printfloat_test.c revision 290842
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: head/lib/libc/tests/stdio/printfloat_test.c 290842 2015-11-15 03:56:09Z ngie $"); 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 int 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 if (strcmp(result, s) != 0) { 74 atf_tc_fail( 75 "printf(\"%s\", %s) ==> [%s], expected [%s]\n", 76 fmt, argstr, s, result); 77 } 78 79 smash_stack(); 80 mbstowcs(ws, s, BUF - 1); 81 mbstowcs(wfmt, fmt, BUF - 1); 82 mbstowcs(wresult, result, BUF - 1); 83 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2); 84 if (wcscmp(wresult, ws) != 0) { 85 atf_tc_fail( 86 "wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]\n", 87 wfmt, argstr, ws, wresult); 88 } 89} 90 91ATF_TC_WITHOUT_HEAD(float_within_limits); 92ATF_TC_BODY(float_within_limits, tc) 93{ 94 95 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 96 97 /* Basic tests of decimal output functionality. */ 98 testfmt(" 1.000000E+00", "%13E", 1.0); 99 testfmt(" 1.000000", "%13f", 1.0); 100 testfmt(" 1", "%13G", 1.0); 101 testfmt(" 1.000000E+00", "%13LE", 1.0L); 102 testfmt(" 1.000000", "%13Lf", 1.0L); 103 testfmt(" 1", "%13LG", 1.0L); 104 105 testfmt("2.718282", "%.*f", -2, 2.7182818); 106 107 testfmt("1.234568e+06", "%e", 1234567.8); 108 testfmt("1234567.800000", "%f", 1234567.8); 109 testfmt("1.23457E+06", "%G", 1234567.8); 110 testfmt("1.234568e+06", "%Le", 1234567.8L); 111 testfmt("1234567.800000", "%Lf", 1234567.8L); 112 testfmt("1.23457E+06", "%LG", 1234567.8L); 113 114#if (LDBL_MANT_DIG > DBL_MANT_DIG) && !defined(__i386__) 115 testfmt("123456789.864210", "%Lf", 123456789.8642097531L); 116 testfmt("-1.23457E+08", "%LG", -123456789.8642097531L); 117 testfmt("123456789.8642097531", "%.10Lf", 123456789.8642097531L); 118 testfmt(" 3.141592653589793238e-4000", "%L27.18Le", 119 3.14159265358979323846e-4000L); 120#endif 121} 122 123ATF_TC_WITHOUT_HEAD(infinities_and_nans); 124ATF_TC_BODY(infinities_and_nans, tc) 125{ 126 127 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 128 129 testfmt("nan", "%e", NAN); 130 testfmt("NAN", "%F", NAN); 131 testfmt("nan", "%g", NAN); 132 testfmt("NAN", "%LE", (long double)NAN); 133 testfmt(" nan", "%05e", NAN); 134 135 testfmt("INF", "%E", HUGE_VAL); 136 testfmt("-inf", "%f", -HUGE_VAL); 137 testfmt("+inf", "%+g", HUGE_VAL); 138 testfmt(" inf", "%4.2Le", HUGE_VALL); 139 testfmt("-inf", "%Lf", -HUGE_VALL); 140 testfmt(" inf", "%05e", HUGE_VAL); 141 testfmt(" -inf", "%05e", -HUGE_VAL); 142} 143 144ATF_TC_WITHOUT_HEAD(padding); 145ATF_TC_BODY(padding, tc) 146{ 147 148 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 149 150 testfmt("0.000000e+00", "%e", 0.0); 151 testfmt("0.000000", "%F", (double)0.0); 152 testfmt("0", "%G", 0.0); 153 testfmt(" 0", "%3.0Lg", 0.0L); 154 testfmt(" 0", "%5.0f", 0.001); 155} 156 157ATF_TC_WITHOUT_HEAD(precision_specifiers); 158ATF_TC_BODY(precision_specifiers, tc) 159{ 160 161 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 162 163 testfmt("1.0123e+00", "%.4e", 1.0123456789); 164 testfmt("1.0123", "%.4f", 1.0123456789); 165 testfmt("1.012", "%.4g", 1.0123456789); 166 testfmt("1.2346e-02", "%.4e", 0.0123456789); 167 testfmt("0.0123", "%.4f", 0.0123456789); 168 testfmt("0.01235", "%.4g", 0.0123456789); 169} 170 171ATF_TC_WITHOUT_HEAD(thousands_separator_and_other_locale_tests); 172ATF_TC_BODY(thousands_separator_and_other_locale_tests, tc) 173{ 174 175 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 176 177 testfmt("12345678.0625", "%'.04f", 12345678.0625); 178 testfmt("0012345678.0625", "%'015.4F", 12345678.0625); 179 180 ATF_REQUIRE(setlocale(LC_NUMERIC, "hi_IN.ISCII-DEV")); /* grouping == 2;3 */ 181 