| 612 | } | |
| 613 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 614 | { | |
| 615 | printf ("-0.0625 down: exponent differs: %4x vs %4x\n", | |
| 616 | v1.ieee.exponent, v2.ieee.exponent); | |
| 617 | result = 1; | |
| 618 | } | |
| 619 | if (v1.ieee.negative != v2.ieee.negative) | |
| 620 | { | |
| 621 | printf ("-0.0625 down: negative differs: %d vs %d\n", | |
| 622 | v1.ieee.negative, v2.ieee.negative); | |
| 623 | result = 1; | |
| 624 | } | |
| 625 | ||
| 626 | v1.d = d = 0.0; | |
| 627 | d = nextafter (d, 1.0); | |
| 628 | v2.d = nextafter (d, -1.0); | |
| 629 | ||
| 630 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 631 | { | |
| 632 | printf ("0.0 up: mantissa0 differs: %8x vs %8x\n", | |
| 633 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 634 | result = 1; | |
| 635 | } | |
| 636 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 637 | { | |
| 638 | printf ("0.0 up: mantissa1 differs: %8x vs %8x\n", | |
| 639 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 640 | result = 1; | |
| 641 | } | |
| 642 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 643 | { | |
| 644 | printf ("0.0 up: exponent differs: %4x vs %4x\n", | |
| 645 | v1.ieee.exponent, v2.ieee.exponent); | |
| 646 | result = 1; | |
| 647 | } | |
| 648 | if (0 != v2.ieee.negative) | |
| 649 | { | |
| 650 | printf ("0.0 up: negative differs: 0 vs %d\n", | |
| 651 | v2.ieee.negative); | |
| 652 | result = 1; | |
| 653 | } | |
| 654 | ||
| 655 | v1.d = d = 0.0; | |
| 656 | d = nextafter (d, -1.0); | |
| 657 | v2.d = nextafter (d, 1.0); | |
| 658 | ||
| 659 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 660 | { | |
| 661 | printf ("0.0 down: mantissa0 differs: %8x vs %8x\n", | |
| 662 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 663 | result = 1; | |
| 664 | } | |
| 665 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 666 | { | |
| 667 | printf ("0.0 down: mantissa1 differs: %8x vs %8x\n", | |
| 668 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 669 | result = 1; | |
| 670 | } | |
| 671 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 672 | { | |
| 673 | printf ("0.0 down: exponent differs: %4x vs %4x\n", | |
| 674 | v1.ieee.exponent, v2.ieee.exponent); | |
| 675 | result = 1; | |
| 676 | } | |
| 677 | if (1 != v2.ieee.negative) | |
| 678 | { | |
| 679 | printf ("0.0 down: negative differs: 1 vs %d\n", | |
| 680 | v2.ieee.negative); | |
| 681 | result = 1; | |
| 682 | } | |
| cc46d0cf | 683 | } |
| e3bb40e6 | 684 | |
| 0df757b1 | 685 | #ifndef NO_LONG_DOUBLE |
| cc46d0cf | 686 | { |
| ddc3ed9d UD |
687 | union ieee854_long_double v1; |
| 688 | union ieee854_long_double v2; | |
| cc46d0cf UD |
689 | long double ld; |
| 690 | ||
| ddc3ed9d | 691 | v1.d = ld = LDBL_MIN; |
| cc46d0cf UD |
692 | if (fpclassify (ld) != FP_NORMAL) |
| 693 | { | |
| 694 | printf ("fpclassify (LDBL_MIN) failed: %d\n", fpclassify (ld)); | |
| 695 | result = 1; | |
| 696 | } | |
| 697 | ld = nextafterl (ld, LDBL_MIN / 2.0); | |
| 698 | if (fpclassify (ld) != FP_SUBNORMAL) | |
| 699 | { | |
| 700 | printf ("fpclassify (LDBL_MIN-epsilon) failed: %d (%La)\n", | |
| 701 | fpclassify (ld), ld); | |
| 702 | result = 1; | |
| 703 | } | |
| ddc3ed9d | 704 | v2.d = ld = nextafterl (ld, LDBL_MIN); |
| cc46d0cf UD |
705 | if (fpclassify (ld) != FP_NORMAL) |
