1 /* $NetBSD: t_fpsetmask.c,v 1.16 2016/03/12 11:55:14 martin Exp $ */
4 * Copyright (c) 1995 The NetBSD Foundation, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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12 * 2. Redistributions in binary form must reproduce the above copyright
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16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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29 #include <sys/param.h>
42 #ifndef _FLOAT_IEEE754
45 ATF_TC_HEAD(no_test, tc)
48 atf_tc_set_md_var(tc, "descr", "Dummy test case");
51 ATF_TC_BODY(no_test, tc)
54 atf_tc_skip("Test not available on this architecture.");
57 #else /* defined(_FLOAT_IEEE754) */
61 #if __arm__ && !__SOFTFP__
63 * Some NEON fpus do not implement IEEE exception handling,
64 * skip these tests if running on them and compiled for
67 #define FPU_PREREQ() \
68 if (0 == fpsetmask(fpsetmask(FP_X_INV))) \
69 atf_tc_skip("FPU does not implement exception handling");
73 #define FPU_PREREQ() /* nothing */
76 void sigfpe(int, siginfo_t *, void *);
78 volatile sig_atomic_t signal_caught;
81 static volatile const float f_one = 1.0;
82 static volatile const float f_zero = 0.0;
83 static volatile const double d_one = 1.0;
84 static volatile const double d_zero = 0.0;
85 static volatile const long double ld_one = 1.0;
86 static volatile const long double ld_zero = 0.0;
88 static volatile const float f_huge = FLT_MAX;
89 static volatile const float f_tiny = FLT_MIN;
90 static volatile const double d_huge = DBL_MAX;
91 static volatile const double d_tiny = DBL_MIN;
92 static volatile const long double ld_huge = LDBL_MAX;
93 static volatile const long double ld_tiny = LDBL_MIN;
95 static volatile float f_x;
96 static volatile double d_x;
97 static volatile long double ld_x;
99 /* trip divide by zero */
104 f_x = f_one / f_zero;
111 d_x = d_one / d_zero;
118 ld_x = ld_one / ld_zero;
121 /* trip invalid operation */
126 d_x = d_zero / d_zero;
133 ld_x = ld_zero / ld_zero;
140 f_x = f_zero / f_zero;
148 f_x = f_huge * f_huge;
155 d_x = d_huge * d_huge;
162 ld_x = ld_huge * ld_huge;
170 f_x = f_tiny * f_tiny;
177 d_x = d_tiny * d_tiny;
184 ld_x = ld_tiny * ld_tiny;
193 static const struct ops float_ops[] = {
194 { f_dz, FP_X_DZ, FPE_FLTDIV },
195 { f_inv, FP_X_INV, FPE_FLTINV },
196 { f_ofl, FP_X_OFL, FPE_FLTOVF },
197 { f_ufl, FP_X_UFL, FPE_FLTUND },
201 static const struct ops double_ops[] = {
202 { d_dz, FP_X_DZ, FPE_FLTDIV },
203 { d_inv, FP_X_INV, FPE_FLTINV },
204 { d_ofl, FP_X_OFL, FPE_FLTOVF },
205 { d_ufl, FP_X_UFL, FPE_FLTUND },
209 static const struct ops long_double_ops[] = {
210 { ld_dz, FP_X_DZ, FPE_FLTDIV },
211 { ld_inv, FP_X_INV, FPE_FLTINV },
212 { ld_ofl, FP_X_OFL, FPE_FLTOVF },
213 { ld_ufl, FP_X_UFL, FPE_FLTUND },
220 fpsetmask_masked(const struct ops *test_ops)
226 /* mask all exceptions, clear history */
230 /* set up signal handler */
231 sa.sa_sigaction = sigfpe;
232 sigemptyset(&sa.sa_mask);
233 sa.sa_flags = SA_SIGINFO;
234 sigaction(SIGFPE, &sa, 0);
238 * exceptions masked, check whether "sticky" bits are set correctly
240 for (t = test_ops; t->op != NULL; t++) {
243 ATF_CHECK_EQ(ex1 & t->mask, t->mask);
244 ATF_CHECK_EQ(signal_caught, 0);
246 /* check correct fpsetsticky() behaviour */
247 ex2 = fpsetsticky(0);
248 ATF_CHECK_EQ(fpgetsticky(), 0);
249 ATF_CHECK_EQ(ex1, ex2);
253 /* force delayed exceptions to be delivered */
254 #define BARRIER() fpsetmask(0); f_x = f_one * f_one
257 fpsetmask_unmasked(const struct ops *test_ops)
261 const struct ops *volatile t;
263 /* mask all exceptions, clear history */
267 /* set up signal handler */
268 sa.sa_sigaction = sigfpe;
269 sigemptyset(&sa.sa_mask);
270 sa.sa_flags = SA_SIGINFO;
271 sigaction(SIGFPE, &sa, 0);
275 * exception unmasked, check SIGFPE delivery and correct siginfo
277 for (t = test_ops; t->op != NULL; t++) {
284 ATF_CHECK_EQ(signal_caught, 1);
285 ATF_CHECK_EQ(sicode, t->sicode);
291 sigfpe(int s, siginfo_t *si, void *c)
294 sicode = si->si_code;
301 ATF_TC_HEAD(m##_##t, tc) \
304 atf_tc_set_md_var(tc, "descr", \
305 "Test " ___STRING(m) " exceptions for " \
306 ___STRING(t) "values"); \
309 ATF_TC_BODY(m##_##t, tc) \
314 if (strcmp(MACHINE, "macppc") == 0) \
315 atf_tc_expect_fail("PR port-macppc/46319"); \
318 atf_tc_expect_fail("PR misc/44767"); \
323 TEST(fpsetmask_masked, float)
324 TEST(fpsetmask_masked, double)
325 TEST(fpsetmask_masked, long_double)
326 TEST(fpsetmask_unmasked, float)
327 TEST(fpsetmask_unmasked, double)
328 TEST(fpsetmask_unmasked, long_double)
330 ATF_TC(fpsetmask_basic);
331 ATF_TC_HEAD(fpsetmask_basic, tc)
333 atf_tc_set_md_var(tc, "descr", "A basic test of fpsetmask(3)");
336 ATF_TC_BODY(fpsetmask_basic, tc)
339 fp_except_t msk, lst[] = { FP_X_INV, FP_X_DZ, FP_X_OFL, FP_X_UFL };
344 for (i = 0; i < __arraycount(lst); i++) {
345 fpsetmask(msk | lst[i]);
346 ATF_CHECK((fpgetmask() & lst[i]) != 0);
347 fpsetmask(msk & ~lst[i]);
348 ATF_CHECK((fpgetmask() & lst[i]) == 0);
353 #endif /* defined(_FLOAT_IEEE754) */
358 #ifndef _FLOAT_IEEE754
359 ATF_TP_ADD_TC(tp, no_test);
361 ATF_TP_ADD_TC(tp, fpsetmask_basic);
362 ATF_TP_ADD_TC(tp, fpsetmask_masked_float);
363 ATF_TP_ADD_TC(tp, fpsetmask_masked_double);
364 ATF_TP_ADD_TC(tp, fpsetmask_masked_long_double);
365 ATF_TP_ADD_TC(tp, fpsetmask_unmasked_float);
366 ATF_TP_ADD_TC(tp, fpsetmask_unmasked_double);
367 ATF_TP_ADD_TC(tp, fpsetmask_unmasked_long_double);
370 return atf_no_error();