testfmt("1,23,45,678.0625", "%'.4f", 12345678.0625); 182 testfmt("01,23,45,678.0625", "%'017.4F", 12345678.0625); 183 testfmt(" 9,000", "%'6.0f", 9000.0); 184 testfmt("9,000.0", "%'.1f", 9000.0); 185 186 ATF_REQUIRE(setlocale(LC_NUMERIC, "ru_RU.ISO8859-5")); /* decimalpoint==, */ 187 testfmt("3,1415", "%g", 3.1415); 188 189 /* thousands=. decimalpoint=, grouping=3;3 */ 190 ATF_REQUIRE(setlocale(LC_NUMERIC, "el_GR.ISO8859-7")); /* decimalpoint==, */ 191 testfmt("1.234,00", "%'.2f", 1234.00); 192 testfmt("123.456,789", "%'.3f", 123456.789); 193 194 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 195 testfmt("12345678.062500", "%'f", 12345678.0625); 196 testfmt("9000.000000", "%'f", 9000.0); 197} 198 199ATF_TC_WITHOUT_HEAD(signed_conversions); 200ATF_TC_BODY(signed_conversions, tc) 201{ 202 203 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 204 205 testfmt("+2.500000e-01", "%+e", 0.25); 206 testfmt("+0.000000", "%+F", 0.0); 207 testfmt("-1", "%+g", -1.0); 208 209 testfmt("-1.000000e+00", "% e", -1.0); 210 testfmt("+1.000000", "% +f", 1.0); 211 testfmt(" 1", "% g", 1.0); 212 testfmt(" 0", "% g", 0.0); 213} 214 215ATF_TC_WITHOUT_HEAD(alternate_form); 216ATF_TC_BODY(alternate_form, tc) 217{ 218 219 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 220 221 testfmt("1.250e+00", "%#.3e", 1.25); 222 testfmt("123.000000", "%#f", 123.0); 223 testfmt(" 12345.", "%#7.5g", 12345.0); 224 testfmt(" 1.00000", "%#8g", 1.0); 225 testfmt("0.0", "%#.2g", 0.0); 226} 227 228ATF_TC_WITHOUT_HEAD(padding_and_decimal_point_placement); 229ATF_TC_BODY(padding_and_decimal_point_placement, tc) 230{ 231 232 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 233 234 testfmt("03.2E+00", "%08.1E", 3.25); 235 testfmt("003.25", "%06.2F", 3.25); 236 testfmt("0003.25", "%07.4G", 3.25); 237 238 testfmt("3.14159e-05", "%g", 3.14159e-5); 239 testfmt("0.000314159", "%g", 3.14159e-4); 240 testfmt("3.14159e+06", "%g", 3.14159e6); 241 testfmt("314159", "%g", 3.14159e5); 242 testfmt("314159.", "%#g", 3.14159e5); 243 244 testfmt(" 9.000000e+03", "%13e", 9000.0); 245 testfmt(" 9000.000000", "%12f", 9000.0); 246 testfmt(" 9000", "%5g", 9000.0); 247 testfmt(" 900000.", "%#8g", 900000.0); 248 testfmt(" 9e+06", "%6g", 9000000.0); 249 testfmt(" 9.000000e-04", "%13e", 0.0009); 250 testfmt(" 0.000900", "%9f", 0.0009); 251 testfmt(" 0.0009", "%7g", 0.0009); 252 testfmt(" 9e-05", "%6g", 0.00009); 253 testfmt(" 9.00000e-05", "%#12g", 0.00009); 254 testfmt(" 9.e-05", "%#7.1g", 0.00009); 255 256 testfmt(" 0.0", "%4.1f", 0.0); 257 testfmt("90.0", "%4.1f", 90.0); 258 testfmt(" 100", "%4.0f", 100.0); 259 testfmt("9.0e+01", "%4.1e", 90.0); 260 testfmt("1e+02", "%4.0e", 100.0); 261} 262 263ATF_TC_WITHOUT_HEAD(decimal_rounding); 264ATF_TC_BODY(decimal_rounding, tc) 265{ 266 267 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 268 269 fesetround(FE_DOWNWARD); 270 testfmt("4.437", "%.3f", 4.4375); 271 testfmt("-4.438", "%.3f", -4.4375); 272 testfmt("4.437", "%.3Lf", 4.4375L); 273 testfmt("-4.438", "%.3Lf", -4.4375L); 274 275 fesetround(FE_UPWARD); 276 testfmt("4.438", "%.3f", 4.4375); 277 testfmt("-4.437", "%.3f", -4.4375); 278 testfmt("4.438", "%.3Lf", 4.4375L); 279 testfmt("-4.437", "%.3Lf", -4.4375L); 280 281 fesetround(FE_TOWARDZERO); 282 testfmt("4.437", "%.3f", 4.4375); 283 testfmt("-4.437", "%.3f", -4.4375); 284 testfmt("4.437", "%.3Lf", 4.4375L); 285 testfmt("-4.437", "%.3Lf", -4.4375L); 286 287 fesetround(FE_TONEAREST); 288 testfmt("4.438", "%.3f", 4.4375); 289 testfmt("-4.438", "%.3f", -4.4375); 290 testfmt("4.438", "%.3Lf", 4.4375L); 291 testfmt("-4.438", "%.3Lf", -4.4375L); 292} 293 294ATF_TC_WITHOUT_HEAD(hexadecimal_floating_point); 295ATF_TC_BODY(hexadecimal_floating_point, tc) 296{ 297 298 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 299 300 /* 301 * Hexadecimal floating point (%a, %A) tests. Some of these 302 * are only valid if the implementation converts to hex digits 303 * on nibble boundaries. 