1 /* $NetBSD: t_errhandling.c,v 1.3 2024/09/10 17:36:12 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2024 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 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 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #define __TEST_FENV 30 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_errhandling.c,v 1.3 2024/09/10 17:36:12 riastradh Exp $"); 33 34 #include <atf-c.h> 35 #include <errno.h> 36 #include <fenv.h> 37 #include <math.h> 38 39 ATF_TC(log); 40 ATF_TC_HEAD(log, tc) 41 { 42 atf_tc_set_md_var(tc, "descr", "log of invalid"); 43 } 44 ATF_TC_BODY(log, tc) 45 { 46 static const struct { 47 #ifdef __HAVE_FENV 48 double x; 49 int e; 50 #define C(x, e) { x, e } 51 #else 52 double x; 53 #define C(x, e) { x } 54 #endif 55 } cases[] = { 56 C(0, FE_DIVBYZERO), 57 C(-0., FE_DIVBYZERO), 58 C(-1, FE_INVALID), 59 C(-HUGE_VAL, FE_INVALID), 60 }; 61 volatile double y; 62 #ifdef __HAVE_FENV 63 int except; 64 #endif 65 unsigned i; 66 67 for (i = 0; i < __arraycount(cases); i++) { 68 const volatile double x = cases[i].x; 69 70 #ifdef __HAVE_FENV 71 feclearexcept(FE_ALL_EXCEPT); 72 #endif 73 errno = 0; 74 y = log(x); 75 if (math_errhandling & MATH_ERREXCEPT) { 76 #ifdef __HAVE_FENV 77 ATF_CHECK_MSG(((except = fetestexcept(FE_ALL_EXCEPT)) & 78 cases[i].e) != 0, 79 "expected=0x%x actual=0x%x", cases[i].e, except); 80 #else 81 atf_tc_fail_nonfatal("MATH_ERREXCEPT but no fenv.h"); 82 #endif 83 } 84 if (math_errhandling & MATH_ERRNO) 85 ATF_CHECK_EQ_MSG(errno, EDOM, "errno=%d", errno); 86 } 87 88 __USE(y); 89 } 90 91 ATF_TP_ADD_TCS(tp) 92 { 93 94 ATF_TP_ADD_TC(tp, log); 95 96 return atf_no_error(); 97 } 98