1 /* $OpenBSD: fenv_test.c,v 1.7 2021/12/13 18:04:28 deraadt Exp $ */
2 /*-
3 * Copyright (c) 2004 David Schultz <das@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include "macros.h"
29
30 /*
31 * Test the correctness and C99-compliance of various fenv.h features.
32 */
33
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <assert.h>
37 #include <err.h>
38 #include <fenv.h>
39 #include <float.h>
40 #ifndef __OpenBSD__
41 #include <libutil.h>
42 #endif
43 #include <math.h>
44 #include <signal.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <unistd.h>
48
49 #include "test-utils.h"
50
51 #define NEXCEPTS (sizeof(std_excepts) / sizeof(std_excepts[0]))
52
53 static const int std_excepts[] = {
54 FE_INVALID,
55 FE_DIVBYZERO,
56 FE_OVERFLOW,
57 FE_UNDERFLOW,
58 FE_INEXACT,
59 };
60
61 /* init_exceptsets() initializes this to the power set of std_excepts[] */
62 static int std_except_sets[1 << NEXCEPTS];
63
64 #pragma STDC FENV_ACCESS ON
65
66 /*
67 * Initialize std_except_sets[] to the power set of std_excepts[]
68 */
69 static __attribute__((constructor)) void
do_setup(void)70 do_setup(void)
71 {
72 unsigned i, j, sr;
73
74 /* Avoid double output after fork() */
75 setvbuf(stdout, NULL, _IONBF, 0);
76
77 for (i = 0; i < 1 << NEXCEPTS; i++) {
78 for (sr = i, j = 0; sr != 0; sr >>= 1, j++)
79 std_except_sets[i] |= std_excepts[j] & ((~sr & 1) - 1);
80 }
81 }
82
83 /*
84 * Raise a floating-point exception without relying on the standard
85 * library routines, which we are trying to test.
86 *
87 * XXX We can't raise an {over,under}flow without also raising an
88 * inexact exception.
89 */
90 static void
raiseexcept(int excepts)91 raiseexcept(int excepts)
92 {
93 volatile double d;
94
95 /*
96 * With a compiler that supports the FENV_ACCESS pragma
97 * properly, simple expressions like '0.0 / 0.0' should
98 * be sufficient to generate traps. Unfortunately, we
99 * need to bring a volatile variable into the equation
100 * to prevent incorrect optimizations.
101 */
102 if (excepts & FE_INVALID) {
103 d = 0.0;
104 d = 0.0 / d;
105 }
106 if (excepts & FE_DIVBYZERO) {
107 d = 0.0;
108 d = 1.0 / d;
109 }
110 if (excepts & FE_OVERFLOW) {
111 d = DBL_MAX;
112 d *= 2.0;
113 }
114 if (excepts & FE_UNDERFLOW) {
115 d = DBL_MIN;
116 d /= DBL_MAX;
117 }
118 if (excepts & FE_INEXACT) {
119 d = DBL_MIN;
120 d += 1.0;
121 }
122
123 /*
124 * On the x86 (and some other architectures?) the FPU and
125 * integer units are decoupled. We need to execute an FWAIT
126 * or a floating-point instruction to get synchronous exceptions.
127 */
128 d = 1.0;
129 d += 1.0;
130 }
131
132 /*
133 * Determine the current rounding mode without relying on the fenv
134 * routines. This function may raise an inexact exception.
135 */
136 static int
getround(void)137 getround(void)
138 {
139 volatile double d, e;
140
141 /*
142 * This test works just as well with 0.0 - 0.0, except on ia64
143 * where 0.0 - 0.0 gives the wrong sign when rounding downwards.
144 * For ia32 use a volatile double to force 64 bit rounding.
145 * Otherwise the i387 would use its internal 80 bit stack.