| 706 | { | |
| 707 | printf ("fpclassify (LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n", | |
| 708 | fpclassify (ld), ld); | |
| 709 | result = 1; | |
| 710 | } | |
| 711 | ||
| ddc3ed9d UD |
712 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) |
| 713 | { | |
| 714 | printf ("LDBL_MIN: mantissa0 differs: %8x vs %8x\n", | |
| 715 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 716 | result = 1; | |
| 717 | } | |
| 718 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 719 | { | |
| 720 | printf ("LDBL_MIN: mantissa1 differs: %8x vs %8x\n", | |
| 721 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 722 | result = 1; | |
| 723 | } | |
| 724 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 725 | { | |
| 726 | printf ("LDBL_MIN: exponent differs: %4x vs %4x\n", | |
| 727 | v1.ieee.exponent, v2.ieee.exponent); | |
| 728 | result = 1; | |
| 729 | } | |
| 730 | if (v1.ieee.negative != v2.ieee.negative) | |
| 731 | { | |
| 732 | printf ("LDBL_MIN: negative differs: %d vs %d\n", | |
| 733 | v1.ieee.negative, v2.ieee.negative); | |
| 734 | result = 1; | |
| 735 | } | |
| 736 | ||
| 737 | v1.d = ld = -LDBL_MIN; | |
| cc46d0cf UD |
738 | if (fpclassify (ld) != FP_NORMAL) |
| 739 | { | |
| 740 | printf ("fpclassify (-LDBL_MIN) failed: %d\n", fpclassify (ld)); | |
| 741 | result = 1; | |
| 742 | } | |
| 743 | ld = nextafterl (ld, -LDBL_MIN / 2.0); | |
| 744 | if (fpclassify (ld) != FP_SUBNORMAL) | |
| 745 | { | |
| 746 | printf ("fpclassify (-LDBL_MIN-epsilon) failed: %d (%La)\n", | |
| 747 | fpclassify (ld), ld); | |
| 748 | result = 1; | |
| 749 | } | |
| ddc3ed9d | 750 | v2.d = ld = nextafterl (ld, -LDBL_MIN); |
| cc46d0cf UD |
751 | if (fpclassify (ld) != FP_NORMAL) |
| 752 | { | |
| 753 | printf ("fpclassify (-LDBL_MIN-epsilon+epsilon) failed: %d (%La)\n", | |
| 754 | fpclassify (ld), ld); | |
| 755 | result = 1; | |
| 756 | } | |
| 244cd531 | 757 | |
| ddc3ed9d UD |
758 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) |
| 759 | { | |
| 760 | printf ("-LDBL_MIN: mantissa0 differs: %8x vs %8x\n", | |
| 761 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 762 | result = 1; | |
| 763 | } | |
| 764 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 765 | { | |
| 766 | printf ("-LDBL_MIN: mantissa1 differs: %8x vs %8x\n", | |
| 767 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 768 | result = 1; | |
| 769 | } | |
| 770 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 771 | { | |
| 772 | printf ("-LDBL_MIN: exponent differs: %4x vs %4x\n", | |
| 773 | v1.ieee.exponent, v2.ieee.exponent); | |
| 774 | result = 1; | |
| 775 | } | |
| 776 | if (v1.ieee.negative != v2.ieee.negative) | |
| 777 | { | |
| 778 | printf ("-LDBL_MIN: negative differs: %d vs %d\n", | |
| 779 | v1.ieee.negative, v2.ieee.negative); | |
| 780 | result = 1; | |
| 781 | } | |
| 782 | ||
| 244cd531 UD |
783 | ld = LDBL_MAX; |
| 784 | if (fpclassify (ld) != FP_NORMAL) | |
| 785 | { | |
| 786 | printf ("fpclassify (LDBL_MAX) failed: %d\n", fpclassify (ld)); | |
| 787 | result = 1; | |
| 788 | } | |
| 789 | ld = nextafterl (ld, INFINITY); | |
| 790 | if (fpclassify (ld) != FP_INFINITE) | |
| 791 | { | |
| 792 | printf ("fpclassify (LDBL_MAX+epsilon) failed: %d\n", fpclassify (ld)); | |
| 793 | result = 1; | |
| 794 | } | |
| 795 | ||
