1/*- 2 * Copyright (c) 2002-2009 David Schultz <das@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27/* 28 * Test for printf() floating point formats. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34#include <err.h> 35#include <fenv.h> 36#include <float.h> 37#include <locale.h> 38#include <math.h> 39#include <stdio.h> 40#include <stdarg.h> 41#include <stdint.h> 42#include <stdlib.h> 43#include <string.h> 44#include <wchar.h> 45 46#include <atf-c.h> 47 48static void 49smash_stack(void) 50{ 51 static uint32_t junk = 0xdeadbeef; 52 uint32_t buf[512]; 53 size_t i; 54 55 for (i = 0; i < sizeof(buf) / sizeof(buf[0]); i++) 56 buf[i] = junk; 57} 58 59#define testfmt(result, fmt, ...) \ 60 _testfmt((result), #__VA_ARGS__, fmt, __VA_ARGS__) 61static void 62_testfmt(const char *result, const char *argstr, const char *fmt,...) 63{ 64#define BUF 100 65 wchar_t ws[BUF], wfmt[BUF], wresult[BUF]; 66 char s[BUF]; 67 va_list ap, ap2; 68 69 va_start(ap, fmt); 70 va_copy(ap2, ap); 71 smash_stack(); 72 vsnprintf(s, sizeof(s), fmt, ap); 73 ATF_CHECK_MSG(strcmp(result, s) == 0, 74 "printf(\"%s\", %s) ==> [%s], expected [%s]", 75 fmt, argstr, s, result); 76 77 smash_stack(); 78 mbstowcs(ws, s, BUF - 1); 79 mbstowcs(wfmt, fmt, BUF - 1); 80 mbstowcs(wresult, result, BUF - 1); 81 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2); 82 ATF_CHECK_MSG(wcscmp(wresult, ws) == 0, 83 "wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]", 84 wfmt, argstr, ws, wresult); 85 86 va_end(ap); 87 va_end(ap2); 88} 89 90ATF_TC_WITHOUT_HEAD(float_within_limits); 91ATF_TC_BODY(float_within_limits, tc) 92{ 93 94 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 95 96 /* Basic tests of decimal output functionality. */ 97 testfmt(" 1.000000E+00", "%13E", 1.0); 98 testfmt(" 1.000000", "%13f", 1.0); 99 testfmt(" 1", "%13G", 1.0); 100 testfmt(" 1.000000E+00", "%13LE", 1.0L); 101 testfmt(" 1.000000", "%13Lf", 1.0L); 102 testfmt(" 1", "%13LG", 1.0L); 103 104 testfmt("2.718282", "%.*f", -2, 2.7182818); 105 106 testfmt("1.234568e+06", "%e", 1234567.8); 107 testfmt("1234567.800000", "%f", 1234567.8); 108 testfmt("1.23457E+06", "%G", 1234567.8); 109 testfmt("1.234568e+06", "%Le", 1234567.8L); 110 testfmt("1234567.800000", "%Lf", 1234567.8L); 111 testfmt("1.23457E+06", "%LG", 1234567.8L); 112 113#if (LDBL_MANT_DIG > DBL_MANT_DIG) && !defined(__i386__) 114 testfmt("123456789.864210", "%Lf", 123456789.8642097531L); 115 testfmt("-1.23457E+08", "%LG", -123456789.8642097531L); 116 testfmt("123456789.8642097531", "%.10Lf", 123456789.8642097531L); 117 testfmt(" 3.141592653589793238e-4000", "%L27.18Le", 118 3.14159265358979323846e-4000L); 119#endif 120} 121 122ATF_TC_WITHOUT_HEAD(infinities_and_nans); 123ATF_TC_BODY(infinities_and_nans, tc) 124{ 125 126 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 127 128 testfmt("nan", "%e", NAN); 129 testfmt("NAN", "%F", NAN); 130 testfmt("nan", "%g", NAN); 131 testfmt("NAN", "%LE", (long double)NAN); 132 testfmt(" nan", "%05e", NAN); 133 134 testfmt("INF", "%E", HUGE_VAL); 135 testfmt("-inf", "%f", -HUGE_VAL); 136 testfmt("+inf", "%+g", HUGE_VAL); 137 testfmt(" inf", "%4.2Le", HUGE_VALL); 138 testfmt("-inf", "%Lf", -HUGE_VALL); 139 testfmt(" inf", "%05e", HUGE_VAL); 140 testfmt(" -inf", "%05e", -HUGE_VAL); 141} 142 143ATF_TC_WITHOUT_HEAD(padding); 