lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Test for fenv inline implementations. |
| 2 | Copyright (C) 2015 Free Software Foundation, Inc. |
| 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 Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _GNU_SOURCE |
| 20 | # define _GNU_SOURCE |
| 21 | #endif |
| 22 | |
| 23 | /* To make sure the fenv inline function are used. */ |
| 24 | #undef __NO_MATH_INLINES |
| 25 | |
| 26 | #include <fenv.h> |
| 27 | #include <stdio.h> |
| 28 | #include <math-tests.h> |
| 29 | |
| 30 | /* |
| 31 | Since not all architectures might define all exceptions, we define |
| 32 | a private set and map accordingly. |
| 33 | */ |
| 34 | #define NO_EXC 0 |
| 35 | #define INEXACT_EXC 0x1 |
| 36 | #define DIVBYZERO_EXC 0x2 |
| 37 | #define UNDERFLOW_EXC 0x04 |
| 38 | #define OVERFLOW_EXC 0x08 |
| 39 | #define INVALID_EXC 0x10 |
| 40 | #define ALL_EXC \ |
| 41 | (INEXACT_EXC | DIVBYZERO_EXC | UNDERFLOW_EXC | OVERFLOW_EXC | \ |
| 42 | INVALID_EXC) |
| 43 | static int count_errors; |
| 44 | |
| 45 | #if FE_ALL_EXCEPT |
| 46 | static void |
| 47 | test_single_exception_fp_int (int exception, |
| 48 | int exc_flag, |
| 49 | int fe_flag, |
| 50 | const char *flag_name) |
| 51 | { |
| 52 | if (exception & exc_flag) |
| 53 | { |
| 54 | if (fetestexcept (fe_flag)) |
| 55 | printf (" Pass: Exception \"%s\" is set\n", flag_name); |
| 56 | else |
| 57 | { |
| 58 | printf (" Fail: Exception \"%s\" is not set\n", flag_name); |
| 59 | ++count_errors; |
| 60 | } |
| 61 | } |
| 62 | else |
| 63 | { |
| 64 | if (fetestexcept (fe_flag)) |
| 65 | { |
| 66 | printf (" Fail: Exception \"%s\" is set\n", flag_name); |
| 67 | ++count_errors; |
| 68 | } |
| 69 | else |
| 70 | printf (" Pass: Exception \"%s\" is not set\n", flag_name); |
| 71 | } |
| 72 | } |
| 73 | /* Test whether a given exception was raised. */ |
| 74 | static void |
| 75 | test_single_exception_fp_double (int exception, |
| 76 | int exc_flag, |
| 77 | double fe_flag, |
| 78 | const char *flag_name) |
| 79 | { |
| 80 | if (exception & exc_flag) |
| 81 | { |
| 82 | if (fetestexcept (fe_flag)) |
| 83 | printf (" Pass: Exception \"%s\" is set\n", flag_name); |
| 84 | else |
| 85 | { |
| 86 | printf (" Fail: Exception \"%s\" is not set\n", flag_name); |
| 87 | ++count_errors; |
| 88 | } |
| 89 | } |
| 90 | else |
| 91 | { |
| 92 | if (fetestexcept (fe_flag)) |
| 93 | { |
| 94 | printf (" Fail: Exception \"%s\" is set\n", flag_name); |
| 95 | ++count_errors; |
| 96 | } |
| 97 | else |
| 98 | printf (" Pass: Exception \"%s\" is not set\n", flag_name); |
| 99 | } |
| 100 | } |
| 101 | #endif |
| 102 | |
| 103 | static void |
| 104 | test_exceptions (const char *test_name, int exception) |
| 105 | { |
| 106 | printf ("Test: %s\n", test_name); |
| 107 | #ifdef FE_DIVBYZERO |
| 108 | test_single_exception_fp_double (exception, DIVBYZERO_EXC, FE_DIVBYZERO, |
| 109 | "DIVBYZERO"); |
| 110 | #endif |
| 111 | #ifdef FE_INVALID |
| 112 | test_single_exception_fp_double (exception, INVALID_EXC, FE_INVALID, |
| 113 | "INVALID"); |
| 114 | #endif |
| 115 | #ifdef FE_INEXACT |
| 116 | test_single_exception_fp_double (exception, INEXACT_EXC, FE_INEXACT, |
| 117 | "INEXACT"); |
| 118 | #endif |
| 119 | #ifdef FE_UNDERFLOW |
| 120 | test_single_exception_fp_double (exception, UNDERFLOW_EXC, FE_UNDERFLOW, |
| 121 | "UNDERFLOW"); |
| 122 | #endif |
| 123 | #ifdef FE_OVERFLOW |
| 124 | test_single_exception_fp_double (exception, OVERFLOW_EXC, FE_OVERFLOW, |
| 125 | "OVERFLOW"); |
| 126 | #endif |
| 127 | } |
| 128 | |
| 129 | static void |
| 130 | test_exceptionflag (void) |
| 131 | { |
| 132 | printf ("Test: fegetexceptionflag (FE_ALL_EXCEPT)\n"); |
| 133 | #if FE_ALL_EXCEPT |
