tests/lib/libm/t_erf.c

   1 /* $NetBSD: t_erf.c,v 1.2 2014/03/03 10:39:08 martin 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_erf.c,v 1.2 2014/03/03 10:39:08 martin Exp $");
  33
  34 #include <atf-c.h>
  35 #include <math.h>
  36
  37 /*
  38  * erf(3)
  39  */
  40 ATF_TC(erf_nan);
  41 ATF_TC_HEAD(erf_nan, tc)
  42 {
  43         atf_tc_set_md_var(tc, "descr", "Test erf(NaN) == NaN");
  44 }
  45
  46 ATF_TC_BODY(erf_nan, tc)
  47 {
  48         const double x = 0.0L / 0.0L;
  49
  50         ATF_CHECK(isnan(erf(x)) != 0);
  51 }
  52
  53 ATF_TC(erf_inf_neg);
  54 ATF_TC_HEAD(erf_inf_neg, tc)
  55 {
  56         atf_tc_set_md_var(tc, "descr", "Test erf(-Inf) == -1.0");
  57 }
  58
  59 ATF_TC_BODY(erf_inf_neg, tc)
  60 {
  61         const double x = -1.0L / 0.0L;
  62
  63         if (erf(x) != -1.0)
  64                 atf_tc_fail_nonfatal("erf(-Inf) != -1.0");
  65 }
  66
  67 ATF_TC(erf_inf_pos);
  68 ATF_TC_HEAD(erf_inf_pos, tc)
  69 {
  70         atf_tc_set_md_var(tc, "descr", "Test erf(+Inf) == 1.0");
  71 }
  72
  73 ATF_TC_BODY(erf_inf_pos, tc)
  74 {
  75         const double x = 1.0L / 0.0L;
  76
  77         if (erf(x) != 1.0)
  78                 atf_tc_fail_nonfatal("erf(+Inf) != 1.0");
  79 }
  80
  81 ATF_TC(erf_zero_neg);
  82 ATF_TC_HEAD(erf_zero_neg, tc)
  83 {
  84         atf_tc_set_md_var(tc, "descr", "Test erf(-0.0) == -0.0");
  85 }
  86
  87 ATF_TC_BODY(erf_zero_neg, tc)
  88 {
  89         const double x = -0.0L;
  90         double y = erf(x);
  91
  92         if (fabs(y) > 0.0 || signbit(y) == 0)
  93                 atf_tc_fail_nonfatal("erf(-0.0) != -0.0");
  94 }
  95
  96 ATF_TC(erf_zero_pos);
  97 ATF_TC_HEAD(erf_zero_pos, tc)
  98 {
  99         atf_tc_set_md_var(tc, "descr", "Test erf(+0.0) == +0.0");
 100 }
 101
 102 ATF_TC_BODY(erf_zero_pos, tc)
 103 {
 104         const double x = 0.0L;
 105         double y = erf(x);
 106
 107         if (fabs(y) > 0.0 || signbit(y) != 0)
 108                 atf_tc_fail_nonfatal("erf(+0.0) != +0.0");
 109 }
 110
 111 /*
 112  * erff(3)
 113  */
 114 ATF_TC(erff_nan);
 115 ATF_TC_HEAD(erff_nan, tc)
 116 {
 117         atf_tc_set_md_var(tc, "descr", "Test erff(NaN) == NaN");
 118 }
 119
 120 ATF_TC_BODY(erff_nan, tc)
 121 {
 122         const float x = 0.0L / 0.0L;
 123
 124         ATF_CHECK(isnan(erff(x)) != 0);
 125 }
 126
 127 ATF_TC(erff_inf_neg);
 128 ATF_TC_HEAD(erff_inf_neg, tc)
 129 {
 130         atf_tc_set_md_var(tc, "descr", "Test erff(-Inf) == -1.0");
 131 }
 132
 133 ATF_TC_BODY(erff_inf_neg, tc)
 134 {
 135         const float x = -1.0L / 0.0L;
 136
 137         if (erff(x) != -1.0)
 138                 atf_tc_fail_nonfatal("erff(-Inf) != -1.0");
 139 }
 140
 141 ATF_TC(erff_inf_pos);
 142 ATF_TC_HEAD(erff_inf_pos, tc)
 143 {
 144         atf_tc_set_md_var(tc, "descr", "Test erff(+Inf) == 1.0");
 145 }
 146
 147 ATF_TC_BODY(erff_inf_pos, tc)
 148 {
 149         const float x = 1.0L / 0.0L;
 150
 151         if (erff(x) != 1.0)
 152                 atf_tc_fail_nonfatal("erff(+Inf) != 1.0");
 153 }
 154
 155 ATF_TC(erff_zero_neg);
 156 ATF_TC_HEAD(erff_zero_neg, tc)
 157 {
 158         atf_tc_set_md_var(tc, "descr", "Test erff(-0.0) == -0.0");
 159 }
 160
 161 ATF_TC_BODY(erff_zero_neg, tc)
 162 {
 163         const float x = -0.0L;
 164         float y = erff(x);
 165
 166         if (fabsf(y) > 0.0 || signbit(y) == 0)
 167                 atf_tc_fail_nonfatal("erff(-0.0) != -0.0");