146 */
147 d = 1.0;
148 d -= 1.0;
149 if (copysign(1.0, d) < 0.0)
150 return (FE_DOWNWARD);
151
152 d = 1.0;
153 e = d + (DBL_EPSILON * 3.0 / 4.0);
154 if (e == 1.0)
155 return (FE_TOWARDZERO);
156 e = d + (DBL_EPSILON * 1.0 / 4.0);
157 if (e > 1.0)
158 return (FE_UPWARD);
159
160 return (FE_TONEAREST);
161 }
162
163 static void
trap_handler(int sig)164 trap_handler(int sig)
165 {
166
167 ATF_CHECK_EQ(SIGFPE, sig);
168 _exit(0);
169 }
170
171 /*
172 * This tests checks the default FP environment, so it must be first.
173 * The memcmp() test below may be too much to ask for, since there
174 * could be multiple machine-specific default environments.
175 */
176 ATF_TC_WITHOUT_HEAD(dfl_env);
ATF_TC_BODY(dfl_env,tc)177 ATF_TC_BODY(dfl_env, tc)
178 {
179 #ifndef NO_STRICT_DFL_ENV
180 fenv_t env;
181
182 fegetenv(&env);
183 /* Print the default environment for debugging purposes. */
184 hexdump(&env, sizeof(env), "current fenv ", HD_OMIT_CHARS);
185 hexdump(FE_DFL_ENV, sizeof(env), "default fenv ", HD_OMIT_CHARS);
186 CHECK_FP_EXCEPTIONS(0, FE_ALL_EXCEPT);
187 #ifdef __amd64__
188 /*
189 * Compare the fields that the AMD [1] and Intel [2] specs say will be
190 * set once fnstenv returns.
191 *
192 * Not all amd64 capable processors implement the fnstenv instruction
193 * by zero'ing out the env.__x87.__other field (example: AMD Opteron
194 * 6308). The AMD64/x64 specs aren't explicit on what the
195 * env.__x87.__other field will contain after fnstenv is executed, so
196 * the values in env.__x87.__other could be filled with arbitrary
197 * data depending on how the CPU implements fnstenv.
198 *
199 * 1. http://support.amd.com/TechDocs/26569_APM_v5.pdf
200 * 2. http://www.intel.com/Assets/en_US/PDF/manual/253666.pdf
201 */
202 ATF_CHECK(memcmp(&env.__mxcsr, &FE_DFL_ENV->__mxcsr,
203 sizeof(env.__mxcsr)) == 0);
204 ATF_CHECK(memcmp(&env.__x87.__control, &FE_DFL_ENV->__x87.__control,
205 sizeof(env.__x87.__control)) == 0);
206 ATF_CHECK(memcmp(&env.__x87.__status, &FE_DFL_ENV->__x87.__status,
207 sizeof(env.__x87.__status)) == 0);
208 ATF_CHECK(memcmp(&env.__x87.__tag, &FE_DFL_ENV->__x87.__tag,
209 sizeof(env.__x87.__tag)) == 0);
210 #else
211 ATF_CHECK_EQ(0, memcmp(&env, FE_DFL_ENV, sizeof(env)));
212 #endif
213
214 #endif
215 CHECK_FP_EXCEPTIONS(0, FE_ALL_EXCEPT);
216 }
217
218 /*
219 * Test fetestexcept() and feclearexcept().
220 */
221 ATF_TC_WITHOUT_HEAD(fetestclearexcept);
ATF_TC_BODY(fetestclearexcept,tc)222 ATF_TC_BODY(fetestclearexcept, tc)
223 {
224 int excepts, i;
225
226 for (i = 0; i < 1 << NEXCEPTS; i++)
227 ATF_CHECK_EQ(0, fetestexcept(std_except_sets[i]));
228 for (i = 0; i < 1 << NEXCEPTS; i++) {
229 excepts = std_except_sets[i];
230
231 /* FE_ALL_EXCEPT might be special-cased, as on i386. */
232 raiseexcept(excepts);
233 ATF_CHECK_EQ(excepts, fetestexcept(excepts));
234 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
235 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
236
237 raiseexcept(excepts);
238 ATF_CHECK_EQ(excepts, fetestexcept(excepts));
239 if ((excepts & (FE_UNDERFLOW | FE_OVERFLOW)) != 0) {
240 excepts |= FE_INEXACT;
241 ATF_CHECK_EQ(excepts, (fetestexcept(ALL_STD_EXCEPT) | FE_INEXACT));
242 } else {
243 ATF_CHECK_EQ(excepts, fetestexcept(ALL_STD_EXCEPT));
244 }
245 ATF_CHECK_EQ(0, feclearexcept(excepts));
246 ATF_CHECK_EQ(0, fetestexcept(ALL_STD_EXCEPT));
247 }
248 }
249
250 /*
251 * Test fegetexceptflag() and fesetexceptflag().
