1 /* $NetBSD: t_strtod.c,v 1.21 2011/06/14 02:37:31 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 32 /* Public domain, Otto Moerbeek <otto@drijf.net>, 2006. */ 33 34 #include <sys/cdefs.h> 35 __RCSID("$NetBSD: t_strtod.c,v 1.21 2011/06/14 02:37:31 jruoho 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 ATF_TC_BODY(strtod_hex, tc) 86 { 87 const char *str; 88 char *end; 89 double d; 90 91 str = "-0x0"; 92 d = strtod(str, &end); /* -0.0 */ 93 94 ATF_REQUIRE(end == str + 4); 95 ATF_REQUIRE(signbit(d) != 0); 96 ATF_REQUIRE(fabs(d) < 1.0e-40); 97 98 str = "-0x"; 99 d = strtod(str, &end); /* -0.0 */ 100 101 ATF_REQUIRE(end == str + 2); 102 ATF_REQUIRE(signbit(d) != 0); 103 ATF_REQUIRE(fabs(d) < 1.0e-40); 104 } 105 106 ATF_TC(strtod_inf); 107 ATF_TC_HEAD(strtod_inf, tc) 108 { 109 atf_tc_set_md_var(tc, "descr", "A strtod(3) with INF"); 110 } 111 112 ATF_TC_BODY(strtod_inf, tc) 113 { 114 #ifndef __vax__ 115 /* 116 * See the closed PR lib/33262. 117 */ 118 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 119 double d = strtod(inf_strings[i], NULL); 120 ATF_REQUIRE(isinf(d) != 0); 121 } 122 #else 123 atf_tc_skip("vax not supported"); 124 #endif 125 } 126 127 ATF_TC(strtof_inf); 128 ATF_TC_HEAD(strtof_inf, tc) 129 { 130 atf_tc_set_md_var(tc, "descr", "A strtof(3) with INF"); 131 } 132 133 ATF_TC_BODY(strtof_inf, tc) 134 { 135 #ifndef __vax__ 136 /* 137 * See the closed PR lib/33262. 138 */ 139 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 140 float f = strtof(inf_strings[i], NULL); 141 ATF_REQUIRE(isinf(f) != 0); 142 } 143 #else 144 atf_tc_skip("vax not supported"); 145 #endif 146 } 147 148 ATF_TC(strtold_inf); 149 ATF_TC_HEAD(strtold_inf, tc) 150 { 151 atf_tc_set_md_var(tc, "descr", "A strtold(3) with INF"); 152 } 153 154 ATF_TC_BODY(strtold_inf, tc) 155 { 156 #ifndef __vax__ 157 # ifdef __HAVE_LONG_DOUBLE 158 /* 159 * See the closed PR lib/33262. 160 * 161 * This may also fail under QEMU; cf. PR misc/44767. 162 */ 163 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 164 atf_tc_expect_fail("PR misc/44767"); 165 166 for (size_t i = 0; i < __arraycount(inf_strings); i++) { 167 long double ld = strtold(inf_strings[i], NULL); 168 ATF_REQUIRE(isinf(ld) != 0); 169 } 170 # else 171 atf_tc_skip("Requires long double support"); 172 # endif 173 #else 174 atf_tc_skip("vax not supported"); 175 #endif 176 } 177 178 ATF_TC(strtod_nan); 179 ATF_TC_HEAD(strtod_nan, tc) 180 { 181 atf_tc_set_md_var(tc, "descr", "A strtod(3) with NaN"); 182 } 183 184 ATF_TC_BODY(strtod_nan, tc) 185 { 186 #ifndef __vax__ 187 char *end; 188 189 double d = strtod(nan_string, &end); 190 ATF_REQUIRE(isnan(d) != 0); 191 ATF_REQUIRE(strcmp(end, "y") == 0); 192 #else 193 atf_tc_skip("vax not supported"); 194 #endif 195 } 196 197 ATF_TC(strtof_nan); 198 ATF_TC_HEAD(strtof_nan, tc) 199 { 200 atf_tc_set_md_var(tc, "descr", "A strtof(3) with NaN"); 201 } 202 203 ATF_TC_BODY(strtof_nan, tc) 204 { 205 #ifndef __vax__ 206 char *end; 207 208 float f = strtof(nan_string, &end); 209 ATF_REQUIRE(isnanf(f) != 0); 210 ATF_REQUIRE(strcmp(end, "y") == 0); 211 #else 212 atf_tc_skip("vax not supported"); 213 #endif 214 } 215 216 ATF_TC(strtold_nan); 217 ATF_TC_HEAD(strtold_nan, tc) 218 { 219 atf_tc_set_md_var(tc, "descr", "A strtold(3) with NaN"); 220 } 221 222 ATF_TC_BODY(strtold_nan, tc) 223 { 224 #ifndef __vax__ 225 # ifdef __HAVE_LONG_DOUBLE 226 char *end; 227 228 /* 229 * See PR lib/45020. 