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
53static 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[] */
62static 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 */
69static __attribute__((constructor)) void
70do_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 */
90static void
91raiseexcept(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 */
136static int
137getround(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
163static void
164trap_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 */
176ATF_TC_WITHOUT_HEAD(dfl_env);
177ATF_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 */
221ATF_TC_WITHOUT_HEAD(fetestclearexcept);
222ATF_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 */
255ATF_TC_WITHOUT_HEAD(fegsetexceptflag);
256ATF_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 */
286ATF_TC_WITHOUT_HEAD(feraiseexcept);
287ATF_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 */
314ATF_TC_WITHOUT_HEAD(fegsetround);
315ATF_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 */
349ATF_TC_WITHOUT_HEAD(fegsetenv);
350ATF_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 */
398ATF_TC_WITHOUT_HEAD(masking);
399ATF_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 */
495ATF_TC_WITHOUT_HEAD(feholdupdate);
496ATF_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
568ATF_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