| 796 | ld = -LDBL_MAX; | |
| 797 | if (fpclassify (ld) != FP_NORMAL) | |
| 798 | { | |
| 799 | printf ("fpclassify (-LDBL_MAX) failed: %d\n", fpclassify (ld)); | |
| 800 | result = 1; | |
| 801 | } | |
| 802 | ld = nextafterl (ld, -INFINITY); | |
| 803 | if (fpclassify (ld) != FP_INFINITE) | |
| 804 | { | |
| 805 | printf ("fpclassify (-LDBL_MAX-epsilon) failed: %d\n", | |
| 806 | fpclassify (ld)); | |
| 807 | result = 1; | |
| 808 | } | |
| e3bb40e6 UD |
809 | |
| 810 | v1.d = ld = 0.0625; | |
| 811 | ld = nextafterl (ld, 0.0); | |
| 812 | v2.d = ld = nextafterl (ld, 1.0); | |
| 813 | ||
| 814 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 815 | { | |
| 816 | printf ("0.0625L down: mantissa0 differs: %8x vs %8x\n", | |
| 817 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 818 | result = 1; | |
| 819 | } | |
| 820 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 821 | { | |
| 822 | printf ("0.0625L down: mantissa1 differs: %8x vs %8x\n", | |
| 823 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 824 | result = 1; | |
| 825 | } | |
| 826 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 827 | { | |
| 828 | printf ("0.0625L down: exponent differs: %4x vs %4x\n", | |
| 829 | v1.ieee.exponent, v2.ieee.exponent); | |
| 830 | result = 1; | |
| 831 | } | |
| 832 | if (v1.ieee.negative != v2.ieee.negative) | |
| 833 | { | |
| 834 | printf ("0.0625L down: negative differs: %d vs %d\n", | |
| 835 | v1.ieee.negative, v2.ieee.negative); | |
| 836 | result = 1; | |
| 837 | } | |
| 838 | ||
| 839 | v1.d = ld = 0.0625; | |
| 840 | ld = nextafterl (ld, 1.0); | |
| 841 | v2.d = ld = nextafterl (ld, 0.0); | |
| 842 | ||
| 843 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 844 | { | |
| 845 | printf ("0.0625L up: mantissa0 differs: %8x vs %8x\n", | |
| 846 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 847 | result = 1; | |
| 848 | } | |
| 849 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 850 | { | |
| 851 | printf ("0.0625L up: mantissa1 differs: %8x vs %8x\n", | |
| 852 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 853 | result = 1; | |
| 854 | } | |
| 855 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 856 | { | |
| 857 | printf ("0.0625L up: exponent differs: %4x vs %4x\n", | |
| 858 | v1.ieee.exponent, v2.ieee.exponent); | |
| 859 | result = 1; | |
| 860 | } | |
| 861 | if (v1.ieee.negative != v2.ieee.negative) | |
| 862 | { | |
| 863 | printf ("0.0625L up: negative differs: %d vs %d\n", | |
| 864 | v1.ieee.negative, v2.ieee.negative); | |
| 865 | result = 1; | |
| 866 | } | |
| 867 | ||
| 868 | v1.d = ld = -0.0625; | |
| 869 | ld = nextafterl (ld, 0.0); | |
| 870 | v2.d = ld = nextafterl (ld, -1.0); | |
| 871 | ||
| 872 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 873 | { | |
| 874 | printf ("-0.0625L up: mantissa0 differs: %8x vs %8x\n", | |
| 875 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 876 | result = 1; | |
| 877 | } | |
| 878 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 879 | { | |
| 880 | printf ("-0.0625L up: mantissa1 differs: %8x vs %8x\n", | |
| 881 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 882 | result = 1; | |
| 883 | } | |
| 884 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 885 | { | |
| 886 | printf ("-0.0625L up: exponent differs: %4x vs %4x\n", | |