252 *
253 * Prerequisites: fetestexcept(), feclearexcept()
254 */
255 ATF_TC_WITHOUT_HEAD(fegsetexceptflag);
ATF_TC_BODY(fegsetexceptflag,tc)256 ATF_TC_BODY(fegsetexceptflag, tc)
257 {
258 fexcept_t flag;
259 int excepts, i;
260
261 CHECK_FP_EXCEPTIONS(0, FE_ALL_EXCEPT);
262 for (i = 0; i < 1 << NEXCEPTS; i++) {
263 excepts = std_except_sets[i];
264
265 ATF_CHECK_EQ(0, fegetexceptflag(&flag, excepts));
266 raiseexcept(ALL_STD_EXCEPT);
267 ATF_CHECK_EQ(0, fesetexceptflag(&flag, excepts));
268 ATF_CHECK_EQ((ALL_STD_EXCEPT ^ excepts), fetestexcept(ALL_STD_EXCEPT));
269
270 ATF_CHECK_EQ(0, fegetexceptflag(&flag, FE_ALL_EXCEPT));
271 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
272 ATF_CHECK_EQ(0, fesetexceptflag(&flag, excepts));
273 ATF_CHECK_EQ(0, fetestexcept(ALL_STD_EXCEPT));
274 ATF_CHECK_EQ(0, fesetexceptflag(&flag, ALL_STD_EXCEPT ^ excepts));
275 ATF_CHECK_EQ((ALL_STD_EXCEPT ^ excepts), fetestexcept(ALL_STD_EXCEPT));
276
277 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
278 }
279 }
280
281 /*
282 * Test feraiseexcept().
283 *
284 * Prerequisites: fetestexcept(), feclearexcept()
285 */
286 ATF_TC_WITHOUT_HEAD(feraiseexcept);
ATF_TC_BODY(feraiseexcept,tc)287 ATF_TC_BODY(feraiseexcept, tc)
288 {
289 int excepts, i;
290
291 for (i = 0; i < 1 << NEXCEPTS; i++) {
292 excepts = std_except_sets[i];
293
294 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
295 ATF_CHECK_EQ(0, feraiseexcept(excepts));
296 if ((excepts & (FE_UNDERFLOW | FE_OVERFLOW)) != 0) {
297 excepts |= FE_INEXACT;
298 ATF_CHECK_EQ(excepts, (fetestexcept(ALL_STD_EXCEPT) | FE_INEXACT));
299 } else {
300 ATF_CHECK_EQ(excepts, fetestexcept(ALL_STD_EXCEPT));
301 }
302 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
303 }
304 ATF_CHECK_EQ(0, feraiseexcept(FE_INVALID | FE_DIVBYZERO));
305 ATF_CHECK_EQ((FE_INVALID | FE_DIVBYZERO), fetestexcept(ALL_STD_EXCEPT));
306 ATF_CHECK_EQ(0, feraiseexcept(FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT));
307 ATF_CHECK_EQ(ALL_STD_EXCEPT, fetestexcept(ALL_STD_EXCEPT));
308 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
309 }
310
311 /*
312 * Test fegetround() and fesetround().
