tests/lib/libm/t_erf.c

   1 /* $NetBSD: t_erf.c,v 1.1 2011/09/17 12:00:50 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_erf.c,v 1.1 2011/09/17 12:00:50 jruoho 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 #ifndef __vax__
  49         const double x = 0.0L / 0.0L;
  50
  51         ATF_CHECK(isnan(erf(x)) != 0);
  52 #endif
  53 }
  54
  55 ATF_TC(erf_inf_neg);
  56 ATF_TC_HEAD(erf_inf_neg, tc)
  57 {
  58         atf_tc_set_md_var(tc, "descr", "Test erf(-Inf) == -1.0");
  59 }
  60
  61 ATF_TC_BODY(erf_inf_neg, tc)
  62 {
  63 #ifndef __vax__
  64         const double x = -1.0L / 0.0L;
  65
  66         if (erf(x) != -1.0)
  67                 atf_tc_fail_nonfatal("erf(-Inf) != -1.0");
  68 #endif
  69 }
  70
  71 ATF_TC(erf_inf_pos);
  72 ATF_TC_HEAD(erf_inf_pos, tc)
  73 {
  74         atf_tc_set_md_var(tc, "descr", "Test erf(+Inf) == 1.0");
  75 }
  76
  77 ATF_TC_BODY(erf_inf_pos, tc)
  78 {
  79 #ifndef __vax__
  80         const double x = 1.0L / 0.0L;
  81
  82         if (erf(x) != 1.0)
  83                 atf_tc_fail_nonfatal("erf(+Inf) != 1.0");
  84 #endif
  85 }
  86
  87 ATF_TC(erf_zero_neg);
  88 ATF_TC_HEAD(erf_zero_neg, tc)
  89 {
  90         atf_tc_set_md_var(tc, "descr", "Test erf(-0.0) == -0.0");
  91 }
  92
  93 ATF_TC_BODY(erf_zero_neg, tc)
  94 {
  95 #ifndef __vax__
  96         const double x = -0.0L;
  97         double y = erf(x);
  98
  99         if (fabs(y) > 0.0 || signbit(y) == 0)
 100                 atf_tc_fail_nonfatal("erf(-0.0) != -0.0");
 101 #endif
 102 }
 103
 104 ATF_TC(erf_zero_pos);
 105 ATF_TC_HEAD(erf_zero_pos, tc)
 106 {
 107         atf_tc_set_md_var(tc, "descr", "Test erf(+0.0) == +0.0");
 108 }
 109
 110 ATF_TC_BODY(erf_zero_pos, tc)
 111 {
 112 #ifndef __vax__
 113         const double x = 0.0L;
 114         double y = erf(x);
 115
 116         if (fabs(y) > 0.0 || signbit(y) != 0)
 117                 atf_tc_fail_nonfatal("erf(+0.0) != +0.0");
 118 #endif
 119 }
 120
 121 /*
 122  * erff(3)
 123  */
 124 ATF_TC(erff_nan);
 125 ATF_TC_HEAD(erff_nan, tc)
 126 {
 127         atf_tc_set_md_var(tc, "descr", "Test erff(NaN) == NaN");
 128 }
 129
 130 ATF_TC_BODY(erff_nan, tc)
 131 {
 132 #ifndef __vax__
 133         const float x = 0.0L / 0.0L;
 134
 135         ATF_CHECK(isnan(erff(x)) != 0);
 136 #endif
 137 }
 138
 139 ATF_TC(erff_inf_neg);
 140 ATF_TC_HEAD(erff_inf_neg, tc)
 141 {
 142         atf_tc_set_md_var(tc, "descr", "Test erff(-Inf) == -1.0");
 143 }
 144
 145 ATF_TC_BODY(erff_inf_neg, tc)
 146 {
 147 #ifndef __vax__
 148         const float x = -1.0L / 0.0L;
 149
 150         if (erff(x) != -1.0)
 151                 atf_tc_fail_nonfatal("erff(-Inf) != -1.0");
 152 #endif
 153 }
 154
 155 ATF_TC(erff_inf_pos);
 156 ATF_TC_HEAD(erff_inf_pos, tc)
 157 {
 158         atf_tc_set_md_var(tc, "descr", "Test erff(+Inf) == 1.0");
 159 }
 160
 161 ATF_TC_BODY(erff_inf_pos, tc)
 162 {
 163 #ifndef __vax__
 164         const float x = 1.0L / 0.0L;
 165
 166         if (erff(x) != 1.0)
 167                 atf_tc_fail_nonfatal("erff(+Inf) != 1.0");
 168 #endif
 169 }
 170
 171 ATF_TC(erff_zero_neg);
 172 ATF_TC_HEAD(erff_zero_neg, tc)
 173 {
 174         atf_tc_set_md_var(tc, "descr", "Test erff(-0.0) == -0.0");
 175 }
 176
 177 ATF_TC_BODY(erff_zero_neg, tc)
 178 {
 179 #ifndef __vax__
 180         const float x = -0.0L;
 181         float y = erff(x);
 182
 183         if (fabsf(y) > 0.0 || signbit(y) == 0)
 184                 atf_tc_fail_nonfatal("erff(-0.0) != -0.0");
 185 #endif
 186 }
 187
 188 ATF_TC(erff_zero_pos);