| 134 | fexcept_t excepts; |
| 135 | |
| 136 | feclearexcept (FE_ALL_EXCEPT); |
| 137 | |
| 138 | feraiseexcept (FE_INVALID); |
| 139 | fegetexceptflag (&excepts, FE_ALL_EXCEPT); |
| 140 | |
| 141 | feclearexcept (FE_ALL_EXCEPT); |
| 142 | feraiseexcept (FE_OVERFLOW | FE_INEXACT); |
| 143 | |
| 144 | fesetexceptflag (&excepts, FE_ALL_EXCEPT); |
| 145 | |
| 146 | test_single_exception_fp_int (INVALID_EXC, INVALID_EXC, FE_INVALID, |
| 147 | "INVALID (int)"); |
| 148 | test_single_exception_fp_int (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW, |
| 149 | "OVERFLOW (int)"); |
| 150 | test_single_exception_fp_int (INVALID_EXC, INEXACT_EXC, FE_INEXACT, |
| 151 | "INEXACT (int)"); |
| 152 | |
| 153 | /* Same test, but using double as argument */ |
| 154 | feclearexcept (FE_ALL_EXCEPT); |
| 155 | |
| 156 | feraiseexcept (FE_INVALID); |
| 157 | fegetexceptflag (&excepts, (double)FE_ALL_EXCEPT); |
| 158 | |
| 159 | feclearexcept (FE_ALL_EXCEPT); |
| 160 | feraiseexcept (FE_OVERFLOW | FE_INEXACT); |
| 161 | |
| 162 | fesetexceptflag (&excepts, (double)FE_ALL_EXCEPT); |
| 163 | |
| 164 | test_single_exception_fp_double (INVALID_EXC, INVALID_EXC, FE_INVALID, |
| 165 | "INVALID (double)"); |
| 166 | test_single_exception_fp_double (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW, |
| 167 | "OVERFLOW (double)"); |
| 168 | test_single_exception_fp_double (INVALID_EXC, INEXACT_EXC, FE_INEXACT, |
| 169 | "INEXACT (double)"); |
| 170 | #endif |
| 171 | } |
| 172 | |
| 173 | static void |
| 174 | test_fesetround (void) |
| 175 | { |
| 176 | #if defined FE_TONEAREST && defined FE_TOWARDZERO |
| 177 | int res1; |
| 178 | int res2; |
| 179 | |
| 180 | printf ("Tests for fesetround\n"); |
| 181 | |
| 182 | /* The fesetround should not itself cause the test to fail, however it |
| 183 | should either succeed for both 'int' and 'double' argument, or fail |
| 184 | for both. */ |
| 185 | res1 = fesetround ((int) FE_TOWARDZERO); |
| 186 | res2 = fesetround ((double) FE_TOWARDZERO); |
| 187 | if (res1 != res2) |
| 188 | { |
| 189 | printf ("fesetround (FE_TOWARDZERO) failed: %d, %d\n", res1, res2); |
| 190 | ++count_errors; |
| 191 | } |
| 192 | |
| 193 | res1 = fesetround ((int) FE_TONEAREST); |
| 194 | res2 = fesetround ((double) FE_TONEAREST); |
| 195 | if (res1 != res2) |
| 196 | { |
| 197 | printf ("fesetround (FE_TONEAREST) failed: %d, %d\n", res1, res2); |
| 198 | ++count_errors; |
| 199 | } |
| 200 | #endif |
| 201 | } |
| 202 | |
| 203 | #if FE_ALL_EXCEPT |
| 204 | /* Tests for feenableexcept/fedisableexcept. */ |
| 205 | static void |
| 206 | feenable_test (const char *flag_name, fexcept_t fe_exc) |
| 207 | { |
| 208 | int fe_exci = fe_exc; |
| 209 | double fe_excd = fe_exc; |
| 210 | int excepts; |
| 211 | |
| 212 | /* First disable all exceptions. */ |
| 213 | if (fedisableexcept (FE_ALL_EXCEPT) == -1) |
| 214 | { |
| 215 | printf ("Test: fedisableexcept (FE_ALL_EXCEPT) failed\n"); |
| 216 | ++count_errors; |
| 217 | /* If this fails, the other tests don't make sense. */ |
| 218 | return; |
| 219 | } |
| 220 | |
| 221 | /* Test for inline macros using integer argument. */ |
| 222 | excepts = feenableexcept (fe_exci); |
| 223 | if (!EXCEPTION_ENABLE_SUPPORTED (fe_exci) && excepts == -1) |
| 224 | { |
| 225 | printf ("Test: not testing feenableexcept, it isn't implemented.\n"); |
| 226 | return; |
| 227 | } |
| 228 | if (excepts == -1) |
| 229 | { |
| 230 | printf ("Test: feenableexcept (%s) failed\n", flag_name); |
| 231 | ++count_errors; |
| 232 | return; |
| 233 | } |
| 234 | if (excepts != 0) |
| 235 | { |
| 236 | printf ("Test: feenableexcept (%s) failed, return should be 0, is %x\n", |
| 237 | flag_name, excepts); |