144ATF_TC_BODY(padding, tc) 145{ 146 147 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 148 149 testfmt("0.000000e+00", "%e", 0.0); 150 testfmt("0.000000", "%F", (double)0.0); 151 testfmt("0", "%G", 0.0); 152 testfmt(" 0", "%3.0Lg", 0.0L); 153 testfmt(" 0", "%5.0f", 0.001); 154} 155 156ATF_TC_WITHOUT_HEAD(precision_specifiers); 157ATF_TC_BODY(precision_specifiers, tc) 158{ 159 160 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 161 162 testfmt("1.0123e+00", "%.4e", 1.0123456789); 163 testfmt("1.0123", "%.4f", 1.0123456789); 164 testfmt("1.012", "%.4g", 1.0123456789); 165 testfmt("1.2346e-02", "%.4e", 0.0123456789); 166 testfmt("0.0123", "%.4f", 0.0123456789); 167 testfmt("0.01235", "%.4g", 0.0123456789); 168} 169 170ATF_TC_WITHOUT_HEAD(thousands_separator_and_other_locale_tests); 171ATF_TC_BODY(thousands_separator_and_other_locale_tests, tc) 172{ 173 174 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 175 176 testfmt("12345678.0625", "%'.04f", 12345678.0625); 177 testfmt("0012345678.0625", "%'015.4F", 12345678.0625); 178 179 ATF_REQUIRE(setlocale(LC_NUMERIC, "hi_IN.ISCII-DEV")); /* grouping == 2;3 */ 180 testfmt("1,23,45,678.0625", "%'.4f", 12345678.0625); 181 testfmt("01,23,45,678.0625", "%'017.4F", 12345678.0625); 182 testfmt(" 9,000", "%'6.0f", 9000.0); 183 testfmt("9,000.0", "%'.1f", 9000.0); 184 185 ATF_REQUIRE(setlocale(LC_NUMERIC, "ru_RU.ISO8859-5")); /* decimalpoint==, */ 186 testfmt("3,1415", "%g", 3.1415); 187 188 /* thousands=. decimalpoint=, grouping=3;3 */ 189 ATF_REQUIRE(setlocale(LC_NUMERIC, "el_GR.ISO8859-7")); /* decimalpoint==, */ 190 testfmt("1.234,00", "%'.2f", 1234.00); 191 testfmt("123.456,789", "%'.3f", 123456.789); 192 193 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 194 testfmt("12345678.062500", "%'f", 12345678.0625); 195 testfmt("9000.000000", "%'f", 9000.0); 196} 197 198ATF_TC_WITHOUT_HEAD(signed_conversions); 199ATF_TC_BODY(signed_conversions, tc) 200{ 201 202 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 203 204 testfmt("+2.500000e-01", "%+e", 0.25); 205 testfmt("+0.000000", "%+F", 0.0); 206 testfmt("-1", "%+g", -1.0); 207 208 testfmt("-1.000000e+00", "% e", -1.0); 209 testfmt("+1.000000", "% +f", 1.0); 210 testfmt(" 1", "% g", 1.0); 211 testfmt(" 0", "% g", 0.0); 212} 213 214ATF_TC_WITHOUT_HEAD(alternate_form); 215ATF_TC_BODY(alternate_form, tc) 216{ 217 218 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 219 220 testfmt("1.250e+00", "%#.3e", 1.25); 221 testfmt("123.000000", "%#f", 123.0); 222 testfmt(" 12345.", "%#7.5g", 12345.0); 223 testfmt(" 1.00000", "%#8g", 1.0); 224 testfmt("0.0", "%#.2g", 0.0); 225} 226 227ATF_TC_WITHOUT_HEAD(padding_and_decimal_point_placement); 228ATF_TC_BODY(padding_and_decimal_point_placement, tc) 229{ 230 231 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 232 233 testfmt("03.2E+00", "%08.1E", 3.25); 234 testfmt("003.25", "%06.2F", 3.25); 235 testfmt("0003.25", "%07.4G", 3.25); 236 237 testfmt("3.14159e-05", "%g", 3.14159e-5); 238 testfmt("0.000314159", "%g", 3.14159e-4); 239 testfmt("3.14159e+06", "%g", 3.14159e6); 240 testfmt("314159", "%g", 3.14159e5); 241 testfmt("314159.", "%#g", 3.14159e5); 242 243 testfmt(" 9.000000e+03", "%13e", 9000.0); 244 testfmt(" 9000.000000", "%12f", 9000.0); 245 testfmt(" 9000", "%5g", 