313 */
314 ATF_TC_WITHOUT_HEAD(fegsetround);
ATF_TC_BODY(fegsetround,tc)315 ATF_TC_BODY(fegsetround, tc)
316 {
317
318 ATF_CHECK_EQ(FE_TONEAREST, fegetround());
319 ATF_CHECK_EQ(FE_TONEAREST, getround());
320 ATF_CHECK_EQ(1, FLT_ROUNDS);
321
322 ATF_CHECK_EQ(0, fesetround(FE_DOWNWARD));
323 ATF_CHECK_EQ(FE_DOWNWARD, fegetround());
324 ATF_CHECK_EQ(FE_DOWNWARD, getround());
325 ATF_CHECK_EQ(3, FLT_ROUNDS);
326
327 ATF_CHECK_EQ(0, fesetround(FE_UPWARD));
328 ATF_CHECK_EQ(FE_UPWARD, getround());
329 ATF_CHECK_EQ(FE_UPWARD, fegetround());
330 ATF_CHECK_EQ(2, FLT_ROUNDS);
331
332 ATF_CHECK_EQ(0, fesetround(FE_TOWARDZERO));
333 ATF_CHECK_EQ(FE_TOWARDZERO, getround());
334 ATF_CHECK_EQ(FE_TOWARDZERO, fegetround());
335 ATF_CHECK_EQ(0, FLT_ROUNDS);
336
337 ATF_CHECK_EQ(0, fesetround(FE_TONEAREST));
338 ATF_CHECK_EQ(FE_TONEAREST, getround());
339 ATF_CHECK_EQ(1, FLT_ROUNDS);
340
341 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));
342 }
343
344 /*
345 * Test fegetenv() and fesetenv().
346 *
347 * Prerequisites: fetestexcept(), feclearexcept(), fegetround(), fesetround()
348 */
349 ATF_TC_WITHOUT_HEAD(fegsetenv);
ATF_TC_BODY(fegsetenv,tc)350 ATF_TC_BODY(fegsetenv, tc)
351 {
352 fenv_t env1, env2;
353 int excepts, i;
354
355 for (i = 0; i < 1 << NEXCEPTS; i++) {
356 excepts = std_except_sets[i];
357
358 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
359 ATF_CHECK_EQ(FE_TONEAREST, fegetround());
360 ATF_CHECK_EQ(0, fegetenv(&env1));
361
362 /*
363 * fe[gs]etenv() should be able to save and restore
364 * exception flags without the spurious inexact
365 * exceptions that afflict raiseexcept().
366 */
367 raiseexcept(excepts);
368 if ((excepts & (FE_UNDERFLOW | FE_OVERFLOW)) != 0 &&
369 (excepts & FE_INEXACT) == 0)
370 ATF_CHECK_EQ(0, feclearexcept(FE_INEXACT));
371
372 fesetround(FE_DOWNWARD);
373 ATF_CHECK_EQ(0, fegetenv(&env2));
374 ATF_CHECK_EQ(0, fesetenv(&env1));
375 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
376 ATF_CHECK_EQ(FE_TONEAREST, fegetround());
377
378 ATF_CHECK_EQ(0, fesetenv(&env2));
379
380 /*
381 * Some platforms like powerpc may set extra exception bits. Since
382 * only standard exceptions are tested, mask against ALL_STD_EXCEPT
383 */
384 ATF_CHECK_EQ(excepts, (fetestexcept(FE_ALL_EXCEPT) & ALL_STD_EXCEPT));
385
386 ATF_CHECK_EQ(FE_DOWNWARD, fegetround());
387 ATF_CHECK_EQ(0, fesetenv(&env1));
388 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
389 ATF_CHECK_EQ(FE_TONEAREST, fegetround());
390 }
391 }
392
393 /*
394 * Test fegetexcept(), fedisableexcept(), and feenableexcept().