230 * 231 * This may also fail under QEMU; cf. PR misc/44767. 232 */ 233 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 234 atf_tc_expect_fail("PR misc/44767"); 235 236 long double ld = strtold(nan_string, &end); 237 ATF_REQUIRE(isnan(ld) != 0); 238 ATF_REQUIRE(__isnanl(ld) != 0); 239 ATF_REQUIRE(strcmp(end, "y") == 0); 240 # else 241 atf_tc_skip("Requires long double support"); 242 # endif 243 #else 244 atf_tc_skip("vax not supported"); 245 #endif 246 } 247 248 ATF_TC(strtod_round); 249 ATF_TC_HEAD(strtod_round, tc) 250 { 251 atf_tc_set_md_var(tc, "descr", "Test rouding in strtod(3)"); 252 } 253 254 ATF_TC_BODY(strtod_round, tc) 255 { 256 #if defined(__i386__) || defined(__amd64__) || defined(__sparc__) 257 /* 258 * Test that strtod(3) honors the current rounding mode. 259 * The used value is somewhere near 1 + DBL_EPSILON + FLT_EPSILON. 260 * 261 * May fail under QEMU; cf. PR misc/44767. 262 */ 263 if (system("cpuctl identify 0 | grep -q QEMU") == 0) 264 atf_tc_expect_fail("PR misc/44767"); 265 266 const char *val = 267 "1.00000011920928977282585492503130808472633361816406"; 268 269 (void)fesetround(FE_UPWARD); 270 271 double d1 = strtod(val, NULL); 272 273 (void)fesetround(FE_DOWNWARD); 274 275 double d2 = strtod(val, NULL); 276 277 ATF_REQUIRE(fabs(d1 - d2) > 0.0); 278 #else 279 atf_tc_skip("Requires one of i386, amd64 or sparc"); 280 #endif 281 } 282 283 ATF_TC(strtod_underflow); 284 ATF_TC_HEAD(strtod_underflow, tc) 285 { 286 atf_tc_set_md_var(tc, "descr", "Test underflow in strtod(3)"); 287 } 288 289 ATF_TC_BODY(strtod_underflow, tc) 290 { 291 292 const char *tmp = 293 "0.0000000000000000000000000000000000000000000000000000" 294 "000000000000000000000000000000000000000000000000000000" 295 "000000000000000000000000000000000000000000000000000000" 296 "000000000000000000000000000000000000000000000000000000" 297 "000000000000000000000000000000000000000000000000000000" 298 "000000000000000000000000000000000000000000000000000000" 299 "000000000000000000000000000000000000000000000000000000" 300 "000000000000000002"; 301 302 errno = 0; 303 double d = strtod(tmp, NULL); 304 305 if (d != 0 || errno != ERANGE) 306 atf_tc_fail("strtod(3) did not detect underflow"); 307 } 308 309 ATF_TP_ADD_TCS(tp) 310 { 311 312 ATF_TP_ADD_TC(tp, strtod_basic); 313 ATF_TP_ADD_TC(tp, strtod_hex); 314 ATF_TP_ADD_TC(tp, strtod_inf); 315 ATF_TP_ADD_TC(tp, strtof_inf); 316 ATF_TP_ADD_TC(tp, strtold_inf); 317 ATF_TP_ADD_TC(tp, strtod_nan); 318 ATF_TP_ADD_TC(tp, strtof_nan); 319 ATF_TP_ADD_TC(tp, strtold_nan); 320 ATF_TP_ADD_TC(tp, strtod_round); 321 ATF_TP_ADD_TC(tp, strtod_underflow); 322 323 return atf_no_error(); 324 } 325