9000.0); 246 testfmt(" 900000.", "%#8g", 900000.0); 247 testfmt(" 9e+06", "%6g", 9000000.0); 248 testfmt(" 9.000000e-04", "%13e", 0.0009); 249 testfmt(" 0.000900", "%9f", 0.0009); 250 testfmt(" 0.0009", "%7g", 0.0009); 251 testfmt(" 9e-05", "%6g", 0.00009); 252 testfmt(" 9.00000e-05", "%#12g", 0.00009); 253 testfmt(" 9.e-05", "%#7.1g", 0.00009); 254 255 testfmt(" 0.0", "%4.1f", 0.0); 256 testfmt("90.0", "%4.1f", 90.0); 257 testfmt(" 100", "%4.0f", 100.0); 258 testfmt("9.0e+01", "%4.1e", 90.0); 259 testfmt("1e+02", "%4.0e", 100.0); 260} 261 262ATF_TC_WITHOUT_HEAD(decimal_rounding); 263ATF_TC_BODY(decimal_rounding, tc) 264{ 265 266 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 267 268 fesetround(FE_DOWNWARD); 269 testfmt("4.437", "%.3f", 4.4375); 270 testfmt("-4.438", "%.3f", -4.4375); 271 testfmt("4.437", "%.3Lf", 4.4375L); 272 testfmt("-4.438", "%.3Lf", -4.4375L); 273 274 fesetround(FE_UPWARD); 275 testfmt("4.438", "%.3f", 4.4375); 276 testfmt("-4.437", "%.3f", -4.4375); 277 testfmt("4.438", "%.3Lf", 4.4375L); 278 testfmt("-4.437", "%.3Lf", -4.4375L); 279 280 fesetround(FE_TOWARDZERO); 281 testfmt("4.437", "%.3f", 4.4375); 282 testfmt("-4.437", "%.3f", -4.4375); 283 testfmt("4.437", "%.3Lf", 4.4375L); 284 testfmt("-4.437", "%.3Lf", -4.4375L); 285 286 fesetround(FE_TONEAREST); 287 testfmt("4.438", "%.3f", 4.4375); 288 testfmt("-4.438", "%.3f", -4.4375); 289 testfmt("4.438", "%.3Lf", 4.4375L); 290 testfmt("-4.438", "%.3Lf", -4.4375L); 291} 292 293ATF_TC_WITHOUT_HEAD(hexadecimal_floating_point); 294ATF_TC_BODY(hexadecimal_floating_point, tc) 295{ 296 297 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 298 299 /* 300 * Hexadecimal floating point (%a, %A) tests. Some of these 301 * are only valid if the implementation converts to hex digits 302 * on nibble boundaries. 303 */ 304 testfmt("0x0p+0", "%a", 0x0.0p0); 305 testfmt("0X0.P+0", "%#LA", 0x0.0p0L); 306 testfmt("inf", "%La", (long double)INFINITY); 307 testfmt("+INF", "%+A", INFINITY); 308 testfmt("nan", "%La", (long double)NAN); 309 testfmt("NAN", "%A", NAN); 310 311 testfmt(" 0x1.23p+0", "%10a", 0x1.23p0); 312 testfmt(" 0x1.23p-500", "%12a", 0x1.23p-500); 313 testfmt(" 0x1.2p+40", "%10.1a", 0x1.23p40); 314 testfmt(" 0X1.230000000000000000000000P-4", "%32.24A", 0x1.23p-4); 315 testfmt("0x1p-1074", "%a", 0x1p-1074); 316 testfmt("0x1.2345p-1024", "%a", 0x1.2345p-1024); 317 318#if (LDBL_MANT_DIG == 64) 319 testfmt("0x1.921fb54442d18468p+1", "%La", 0x3.243f6a8885a308dp0L); 320 testfmt("0x1p-16445", "%La", 0x1p-16445L); 321 testfmt("0x1.30ecap-16381", "%La", 0x9.8765p-16384L); 322#elif (LDBL_MANT_DIG == 113) 323 testfmt("0x1.921fb54442d18469898cc51701b8p+1", "%La", 324 0x3.243f6a8885a308d313198a2e037p0L); 325 testfmt("0x1p-16494", "%La", 0x1p-16494L); 326 testfmt("0x1.2345p-16384", "%La", 0x1.2345p-16384L); 327#else 328 testfmt("0x1.921fb54442d18p+1", "%La", 0x3.243f6a8885a31p0L); 329 testfmt("0x1p-1074", "%La", 0x1p-1074L); 330 testfmt("0x1.30ecap-1021", "%La", 0x9.8765p-1024L); 331#endif 332} 333 334ATF_TC_WITHOUT_HEAD(hexadecimal_rounding); 335ATF_TC_BODY(hexadecimal_rounding, tc) 336{ 337 338 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 339 340 fesetround(FE_TOWARDZERO); 341 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 342 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 