304 */ 305 testfmt("0x0p+0", "%a", 0x0.0p0); 306 testfmt("0X0.P+0", "%#LA", 0x0.0p0L); 307 testfmt("inf", "%La", (long double)INFINITY); 308 testfmt("+INF", "%+A", INFINITY); 309 testfmt("nan", "%La", (long double)NAN); 310 testfmt("NAN", "%A", NAN); 311 312 testfmt(" 0x1.23p+0", "%10a", 0x1.23p0); 313 testfmt(" 0x1.23p-500", "%12a", 0x1.23p-500); 314 testfmt(" 0x1.2p+40", "%10.1a", 0x1.23p40); 315 testfmt(" 0X1.230000000000000000000000P-4", "%32.24A", 0x1.23p-4); 316 testfmt("0x1p-1074", "%a", 0x1p-1074); 317 testfmt("0x1.2345p-1024", "%a", 0x1.2345p-1024); 318 319#if (LDBL_MANT_DIG == 64) && !defined(__i386__) 320 testfmt("0x1.921fb54442d18468p+1", "%La", 0x3.243f6a8885a308dp0L); 321 testfmt("0x1p-16445", "%La", 0x1p-16445L); 322 testfmt("0x1.30ecap-16381", "%La", 0x9.8765p-16384L); 323#elif (LDBL_MANT_DIG == 113) 324 testfmt("0x1.921fb54442d18469898cc51701b8p+1", "%La", 325 0x3.243f6a8885a308d313198a2e037p0L); 326 testfmt("0x1p-16494", "%La", 0x1p-16494L); 327 testfmt("0x1.2345p-16384", "%La", 0x1.2345p-16384L); 328#else 329 testfmt("0x1.921fb54442d18p+1", "%La", 0x3.243f6a8885a31p0L); 330 testfmt("0x1p-1074", "%La", 0x1p-1074L); 331 testfmt("0x1.30ecap-1021", "%La", 0x9.8765p-1024L); 332#endif 333} 334 335ATF_TC_WITHOUT_HEAD(hexadecimal_rounding); 336ATF_TC_BODY(hexadecimal_rounding, tc) 337{ 338 339 ATF_REQUIRE(setlocale(LC_NUMERIC, "C")); 340 341 fesetround(FE_TOWARDZERO); 342 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 343 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 344 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 345 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 346 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 347 348 fesetround(FE_DOWNWARD); 349 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 350 testfmt("-0x1.23457p+0", "%.5a", -0x1.23456789abcdep0); 351 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 352 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 353 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 354 355 fesetround(FE_UPWARD); 356 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 357 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 358 testfmt("0x1.23457p+0", "%.5a", 0x1.23456789abcdep0); 359 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 360 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 361 362 fesetround(FE_TONEAREST); 363 testfmt("0x1.23456789abcdep+4", "%a", 0x1.23456789abcdep4); 364 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 365 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 366 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 367 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 368 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 369 testfmt("0x1.00p-1029", "%.2a", 0x1.fffp-1030); 370 testfmt("0x1.00p-1026", "%.2a", 0xf.fffp-1030); 371 testfmt("0x1.83p+0", "%.2a", 1.51); 372} 373 374ATF_TP_ADD_TCS(tp) 375{ 376 377 ATF_TP_ADD_TC(tp, float_within_limits); 378 ATF_TP_ADD_TC(tp, infinities_and_nans); 379 ATF_TP_ADD_TC(tp, padding); 380 ATF_TP_ADD_TC(tp, precision_specifiers); 381 ATF_TP_ADD_TC(tp, thousands_separator_and_other_locale_tests); 382 ATF_TP_ADD_TC(tp, signed_conversions); 383 ATF_TP_ADD_TC(tp, alternate_form); 384 ATF_TP_ADD_TC(tp, padding_and_decimal_point_placement); 385 ATF_TP_ADD_TC(tp, decimal_rounding); 386 ATF_TP_ADD_TC(tp, hexadecimal_floating_point); 387 ATF_TP_ADD_TC(tp, hexadecimal_rounding); 388 389 return (atf_no_error()); 390} 391