1 /* $NetBSD: t_strtod.c,v 1.22 2011/07/04 22:33:29 mrg 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 32 /* Public domain, Otto Moerbeek <otto@drijf.net>, 2006. */ 33 34 #include <sys/cdefs.h> 35 __RCSID("$NetBSD: t_strtod.c,v 1.22 2011/07/04 22:33:29 mrg Exp $"); 36 37 #include <errno.h> 38 #include <math.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 #include <atf-c.h> 44 #include <atf-c/config.h> 45 46 #if defined(__i386__) || defined(__amd64__) || defined(__sparc__) 47 #include <fenv.h> 48 #endif 49 50 #if !defined(__vax__) 51 static const char * const inf_strings[] = 52 { "Inf", "INF", "-Inf", "-INF", "Infinity", "+Infinity", 53 "INFINITY", "-INFINITY", "InFiNiTy", "+InFiNiTy" }; 54 const char *nan_string = "NaN(x)y"; 55 #endif 56 57 ATF_TC(strtod_basic); 58 ATF_TC_HEAD(strtod_basic, tc) 59 { 60 atf_tc_set_md_var(tc, "descr", "A basic test of strtod(3)"); 61 } 62 63 ATF_TC_BODY(strtod_basic, tc) 64 { 65 static const size_t n = 1024 * 1000; 66 67 for (size_t i = 1; i < n; i = i + 1024) { 68 char buf[512]; 69 (void)snprintf(buf, sizeof(buf), "%zu.%zu", i, i + 1); 70 71 errno = 0; 72 double d = strtod(buf, NULL); 73 74 ATF_REQUIRE(d > 0.0); 75 ATF_REQUIRE(errno == 0); 76 } 77 } 78 79 ATF_TC(strtod_hex); 80 ATF_TC_HEAD(strtod_hex, tc) 81 { 82 atf_tc_set_md_var(tc, "descr", "A strtod(3) with hexadecimals"); 83 } 84 85 #ifdef __vax__ 86 #define SMALL_NUM 1.0e-38 87 #else 88 #define SMALL_NUM 1.0e-40 89 #endif 90 91 ATF_TC_BODY(strtod_hex, tc) 92 { 93 const char *str; 94 char *end; 95 double d; 96 97 str = "-0x0"; 98 d = strtod(str, &end); /* -0.0 */ 99 100 ATF_REQUIRE(end == str + 4); 101 ATF_REQUIRE(signbit(d) != 0); 102 ATF_REQUIRE(fabs(d) < SMALL_NUM); 103 104 str = "-0x"; 105 d = strtod(str, &end); /* -0.0 */ 106 107 ATF_REQUIRE(end == str + 2); 108 ATF_REQUIRE(signbit(d) != 0); 109 ATF_REQUIRE(fabs(d) < SMALL_NUM); 110 } 111 112 ATF_TC(strtod_inf); 113 ATF_TC_HEAD(strtod_inf, tc) 114 { 115 atf_tc_set_md_var(tc, "descr", "A strtod(3) with INF"); 116 } 117 118 ATF_TC_BODY(strtod_inf, tc) 119 { 120 #ifndef __vax__ 121 /* 122 * See the closed PR lib/33262. 123 */ 124 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 125 double d = strtod(inf_strings[i], NULL); 126 ATF_REQUIRE(isinf(d) != 0); 127 } 128 #else 129 atf_tc_skip("vax not supported"); 130 #endif 131 } 132 133 ATF_TC(strtof_inf); 134 ATF_TC_HEAD(strtof_inf, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "A strtof(3) with INF"); 137 } 138 139 ATF_TC_BODY(strtof_inf, tc) 140 { 141 #ifndef __vax__ 142 /* 143 * See the closed PR lib/33262. 144 */ 145 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 146 float f = strtof(inf_strings[i], NULL); 147 ATF_REQUIRE(isinf(f) != 0); 148 } 149 #else 150 atf_tc_skip("vax not supported"); 151 #endif 152 } 153 154 ATF_TC(strtold_inf); 155 ATF_TC_HEAD(strtold_inf, tc) 156 { 157 atf_tc_set_md_var(tc, "descr", "A strtold(3) with INF"); 158 } 159 160 ATF_TC_BODY(strtold_inf, tc) 161 { 162 #ifndef __vax__ 163 # ifdef __HAVE_LONG_DOUBLE 164 /* 165 * See the closed PR lib/33262. 166 * 167 * This may also fail under QEMU; cf. PR misc/44767. 