395 *
396 * Prerequisites: fetestexcept(), feraiseexcept()
397 */
398 ATF_TC_WITHOUT_HEAD(masking);
ATF_TC_BODY(masking,tc)399 ATF_TC_BODY(masking, tc)
400 {
401 #if !defined(__arm__) && !defined(__aarch64__) && !defined(__riscv)
402 struct sigaction act;
403 int except, pass, raise, status;
404 unsigned i;
405
406 ATF_REQUIRE_EQ(0, (fegetexcept() & ALL_STD_EXCEPT));
407
408 /*
409 * Some CPUs, e.g. AArch64 QEMU does not support trapping on FP
410 * exceptions. In that case the trap enable bits are all RAZ/WI, so
411 * writing to those bits will be ignored and the the next read will
412 * return all zeroes for those bits. Skip the test if no floating
413 * point exceptions are supported and mark it XFAIL if some are missing.
414 */
415 ATF_REQUIRE_EQ(0, (feenableexcept(FE_ALL_EXCEPT)));
416 except = fegetexcept();
417 if (except == 0) {
418 atf_tc_skip("CPU does not support trapping on floating point "
419 "exceptions.");
420 } else if ((except & ALL_STD_EXCEPT) != ALL_STD_EXCEPT) {
421 atf_tc_expect_fail("Not all floating point exceptions can be "
422 "set to trap: %#x vs %#x", except, ALL_STD_EXCEPT);
423 }
424 fedisableexcept(FE_ALL_EXCEPT);
425
426
427 ATF_CHECK_EQ(0, (feenableexcept(FE_INVALID|FE_OVERFLOW) & ALL_STD_EXCEPT));
428 ATF_CHECK_EQ((FE_INVALID | FE_OVERFLOW), (feenableexcept(FE_UNDERFLOW) & ALL_STD_EXCEPT));
429 ATF_CHECK_EQ((FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW), (fedisableexcept(FE_OVERFLOW) & ALL_STD_EXCEPT));
430 ATF_CHECK_EQ((FE_INVALID | FE_UNDERFLOW), (fegetexcept() & ALL_STD_EXCEPT));
431 ATF_CHECK_EQ((FE_INVALID | FE_UNDERFLOW), (fedisableexcept(FE_ALL_EXCEPT) & ALL_STD_EXCEPT));
432 ATF_CHECK_EQ(0, (fegetexcept() & ALL_STD_EXCEPT));
433
434 sigemptyset(&act.sa_mask);
435 act.sa_flags = 0;
436 act.sa_handler = trap_handler;
437 for (pass = 0; pass < 2; pass++) {
438 for (i = 0; i < NEXCEPTS; i++) {
439 except = std_excepts[i];
440 /* over/underflow may also raise inexact */
441 if (except == FE_INEXACT)
442 raise = FE_DIVBYZERO | FE_INVALID;
443 else
444 raise = ALL_STD_EXCEPT ^ except;
445
446 /*
447 * We need to fork a child process because
448 * there isn't a portable way to recover from
449 * a floating-point exception.
450 */
451 switch(fork()) {
452 case 0: /* child */
453 ATF_CHECK_EQ(0, (fegetexcept() & ALL_STD_EXCEPT));
454 ATF_REQUIRE_EQ(0, (feenableexcept(except) & ALL_STD_EXCEPT));
455 ATF_CHECK_EQ(except, fegetexcept());
456 raiseexcept(raise);
457 ATF_CHECK_EQ(0, feraiseexcept(raise));
458 ATF_CHECK_EQ(raise, fetestexcept(ALL_STD_EXCEPT));
459
460 ATF_CHECK_EQ(0, sigaction(SIGFPE, &act, NULL));
461 switch (pass) {
462 case 0:
463 raiseexcept(except);
464 case 1:
465 feraiseexcept(except);
466 default:
467 ATF_REQUIRE(0);
468 }
469 ATF_REQUIRE(0);
470 default: /* parent */
471 ATF_REQUIRE(wait(&status) > 0);
472 /*
473 * Avoid assert() here so that it's possible
474 * to examine a failed child's core dump.