343 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 344 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 345 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 346 347 fesetround(FE_DOWNWARD); 348 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 349 testfmt("-0x1.23457p+0", "%.5a", -0x1.23456789abcdep0); 350 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 351 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 352 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 353 354 fesetround(FE_UPWARD); 355 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 356 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 357 testfmt("0x1.23457p+0", "%.5a", 0x1.23456789abcdep0); 358 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 359 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 360 361 fesetround(FE_TONEAREST); 362 testfmt("0x1.23456789abcdep+4", "%a", 0x1.23456789abcdep4); 363 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 364 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 365 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 366 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 367 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 368 testfmt("0x1.00p-1029", "%.2a", 0x1.fffp-1030); 369 testfmt("0x1.00p-1026", "%.2a", 0xf.fffp-1030); 370 testfmt("0x1.83p+0", "%.2a", 1.51); 371} 372 373ATF_TC_WITHOUT_HEAD(subnormal_double); 374ATF_TC_BODY(subnormal_double, tc) 375{ 376 /* Regression test for https://bugs.freebsd.org/253847 */ 377 double positive = __DBL_DENORM_MIN__; 378 testfmt("4.9406564584124654418e-324", "%20.20g", positive); 379 testfmt("4.9406564584124654418E-324", "%20.20G", positive); 380 testfmt("0x1p-1074", "%a", positive); 381 testfmt("0X1P-1074", "%A", positive); 382 double negative = -__DBL_DENORM_MIN__; 383 testfmt("-4.9406564584124654418e-324", "%20.20g", negative); 384 testfmt("-4.9406564584124654418E-324", "%20.20G", negative); 385 testfmt("-0x1p-1074", "%a", negative); 386 testfmt("-0X1P-1074", "%A", negative); 387} 388 389ATF_TC_WITHOUT_HEAD(subnormal_float); 390ATF_TC_BODY(subnormal_float, tc) 391{ 392 float positive = __FLT_DENORM_MIN__; 393 testfmt("1.4012984643248170709e-45", "%20.20g", positive); 394 testfmt("1.4012984643248170709E-45", "%20.20G", positive); 395 testfmt("0x1p-149", "%a", positive); 396 testfmt("0X1P-149", "%A", positive); 397 float negative = -__FLT_DENORM_MIN__; 398 testfmt("-1.4012984643248170709e-45", "%20.20g", negative); 399 testfmt("-1.4012984643248170709E-45", "%20.20G", negative); 400 testfmt("-0x1p-149", "%a", negative); 401 testfmt("-0X1P-149", "%A", negative); 402} 403 404ATF_TP_ADD_TCS(tp) 405{ 406 407 ATF_TP_ADD_TC(tp, float_within_limits); 408 ATF_TP_ADD_TC(tp, infinities_and_nans); 409 ATF_TP_ADD_TC(tp, padding); 410 ATF_TP_ADD_TC(tp, precision_specifiers); 411 ATF_TP_ADD_TC(tp, thousands_separator_and_other_locale_tests); 412 ATF_TP_ADD_TC(tp, signed_conversions); 413 ATF_TP_ADD_TC(tp, alternate_form); 414 ATF_TP_ADD_TC(tp, padding_and_decimal_point_placement); 415 ATF_TP_ADD_TC(tp, decimal_rounding); 416 ATF_TP_ADD_TC(tp, hexadecimal_floating_point); 417 ATF_TP_ADD_TC(tp, hexadecimal_rounding); 418 ATF_TP_ADD_TC(tp, subnormal_double); 419 ATF_TP_ADD_TC(tp, subnormal_float); 420 421 return (atf_no_error()); 422} 423