 168 }
 169
 170 ATF_TC(erff_zero_pos);
 171 ATF_TC_HEAD(erff_zero_pos, tc)
 172 {
 173         atf_tc_set_md_var(tc, "descr", "Test erff(+0.0) == +0.0");
 174 }
 175
 176 ATF_TC_BODY(erff_zero_pos, tc)
 177 {
 178         const float x = 0.0L;
 179         float y = erff(x);
 180
 181         if (fabsf(y) > 0.0 || signbit(y) != 0)
 182                 atf_tc_fail_nonfatal("erff(+0.0) != +0.0");
 183 }
 184
 185 /*
 186  * erfc(3)
 187  */
 188 ATF_TC(erfc_nan);
 189 ATF_TC_HEAD(erfc_nan, tc)
 190 {
 191         atf_tc_set_md_var(tc, "descr", "Test erfc(NaN) == NaN");
 192 }
 193
 194 ATF_TC_BODY(erfc_nan, tc)
 195 {
 196         const double x = 0.0L / 0.0L;
 197
 198         ATF_CHECK(isnan(erfc(x)) != 0);
 199 }
 200
 201 ATF_TC(erfc_inf_neg);
 202 ATF_TC_HEAD(erfc_inf_neg, tc)
 203 {
 204         atf_tc_set_md_var(tc, "descr", "Test erfc(-Inf) == 2.0");
 205 }
 206
 207 ATF_TC_BODY(erfc_inf_neg, tc)
 208 {
 209         const double x = -1.0L / 0.0L;
 210
 211         if (erfc(x) != 2.0)
 212                 atf_tc_fail_nonfatal("erfc(-Inf) != 2.0");
 213 }
 214
 215 ATF_TC(erfc_inf_pos);
 216 ATF_TC_HEAD(erfc_inf_pos, tc)
 217 {
 218         atf_tc_set_md_var(tc, "descr", "Test erfc(+Inf) == +0.0");
 219 }
 220
 221 ATF_TC_BODY(erfc_inf_pos, tc)
 222 {
 223         const double x = 1.0L / 0.0L;
 224         double y = erfc(x);
 225
 226         if (fabs(y) > 0.0 || signbit(y) != 0)
 227                 atf_tc_fail_nonfatal("erfc(+Inf) != +0.0");
 228 }
 229
 230 /*
 231  * erfcf(3)
 232  */
 233 ATF_TC(erfcf_nan);
 234 ATF_TC_HEAD(erfcf_nan, tc)
 235 {
 236         atf_tc_set_md_var(tc, "descr", "Test erfcf(NaN) == NaN");
 237 }
 238
 239 ATF_TC_BODY(erfcf_nan, tc)
 240 {
 241         const float x = 0.0L / 0.0L;
 242
 243         ATF_CHECK(isnan(erfcf(x)) != 0);
 244 }
 245
 246 ATF_TC(erfcf_inf_neg);
 247 ATF_TC_HEAD(erfcf_inf_neg, tc)
 248 {
 249         atf_tc_set_md_var(tc, "descr", "Test erfcf(-Inf) == 2.0");
 250 }
 251
 252 ATF_TC_BODY(erfcf_inf_neg, tc)
 253 {
 254         const float x = -1.0L / 0.0L;
 255
 256         if (erfcf(x) != 2.0)
 257                 atf_tc_fail_nonfatal("erfcf(-Inf) != 2.0");
 258 }
 259
 260 ATF_TC(erfcf_inf_pos);
 261 ATF_TC_HEAD(erfcf_inf_pos, tc)
 262 {
 263         atf_tc_set_md_var(tc, "descr", "Test erfcf(+Inf) == +0.0");
 264 }
 265
 266 ATF_TC_BODY(erfcf_inf_pos, tc)
 267 {
 268         const float x = 1.0L / 0.0L;
 269         float y = erfcf(x);
 270
 271         if (fabsf(y) > 0.0 || signbit(y) != 0)
 272                 atf_tc_fail_nonfatal("erfcf(+Inf) != +0.0");
 273 }
 274
 275 ATF_TP_ADD_TCS(tp)
 276 {
 277
 278         ATF_TP_ADD_TC(tp, erf_nan);
 279         ATF_TP_ADD_TC(tp, erf_inf_neg);
 280         ATF_TP_ADD_TC(tp, erf_inf_pos);
 281         ATF_TP_ADD_TC(tp, erf_zero_neg);
 282         ATF_TP_ADD_TC(tp, erf_zero_pos);
 283
 284         ATF_TP_ADD_TC(tp, erff_nan);
 285         ATF_TP_ADD_TC(tp, erff_inf_neg);
 286         ATF_TP_ADD_TC(tp, erff_inf_pos);
 287         ATF_TP_ADD_TC(tp, erff_zero_neg);
 288         ATF_TP_ADD_TC(tp, erff_zero_pos);
 289
 290         ATF_TP_ADD_TC(tp, erfc_nan);
 291         ATF_TP_ADD_TC(tp, erfc_inf_neg);
 292         ATF_TP_ADD_TC(tp, erfc_inf_pos);
 293
 294         ATF_TP_ADD_TC(tp, erfcf_nan);
 295         ATF_TP_ADD_TC(tp, erfcf_inf_neg);
 296         ATF_TP_ADD_TC(tp, erfcf_inf_pos);
 297
 298         return atf_no_error();
 299 }