| 887 | v1.ieee.exponent, v2.ieee.exponent); | |
| 888 | result = 1; | |
| 889 | } | |
| 890 | if (v1.ieee.negative != v2.ieee.negative) | |
| 891 | { | |
| 892 | printf ("-0.0625L up: negative differs: %d vs %d\n", | |
| 893 | v1.ieee.negative, v2.ieee.negative); | |
| 894 | result = 1; | |
| 895 | } | |
| 896 | ||
| 897 | v1.d = ld = -0.0625; | |
| 898 | ld = nextafterl (ld, -1.0); | |
| 899 | v2.d = ld = nextafterl (ld, 0.0); | |
| 900 | ||
| 901 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 902 | { | |
| 903 | printf ("-0.0625L down: mantissa0 differs: %8x vs %8x\n", | |
| 904 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 905 | result = 1; | |
| 906 | } | |
| 907 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 908 | { | |
| 909 | printf ("-0.0625L down: mantissa1 differs: %8x vs %8x\n", | |
| 910 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 911 | result = 1; | |
| 912 | } | |
| 913 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 914 | { | |
| 915 | printf ("-0.0625L down: exponent differs: %4x vs %4x\n", | |
| 916 | v1.ieee.exponent, v2.ieee.exponent); | |
| 917 | result = 1; | |
| 918 | } | |
| 919 | if (v1.ieee.negative != v2.ieee.negative) | |
| 920 | { | |
| 921 | printf ("-0.0625L down: negative differs: %d vs %d\n", | |
| 922 | v1.ieee.negative, v2.ieee.negative); | |
| 923 | result = 1; | |
| 924 | } | |
| 925 | ||
| 926 | v1.d = ld = 0.0; | |
| 927 | ld = nextafterl (ld, 1.0); | |
| 928 | v2.d = nextafterl (ld, -1.0); | |
| 929 | ||
| 930 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 931 | { | |
| 932 | printf ("0.0L up: mantissa0 differs: %8x vs %8x\n", | |
| 933 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 934 | result = 1; | |
| 935 | } | |
| 936 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 937 | { | |
| 938 | printf ("0.0L up: mantissa1 differs: %8x vs %8x\n", | |
| 939 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 940 | result = 1; | |
| 941 | } | |
| 942 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 943 | { | |
| 944 | printf ("0.0L up: exponent differs: %4x vs %4x\n", | |
| 945 | v1.ieee.exponent, v2.ieee.exponent); | |
| 946 | result = 1; | |
| 947 | } | |
| 948 | if (0 != v2.ieee.negative) | |
| 949 | { | |
| 950 | printf ("0.0L up: negative differs: 0 vs %d\n", | |
| 951 | v2.ieee.negative); | |
| 952 | result = 1; | |
| 953 | } | |
| 954 | ||
| 955 | v1.d = ld = 0.0; | |
| 956 | ld = nextafterl (ld, -1.0); | |
| 957 | v2.d = nextafterl (ld, 1.0); | |
| 958 | ||
| 959 | if (v1.ieee.mantissa0 != v2.ieee.mantissa0) | |
| 960 | { | |
| 961 | printf ("0.0L down: mantissa0 differs: %8x vs %8x\n", | |
| 962 | v1.ieee.mantissa0, v2.ieee.mantissa0); | |
| 963 | result = 1; | |
| 964 | } | |
| 965 | if (v1.ieee.mantissa1 != v2.ieee.mantissa1) | |
| 966 | { | |
| 967 | printf ("0.0L down: mantissa1 differs: %8x vs %8x\n", | |
| 968 | v1.ieee.mantissa1, v2.ieee.mantissa1); | |
| 969 | result = 1; | |
| 970 | } | |
| 971 | if (v1.ieee.exponent != v2.ieee.exponent) | |
| 972 | { | |
| 973 | printf ("0.0L down: exponent differs: %4x vs %4x\n", | |
| 974 | v1.ieee.exponent, v2.ieee.exponent); | |
| 975 | result = 1; | |
| 976 | } | |
| 977 | if (1 != v2.ieee.negative) | |
| 978 | { | |
| 979 | printf ("0.0L down: negative differs: 1 vs %d\n", | |