168 */ 169 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 170 atf_tc_expect_fail("PR misc/44767"); 171 172 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 173 long double ld = strtold(inf_strings[i], NULL); 174 ATF_REQUIRE(isinf(ld) != 0); 175 } 176 # else 177 atf_tc_skip("Requires long double support"); 178 # endif 179 #else 180 atf_tc_skip("vax not supported"); 181 #endif 182 } 183 184 ATF_TC(strtod_nan); 185 ATF_TC_HEAD(strtod_nan, tc) 186 { 187 atf_tc_set_md_var(tc, "descr", "A strtod(3) with NaN"); 188 } 189 190 ATF_TC_BODY(strtod_nan, tc) 191 { 192 #ifndef __vax__ 193 char *end; 194 195 double d = strtod(nan_string, &end); 196 ATF_REQUIRE(isnan(d) != 0); 197 ATF_REQUIRE(strcmp(end, "y") == 0); 198 #else 199 atf_tc_skip("vax not supported"); 200 #endif 201 } 202 203 ATF_TC(strtof_nan); 204 ATF_TC_HEAD(strtof_nan, tc) 205 { 206 atf_tc_set_md_var(tc, "descr", "A strtof(3) with NaN"); 207 } 208 209 ATF_TC_BODY(strtof_nan, tc) 210 { 211 #ifndef __vax__ 212 char *end; 213 214 float f = strtof(nan_string, &end); 215 ATF_REQUIRE(isnanf(f) != 0); 216 ATF_REQUIRE(strcmp(end, "y") == 0); 217 #else 218 atf_tc_skip("vax not supported"); 219 #endif 220 } 221 222 ATF_TC(strtold_nan); 223 ATF_TC_HEAD(strtold_nan, tc) 224 { 225 atf_tc_set_md_var(tc, "descr", "A strtold(3) with NaN"); 226 } 227 228 ATF_TC_BODY(strtold_nan, tc) 229 { 230 #ifndef __vax__ 231 # ifdef __HAVE_LONG_DOUBLE 232 char *end; 233 234 /* 235 * See PR lib/45020. 236 * 237 * This may also fail under QEMU; cf. PR misc/44767. 238 */ 239 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 240 atf_tc_expect_fail("PR misc/44767"); 241 242 long double ld = strtold(nan_string, &end); 243 ATF_REQUIRE(isnan(ld) != 0); 244 ATF_REQUIRE(__isnanl(ld) != 0); 245 ATF_REQUIRE(strcmp(end, "y") == 0); 246 # else 247 atf_tc_skip("Requires long double support"); 248 # endif 249 #else 250 atf_tc_skip("vax not supported"); 251 #endif 252 } 253 254 ATF_TC(strtod_round); 255 ATF_TC_HEAD(strtod_round, tc) 256 { 257 atf_tc_set_md_var(tc, "descr", "Test rouding in strtod(3)"); 258 } 259 260 ATF_TC_BODY(strtod_round, tc) 261 { 262 #if defined(__i386__) || defined(__amd64__) || defined(__sparc__) 263 /* 264 * Test that strtod(3) honors the current rounding mode. 265 * The used value is somewhere near 1 + DBL_EPSILON + FLT_EPSILON. 266 * 267 * May fail under QEMU; cf. PR misc/44767. 268 */ 269 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 270 atf_tc_expect_fail("PR misc/44767"); 271 272 const char *val = 273 "1.00000011920928977282585492503130808472633361816406"; 274 275 (void)fesetround(FE_UPWARD); 276 277 double d1 = strtod(val, NULL); 278 279 (void)fesetround(FE_DOWNWARD); 280 281 double d2 = strtod(val, NULL); 282 283 ATF_REQUIRE(fabs(d1 - d2) > 0.0); 284 #else 285 atf_tc_skip("Requires one of i386, amd64 or sparc"); 286 #endif 287 } 288 289 ATF_TC(strtod_underflow); 290 ATF_TC_HEAD(strtod_underflow, tc) 291 { 292 atf_tc_set_md_var(tc, "descr", "Test underflow in strtod(3)"); 293 } 294 295 ATF_TC_BODY(strtod_underflow, tc) 296 { 297 298 const char *tmp = 299 "0.0000000000000000000000000000000000000000000000000000" 300 "000000000000000000000000000000000000000000000000000000" 301 "000000000000000000000000000000000000000000000000000000" 302 "000000000000000000000000000000000000000000000000000000" 303 "000000000000000000000000000000000000000000000000000000" 304 "000000000000000000000000000000000000000000000000000000" 305 "000000000000000000000000000000000000000000000000000000" 306 "000000000000000002"; 307 308 errno = 0; 309 double d = strtod(tmp, NULL); 310 311 if (d != 0 || errno != ERANGE) 312 atf_tc_fail("strtod(3) did not detect underflow"); 313 } 314 315 ATF_TP_ADD_TCS(tp) 316 { 317 318 ATF_TP_ADD_TC(tp, strtod_basic); 319 ATF_TP_ADD_TC(tp, strtod_hex); 320 ATF_TP_ADD_TC(tp, strtod_inf); 321 ATF_TP_ADD_TC(tp, strtof_inf); 322 ATF_TP_ADD_TC(tp, strtold_inf); 323 ATF_TP_ADD_TC(tp, strtod_nan); 324 ATF_TP_ADD_TC(tp, strtof_nan); 325 ATF_TP_ADD_TC(tp, strtold_nan); 326 ATF_TP_ADD_TC(tp, strtod_round); 327 ATF_TP_ADD_TC(tp, strtod_underflow); 328 329 return atf_no_error(); 330 } 331