| 238 | ++count_errors; |
| 239 | } |
| 240 | |
| 241 | /* And now disable the exception again. */ |
| 242 | excepts = fedisableexcept (fe_exc); |
| 243 | if (excepts == -1) |
| 244 | { |
| 245 | printf ("Test: fedisableexcept (%s) failed\n", flag_name); |
| 246 | ++count_errors; |
| 247 | return; |
| 248 | } |
| 249 | if (excepts != fe_exc) |
| 250 | { |
| 251 | printf ("Test: fedisableexcept (%s) failed, return should be 0x%x, is 0x%x\n", |
| 252 | flag_name, (unsigned int)fe_exc, excepts); |
| 253 | ++count_errors; |
| 254 | } |
| 255 | |
| 256 | /* Test for inline macros using double argument. */ |
| 257 | excepts = feenableexcept (fe_excd); |
| 258 | if (!EXCEPTION_ENABLE_SUPPORTED (fe_excd) && excepts == -1) |
| 259 | { |
| 260 | printf ("Test: not testing feenableexcept, it isn't implemented.\n"); |
| 261 | return; |
| 262 | } |
| 263 | if (excepts == -1) |
| 264 | { |
| 265 | printf ("Test: feenableexcept (%s) failed\n", flag_name); |
| 266 | ++count_errors; |
| 267 | return; |
| 268 | } |
| 269 | if (excepts != 0) |
| 270 | { |
| 271 | printf ("Test: feenableexcept (%s) failed, return should be 0, is %x\n", |
| 272 | flag_name, excepts); |
| 273 | ++count_errors; |
| 274 | } |
| 275 | |
| 276 | /* And now disable the exception again. */ |
| 277 | excepts = fedisableexcept (fe_exc); |
| 278 | if (excepts == -1) |
| 279 | { |
| 280 | printf ("Test: fedisableexcept (%s) failed\n", flag_name); |
| 281 | ++count_errors; |
| 282 | return; |
| 283 | } |
| 284 | if (excepts != fe_exc) |
| 285 | { |
| 286 | printf ("Test: fedisableexcept (%s) failed, return should be 0x%x, is 0x%x\n", |
| 287 | flag_name, (unsigned int)fe_exc, excepts); |
| 288 | ++count_errors; |
| 289 | } |
| 290 | } |
| 291 | #endif |
| 292 | |
| 293 | static void |
| 294 | test_feenabledisable (void) |
| 295 | { |
| 296 | printf ("Tests for feenableexcepts/fedisableexcept\n"); |
| 297 | |
| 298 | /* We might have some exceptions still set. */ |
| 299 | feclearexcept (FE_ALL_EXCEPT); |
| 300 | |
| 301 | #ifdef FE_DIVBYZERO |
| 302 | feenable_test ("FE_DIVBYZERO", FE_DIVBYZERO); |
| 303 | #endif |
| 304 | #ifdef FE_INVALID |
| 305 | feenable_test ("FE_INVALID", FE_INVALID); |
| 306 | #endif |
| 307 | #ifdef FE_INEXACT |
| 308 | feenable_test ("FE_INEXACT", FE_INEXACT); |
| 309 | #endif |
| 310 | #ifdef FE_UNDERFLOW |
| 311 | feenable_test ("FE_UNDERFLOW", FE_UNDERFLOW); |
| 312 | #endif |
| 313 | #ifdef FE_OVERFLOW |
| 314 | feenable_test ("FE_OVERFLOW", FE_OVERFLOW); |
| 315 | #endif |
| 316 | fesetenv (FE_DFL_ENV); |
| 317 | } |
| 318 | |
| 319 | static int |
| 320 | do_test (void) |
| 321 | { |
| 322 | /* clear all exceptions and test if all are cleared */ |
| 323 | feclearexcept (FE_ALL_EXCEPT); |
| 324 | test_exceptions ("feclearexcept (FE_ALL_EXCEPT) clears all exceptions", |
| 325 | NO_EXC); |
| 326 | |
| 327 | /* raise all exceptions and test if all are raised */ |
| 328 | feraiseexcept (FE_ALL_EXCEPT); |
| 329 | test_exceptions ("feraiseexcept (FE_ALL_EXCEPT) raises all exceptions", |
| 330 | ALL_EXC); |
| 331 | |
| 332 | /* Same test, but using double as argument */ |
| 333 | feclearexcept ((double)FE_ALL_EXCEPT); |
| 334 | test_exceptions ("feclearexcept ((double)FE_ALL_EXCEPT) clears all exceptions", |
| 335 | NO_EXC); |
| 336 | |
| 337 | feraiseexcept ((double)FE_ALL_EXCEPT); |
| 338 | test_exceptions ("feraiseexcept ((double)FE_ALL_EXCEPT) raises all exceptions", |
| 339 | ALL_EXC); |
| 340 | |
| 341 | test_exceptionflag (); |
| 342 | |
| 343 | test_fesetround (); |
| 344 | |
| 345 | test_feenabledisable (); |
| 346 | |
| 347 | return count_errors; |
| 348 | } |
| 349 | |
| 350 | #define TEST_FUNCTION do_test () |
| 351 | #include "../test-skeleton.c" |