1 /* $NetBSD: t_tanh.c,v 1.6 2011/09/12 17:45:51 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jukka Ruohonen. 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_tanh.c,v 1.6 2011/09/12 17:45:51 jruoho Exp $"); 33 34 #include <atf-c.h> 35 #include <math.h> 36 37 /* 38 * tanh(3) 39 */ 40 ATF_TC(tanh_nan); 41 ATF_TC_HEAD(tanh_nan, tc) 42 { 43 atf_tc_set_md_var(tc, "descr", "Test tanh(NaN) == NaN"); 44 } 45 46 ATF_TC_BODY(tanh_nan, tc) 47 { 48 #ifndef __vax__ 49 const double x = 0.0L / 0.0L; 50 51 ATF_CHECK(isnan(x) != 0); 52 ATF_CHECK(isnan(tanh(x)) != 0); 53 #endif 54 } 55 56 ATF_TC(tanh_inf_neg); 57 ATF_TC_HEAD(tanh_inf_neg, tc) 58 { 59 atf_tc_set_md_var(tc, "descr", "Test tanh(-Inf) == -1.0"); 60 } 61 62 ATF_TC_BODY(tanh_inf_neg, tc) 63 { 64 #ifndef __vax__ 65 const double x = -1.0L / 0.0L; 66 67 ATF_CHECK(tanh(x) == -1.0); 68 #endif 69 } 70 71 ATF_TC(tanh_inf_pos); 72 ATF_TC_HEAD(tanh_inf_pos, tc) 73 { 74 atf_tc_set_md_var(tc, "descr", "Test tanh(+Inf) == +1.0"); 75 } 76 77 ATF_TC_BODY(tanh_inf_pos, tc) 78 { 79 #ifndef __vax__ 80 const double x = 1.0L / 0.0L; 81 82 ATF_CHECK(tanh(x) == 1.0); 83 #endif 84 } 85 86 ATF_TC(tanh_zero_neg); 87 ATF_TC_HEAD(tanh_zero_neg, tc) 88 { 89 atf_tc_set_md_var(tc, "descr", "Test tanh(-0.0) == -0.0"); 90 } 91 92 ATF_TC_BODY(tanh_zero_neg, tc) 93 { 94 #ifndef __vax__ 95 const double x = -0.0L; 96 double y = tanh(x); 97 98 ATF_CHECK(x == y); 99 ATF_CHECK(signbit(x) != 0); 100 101 ATF_REQUIRE_MSG(signbit(y) != 0, 102 "compiler bug, waiting for newer gcc import, see PR lib/44057"); 103 #endif 104 } 105 106 ATF_TC(tanh_zero_pos); 107 ATF_TC_HEAD(tanh_zero_pos, tc) 108 { 109 atf_tc_set_md_var(tc, "descr", "Test tanh(+0.0) == +0.0"); 110 } 111 112 ATF_TC_BODY(tanh_zero_pos, tc) 113 { 114 #ifndef __vax__ 115 const double x = 0.0L; 116 double y = tanh(x); 117 118 ATF_CHECK(x == y); 119 ATF_CHECK(signbit(x) == 0); 120 ATF_CHECK(signbit(y) == 0); 121 #endif 122 } 123 124 /* 125 * tanhf(3) 126 */ 127 ATF_TC(tanhf_nan); 128 ATF_TC_HEAD(tanhf_nan, tc) 129 { 130 atf_tc_set_md_var(tc, "descr", "Test tanhf(NaN) == NaN"); 131 } 132 133 ATF_TC_BODY(tanhf_nan, tc) 134 { 135 #ifndef __vax__ 136 const float x = 0.0L / 0.0L; 137 138 ATF_CHECK(isnan(x) != 0); 139 ATF_CHECK(isnan(tanhf(x)) != 0); 140 #endif 141 } 142 143 ATF_TC(tanhf_inf_neg); 144 ATF_TC_HEAD(tanhf_inf_neg, tc) 145 { 146 atf_tc_set_md_var(tc, "descr", "Test tanhf(-Inf) == -1.0"); 147 } 148 149 ATF_TC_BODY(tanhf_inf_neg, tc) 150 { 151 #ifndef __vax__ 152 const float x = -1.0L / 0.0L; 153 154 ATF_CHECK(tanhf(x) == -1.0); 155 #endif 156 } 157 158 ATF_TC(tanhf_inf_pos); 159 ATF_TC_HEAD(tanhf_inf_pos, tc) 160 { 161 atf_tc_set_md_var(tc, "descr", "Test tanhf(+Inf) == +1.0"); 162 } 163 164 ATF_TC_BODY(tanhf_inf_pos, tc) 165 { 166 #ifndef __vax__ 167 const float x = 1.0L / 0.0L; 168 169 ATF_CHECK(tanhf(x) == 1.0); 170 #endif 171 } 172 173 ATF_TC(tanhf_zero_neg); 174 ATF_TC_HEAD(tanhf_zero_neg, tc) 175 { 176 atf_tc_set_md_var(tc, "descr", "Test tanhf(-0.0) == -0.0"); 177 } 178 179 ATF_TC_BODY(tanhf_zero_neg, tc) 180 { 181 #ifndef __vax__ 182 const float x = -0.0L; 183 float y = tanh(x); 184 185 ATF_CHECK(x == y); 186 ATF_CHECK(signbit(x) != 0); 187 188 ATF_REQUIRE_MSG(signbit(y) != 0, 189 "compiler bug, waiting for newer gcc import, see PR lib/44057"); 190 #endif 191 } 192 193 ATF_TC(tanhf_zero_pos); 194 ATF_TC_HEAD(tanhf_zero_pos, tc) 195 { 196 atf_tc_set_md_var(tc, "descr", "Test tanhf(+0.0) == +0.0"); 197 } 198 199 ATF_TC_BODY(tanhf_zero_pos, tc) 200 { 201 #ifndef __vax__ 202 const float x = 0.0L; 203 float y = tanhf(x); 204 205 ATF_CHECK(x == y); 206 ATF_CHECK(signbit(x) == 0); 207 ATF_CHECK(signbit(y) == 0); 208 #endif 209 } 210 211 ATF_TP_ADD_TCS(tp) 212 { 213 214 ATF_TP_ADD_TC(tp, tanh_nan); 215 ATF_TP_ADD_TC(tp, tanh_inf_neg); 216 ATF_TP_ADD_TC(tp, tanh_inf_pos); 217 ATF_TP_ADD_TC(tp, tanh_zero_neg); 218 ATF_TP_ADD_TC(tp, tanh_zero_pos); 219 220 ATF_TP_ADD_TC(tp, tanhf_nan); 221 ATF_TP_ADD_TC(tp, tanhf_inf_neg); 222 ATF_TP_ADD_TC(tp, tanhf_inf_pos); 223 ATF_TP_ADD_TC(tp, tanhf_zero_neg); 224 ATF_TP_ADD_TC(tp, tanhf_zero_pos); 225 226 return atf_no_error(); 227 } 228