| 980 | v2.ieee.negative); | |
| 981 | result = 1; | |
| 982 | } | |
| cc46d0cf | 983 | } |
| 0df757b1 UD |
984 | #endif |
| 985 | ||
| 986 | if (! isnormal (FLT_MIN)) | |
| 987 | { | |
| 988 | puts ("isnormal (FLT_MIN) failed"); | |
| 989 | result = 1; | |
| 990 | } | |
| 991 | if (! isnormal (DBL_MIN)) | |
| 992 | { | |
| 993 | puts ("isnormal (DBL_MIN) failed"); | |
| 994 | result = 1; | |
| 995 | } | |
| 996 | #ifndef NO_LONG_DOUBLE | |
| 997 | if (! isnormal (LDBL_MIN)) | |
| 998 | { | |
| 999 | puts ("isnormal (LDBL_MIN) failed"); | |
| 1000 | result = 1; | |
| 1001 | } | |
| 1002 | #endif | |
| 1003 | ||
| fd8f4d46 UD |
1004 | #ifdef __i386__ |
| 1005 | /* This is a test for the strange long doubles in x86 FPUs. */ | |
| 1006 | { | |
| 1007 | union | |
| 1008 | { | |
| 1009 | char b[10]; | |
| 1010 | long double d; | |
| 1011 | } u = | |
| 1012 | { .b = { 0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0 } }; | |
| 1013 | ||
| 1014 | if (fpclassify (u.d) != FP_NORMAL) | |
| 1015 | { | |
| 1016 | printf ("fpclassify (0x00008000000000000000) failed: %d (%Lg)\n", | |
| 1017 | fpclassify (u.d), u.d); | |
| 1018 | result = 1; | |
| 1019 | } | |
| 1020 | } | |
| 6d0c4914 UD |
1021 | |
| 1022 | /* Special NaNs in x86 long double. Test for scalbl. */ | |
| 1023 | { | |
| 1024 | union | |
| 1025 | { | |
| 1026 | char b[10]; | |
| 1027 | long double d; | |
| 1028 | } u = | |
| 1029 | { .b = { 0, 1, 0, 0, 0, 0, 0, 0xc0, 0xff, 0x7f } }; | |
| 1030 | long double r; | |
| 1031 | ||
| 1032 | r = scalbl (u.d, 0.0); | |
| 1033 | if (!isnan (r)) | |
| 1034 | { | |
| 1035 | puts ("scalbl(NaN, 0) does not return NaN"); | |
| 1036 | result = 1; | |
| 1037 | } | |
| 1038 | else if (memcmp (&r, &u.d, sizeof (double)) != 0) | |
| 1039 | { | |
| 1040 | puts ("scalbl(NaN, 0) does not return the same NaN"); | |
| 1041 | result = 1; | |
| 1042 | } | |
| 1043 | } | |
| fd8f4d46 UD |
1044 | #endif |
| 1045 | ||
| b210e4cc UD |
1046 | #ifndef NO_LONG_DOUBLE |
| 1047 | { | |
| 1048 | long double r; | |
| 1049 | ||
| 1050 | feclearexcept (FE_ALL_EXCEPT); | |
| 1051 | r = scalbl (LDBL_MIN, 2147483647); | |
| 1052 | if (! isinf (r)) | |
| 1053 | { | |
| 1054 | puts ("scalbl (LDBL_MIN, 2147483647) does not return Inf"); | |
| 1055 | result = 1; | |
| 1056 | } | |
| 1057 | else if (signbit (r) != 0) | |
| 1058 | { | |
| 1059 | puts ("scalbl (LDBL_MIN, 2147483647) returns -Inf"); | |
| 1060 | result = 1; | |
| 1061 | } | |
| 1062 | else if (fetestexcept (FE_UNDERFLOW)) | |
| 1063 | { | |
| 1064 | puts ("scalbl(NaN, 0) raises underflow exception"); | |
| 1065 | result = 1; | |
| 1066 | } | |
| 1067 | ||
| 1068 | feclearexcept (FE_ALL_EXCEPT); | |
| 1069 | r = scalbl (LDBL_MAX, -2147483647); | |
| 1070 | if (r != 0.0) | |
| 1071 | { | |
| 1072 | puts ("scalbl (LDBL_MAX, -2147483647) does not return 0"); | |
| 1073 | result = 1; | |
| 1074 | } | |
| 1075 | else if (signbit (r) != 0) | |
| 1076 | { | |
| 1077 | puts ("scalbl (LDBL_MAX, -2147483647) returns -Inf"); | |
| 1078 | result = 1; | |
| 1079 | } | |
| 1080 | else if (fetestexcept (FE_OVERFLOW)) | |
| 1081 | { | |
| 1082 | puts ("scalbl(NaN, 0) raises overflow exception"); | |
| 1083 | result = 1; | |
| 1084 | } | |
| 1085 | } | |
| 1086 | #endif | |
| 1087 | ||
| 9861985f UD |
1088 | return result; |
| 1089 | } |