1 /* $NetBSD: t_fenv.c,v 1.6 2019/04/25 20:48:54 kamil Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_fenv.c,v 1.6 2019/04/25 20:48:54 kamil Exp $"); 33 34 #include <atf-c.h> 35 36 #include <fenv.h> 37 #ifdef __HAVE_FENV 38 39 #include <ieeefp.h> 40 #include <stdlib.h> 41 42 43 #if (__arm__ && !__SOFTFP__) || __aarch64__ 44 /* 45 * Some NEON fpus do not trap on IEEE 754 FP exceptions. 46 * Skip these tests if running on them and compiled for 47 * hard float. 48 */ 49 #define FPU_EXC_PREREQ() \ 50 if (0 == fpsetmask(fpsetmask(FP_X_INV))) \ 51 atf_tc_skip("FPU does not implement traps on FP exceptions"); 52 53 /* 54 * Same as above: some don't allow configuring the rounding mode. 55 */ 56 #define FPU_RND_PREREQ() \ 57 if (0 == fpsetround(fpsetround(FP_RZ))) \ 58 atf_tc_skip("FPU does not implement configurable " \ 59 "rounding modes"); 60 #endif 61 62 #ifndef FPU_EXC_PREREQ 63 #define FPU_EXC_PREREQ() /* nothing */ 64 #endif 65 #ifndef FPU_RND_PREREQ 66 #define FPU_RND_PREREQ() /* nothing */ 67 #endif 68 69 70 ATF_TC(fegetround); 71 72 ATF_TC_HEAD(fegetround, tc) 73 { 74 atf_tc_set_md_var(tc, "descr", 75 "verify the fegetround() function agrees with the legacy " 76 "fpsetround"); 77 } 78 79 ATF_TC_BODY(fegetround, tc) 80 { 81 FPU_RND_PREREQ(); 82 83 fpsetround(FP_RZ); 84 ATF_CHECK(fegetround() == FE_TOWARDZERO); 85 fpsetround(FP_RM); 86 ATF_CHECK(fegetround() == FE_DOWNWARD); 87 fpsetround(FP_RN); 88 ATF_CHECK(fegetround() == FE_TONEAREST); 89 fpsetround(FP_RP); 90 ATF_CHECK(fegetround() == FE_UPWARD); 91 } 92 93 ATF_TC(fesetround); 94 95 ATF_TC_HEAD(fesetround, tc) 96 { 97 atf_tc_set_md_var(tc, "descr", 98 "verify the fesetround() function agrees with the legacy " 99 "fpgetround"); 100 } 101 102 ATF_TC_BODY(fesetround, tc) 103 { 104 FPU_RND_PREREQ(); 105 106 fesetround(FE_TOWARDZERO); 107 ATF_CHECK(fpgetround() == FP_RZ); 108 fesetround(FE_DOWNWARD); 109 ATF_CHECK(fpgetround() == FP_RM); 110 fesetround(FE_TONEAREST); 111 ATF_CHECK(fpgetround() == FP_RN); 112 fesetround(FE_UPWARD); 113 ATF_CHECK(fpgetround() == FP_RP); 114 } 115 116 ATF_TC(fegetexcept); 117 118 ATF_TC_HEAD(fegetexcept, tc) 119 { 120 atf_tc_set_md_var(tc, "descr", 121 "verify the fegetexcept() function agrees with the legacy " 122 "fpsetmask()"); 123 } 124 125 ATF_TC_BODY(fegetexcept, tc) 126 { 127 FPU_EXC_PREREQ(); 128 129 fpsetmask(0); 130 ATF_CHECK(fegetexcept() == 0); 131 132 fpsetmask(FP_X_INV|FP_X_DZ|FP_X_OFL|FP_X_UFL|FP_X_IMP); 133 ATF_CHECK(fegetexcept() == (FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW 134 |FE_UNDERFLOW|FE_INEXACT)); 135 136 fpsetmask(FP_X_INV); 137 ATF_CHECK(fegetexcept() == FE_INVALID); 138 139 fpsetmask(FP_X_DZ); 140 ATF_CHECK(fegetexcept() == FE_DIVBYZERO); 141 142 fpsetmask(FP_X_OFL); 143 ATF_CHECK(fegetexcept() == FE_OVERFLOW); 144 145 fpsetmask(FP_X_UFL); 146 ATF_CHECK(fegetexcept() == FE_UNDERFLOW); 147 148 fpsetmask(FP_X_IMP); 149 ATF_CHECK(fegetexcept() == FE_INEXACT); 150 } 151 152 ATF_TC(feenableexcept); 153 154 ATF_TC_HEAD(feenableexcept, tc) 155 { 156 atf_tc_set_md_var(tc, "descr", 157 "verify the feenableexcept() function agrees with the legacy " 158 "fpgetmask()"); 159 } 160 161 ATF_TC_BODY(feenableexcept, tc) 162 { 163 FPU_EXC_PREREQ(); 164 165 fedisableexcept(FE_ALL_EXCEPT); 166 ATF_CHECK(fpgetmask() == 0); 167 168 feenableexcept(FE_UNDERFLOW); 169 ATF_CHECK(fpgetmask() == FP_X_UFL); 170 171 fedisableexcept(FE_ALL_EXCEPT); 172 feenableexcept(FE_OVERFLOW); 173 ATF_CHECK(fpgetmask() == FP_X_OFL); 174 175 fedisableexcept(FE_ALL_EXCEPT); 176 feenableexcept(FE_DIVBYZERO); 177 ATF_CHECK(fpgetmask() == FP_X_DZ); 178 179 fedisableexcept(FE_ALL_EXCEPT); 180 feenableexcept(FE_INEXACT); 181 ATF_CHECK(fpgetmask() == FP_X_IMP); 182 183 fedisableexcept(FE_ALL_EXCEPT); 184 feenableexcept(FE_INVALID); 185 ATF_CHECK(fpgetmask() == FP_X_INV); 186 } 187 188 ATF_TP_ADD_TCS(tp) 189 { 190 ATF_TP_ADD_TC(tp, fegetround); 191 ATF_TP_ADD_TC(tp, fesetround); 192 ATF_TP_ADD_TC(tp, fegetexcept); 193 ATF_TP_ADD_TC(tp, feenableexcept); 194 195 return atf_no_error(); 196 } 197 198 #else /* no fenv.h support */ 199 200 ATF_TC(t_nofenv); 201 202 ATF_TC_HEAD(t_nofenv, tc) 203 { 204 atf_tc_set_md_var(tc, "descr", 205 "dummy test case - no fenv.h support"); 206 } 207 208 209 ATF_TC_BODY(t_nofenv, tc) 210 { 211 atf_tc_skip("no fenv.h support on this architecture"); 212 } 213 214 ATF_TP_ADD_TCS(tp) 215 { 216 ATF_TP_ADD_TC(tp, t_nofenv); 217 return atf_no_error(); 218 } 219 220 #endif 221