475 */
476 if (!WIFEXITED(status))
477 errx(1, "child aborted\n");
478 ATF_CHECK_EQ(0, WEXITSTATUS(status));
479 break;
480 case -1: /* error */
481 ATF_REQUIRE(0);
482 }
483 }
484 }
485 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
486 #endif
487 }
488
489 /*
490 * Test feholdexcept() and feupdateenv().
491 *
492 * Prerequisites: fetestexcept(), fegetround(), fesetround(),
493 * fedisableexcept(), feenableexcept()
494 */
495 ATF_TC_WITHOUT_HEAD(feholdupdate);
ATF_TC_BODY(feholdupdate,tc)496 ATF_TC_BODY(feholdupdate, tc)
497 {
498 fenv_t env;
499
500 struct sigaction act;
501 int except, pass, status, raise;
502 unsigned i;
503
504 sigemptyset(&act.sa_mask);
505 act.sa_flags = 0;
506 act.sa_handler = trap_handler;
507 for (pass = 0; pass < 2; pass++) {
508 for (i = 0; i < NEXCEPTS; i++) {
509 except = std_excepts[i];
510 /* over/underflow may also raise inexact */
511 if (except == FE_INEXACT)
512 raise = FE_DIVBYZERO | FE_INVALID;
513 else
514 raise = ALL_STD_EXCEPT ^ except;
515
516 /*
517 * We need to fork a child process because
518 * there isn't a portable way to recover from
519 * a floating-point exception.
520 */
521 switch(fork()) {
522 case 0: /* child */
523 /*
524 * We don't want to cause a fatal exception in
525 * the child until the second pass, so we can
526 * check other properties of feupdateenv().
527 */
528 if (pass == 1)
529 ATF_REQUIRE_EQ(0,
530 feenableexcept(except) &
531 ALL_STD_EXCEPT);
532 raiseexcept(raise);
533 ATF_CHECK_EQ(0, fesetround(FE_DOWNWARD));
534 ATF_CHECK_EQ(0, feholdexcept(&env));
535 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
536 raiseexcept(except);
537 ATF_CHECK_EQ(0, fesetround(FE_UPWARD));
538
539 if (pass == 1)
540 ATF_CHECK_EQ(0, sigaction(SIGFPE, &act, NULL));
541 ATF_CHECK_EQ(0, feupdateenv(&env));
542 ATF_CHECK_EQ(FE_DOWNWARD, fegetround());
543 ATF_CHECK_EQ((except | raise), fetestexcept(ALL_STD_EXCEPT));
544
545 ATF_CHECK_EQ(0, pass);
546 _exit(0);
547 default: /* parent */
548 ATF_REQUIRE(wait(&status) > 0);
549 /*
550 * Avoid assert() here so that it's possible
551 * to examine a failed child's core dump.
552 */
553 if (!WIFEXITED(status))
554 errx(1, "child aborted\n");
555 ATF_CHECK_EQ(0, WEXITSTATUS(status));
556 break;
557 case -1: /* error */
558 ATF_REQUIRE(0);
559 }
560 }
561 #if defined(__arm__) || defined(__aarch64__) || defined(__riscv)
562 break;
563 #endif
564 }
565 ATF_CHECK_EQ(0, fetestexcept(FE_ALL_EXCEPT));
566 }
567
ATF_TP_ADD_TCS(tp)568 ATF_TP_ADD_TCS(tp)
569 {
570 ATF_TP_ADD_TC(tp, dfl_env);
571 ATF_TP_ADD_TC(tp, fetestclearexcept);
572 ATF_TP_ADD_TC(tp, fegsetexceptflag);
573 ATF_TP_ADD_TC(tp, feraiseexcept);
574 ATF_TP_ADD_TC(tp, fegsetround);
575 ATF_TP_ADD_TC(tp, fegsetenv);
576 ATF_TP_ADD_TC(tp, masking);
577 ATF_TP_ADD_TC(tp, feholdupdate);
578
579 return (atf_no_error());
580 }
581