 189 ATF_TC_HEAD(erff_zero_pos, tc)
 190 {
 191         atf_tc_set_md_var(tc, "descr", "Test erff(+0.0) == +0.0");
 192 }
 193
 194 ATF_TC_BODY(erff_zero_pos, tc)
 195 {
 196 #ifndef __vax__
 197         const float x = 0.0L;
 198         float y = erff(x);
 199
 200         if (fabsf(y) > 0.0 || signbit(y) != 0)
 201                 atf_tc_fail_nonfatal("erff(+0.0) != +0.0");
 202 #endif
 203 }
 204
 205 /*
 206  * erfc(3)
 207  */
 208 ATF_TC(erfc_nan);
 209 ATF_TC_HEAD(erfc_nan, tc)
 210 {
 211         atf_tc_set_md_var(tc, "descr", "Test erfc(NaN) == NaN");
 212 }
 213
 214 ATF_TC_BODY(erfc_nan, tc)
 215 {
 216 #ifndef __vax__
 217         const double x = 0.0L / 0.0L;
 218
 219         ATF_CHECK(isnan(erfc(x)) != 0);
 220 #endif
 221 }
 222
 223 ATF_TC(erfc_inf_neg);
 224 ATF_TC_HEAD(erfc_inf_neg, tc)
 225 {
 226         atf_tc_set_md_var(tc, "descr", "Test erfc(-Inf) == 2.0");
 227 }
 228
 229 ATF_TC_BODY(erfc_inf_neg, tc)
 230 {
 231 #ifndef __vax__
 232         const double x = -1.0L / 0.0L;
 233
 234         if (erfc(x) != 2.0)
 235                 atf_tc_fail_nonfatal("erfc(-Inf) != 2.0");
 236 #endif
 237 }
 238
 239 ATF_TC(erfc_inf_pos);
 240 ATF_TC_HEAD(erfc_inf_pos, tc)
 241 {
 242         atf_tc_set_md_var(tc, "descr", "Test erfc(+Inf) == +0.0");
 243 }
 244
 245 ATF_TC_BODY(erfc_inf_pos, tc)
 246 {
 247 #ifndef __vax__
 248         const double x = 1.0L / 0.0L;
 249         double y = erfc(x);
 250
 251         if (fabs(y) > 0.0 || signbit(y) != 0)
 252                 atf_tc_fail_nonfatal("erfc(+Inf) != +0.0");
 253 #endif
 254 }
 255
 256 /*
 257  * erfcf(3)
 258  */
 259 ATF_TC(erfcf_nan);
 260 ATF_TC_HEAD(erfcf_nan, tc)
 261 {
 262         atf_tc_set_md_var(tc, "descr", "Test erfcf(NaN) == NaN");
 263 }
 264
 265 ATF_TC_BODY(erfcf_nan, tc)
 266 {
 267 #ifndef __vax__
 268         const float x = 0.0L / 0.0L;
 269
 270         ATF_CHECK(isnan(erfcf(x)) != 0);
 271 #endif
 272 }
 273
 274 ATF_TC(erfcf_inf_neg);
 275 ATF_TC_HEAD(erfcf_inf_neg, tc)
 276 {
 277         atf_tc_set_md_var(tc, "descr", "Test erfcf(-Inf) == 2.0");
 278 }
 279
 280 ATF_TC_BODY(erfcf_inf_neg, tc)
 281 {
 282 #ifndef __vax__
 283         const float x = -1.0L / 0.0L;
 284
 285         if (erfcf(x) != 2.0)
 286                 atf_tc_fail_nonfatal("erfcf(-Inf) != 2.0");
 287 #endif
 288 }
 289
 290 ATF_TC(erfcf_inf_pos);
 291 ATF_TC_HEAD(erfcf_inf_pos, tc)
 292 {
 293         atf_tc_set_md_var(tc, "descr", "Test erfcf(+Inf) == +0.0");
 294 }
 295
 296 ATF_TC_BODY(erfcf_inf_pos, tc)
 297 {
 298 #ifndef __vax__
 299         const float x = 1.0L / 0.0L;
 300         float y = erfcf(x);
 301
 302         if (fabsf(y) > 0.0 || signbit(y) != 0)
 303                 atf_tc_fail_nonfatal("erfcf(+Inf) != +0.0");
 304 #endif
 305 }
 306
 307 ATF_TP_ADD_TCS(tp)
 308 {
 309
 310         ATF_TP_ADD_TC(tp, erf_nan);
 311         ATF_TP_ADD_TC(tp, erf_inf_neg);
 312         ATF_TP_ADD_TC(tp, erf_inf_pos);
 313         ATF_TP_ADD_TC(tp, erf_zero_neg);
 314         ATF_TP_ADD_TC(tp, erf_zero_pos);
 315
 316         ATF_TP_ADD_TC(tp, erff_nan);
 317         ATF_TP_ADD_TC(tp, erff_inf_neg);
 318         ATF_TP_ADD_TC(tp, erff_inf_pos);
 319         ATF_TP_ADD_TC(tp, erff_zero_neg);
 320         ATF_TP_ADD_TC(tp, erff_zero_pos);
 321
 322         ATF_TP_ADD_TC(tp, erfc_nan);
 323         ATF_TP_ADD_TC(tp, erfc_inf_neg);
 324         ATF_TP_ADD_TC(tp, erfc_inf_pos);
 325
 326         ATF_TP_ADD_TC(tp, erfcf_nan);
 327         ATF_TP_ADD_TC(tp, erfcf_inf_neg);
 328         ATF_TP_ADD_TC(tp, erfcf_inf_pos);
 329
 330         return atf_no_error();
 331 }