printfloat_test.c revision 230114
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/tools/regression/lib/libc/stdio/test-printfloat.c 230114 2012-01-14 21:09:54Z das $"); 33 34#include <assert.h> 35#include <err.h> 36#include <fenv.h> 37#include <float.h> 38#include <locale.h> 39#include <math.h> 40#include <stdio.h> 41#include <stdarg.h> 42#include <stdint.h> 43#include <stdlib.h> 44#include <string.h> 45#include <wchar.h> 46 47#define testfmt(result, fmt, ...) \ 48 _testfmt((result), __LINE__, #__VA_ARGS__, fmt, __VA_ARGS__) 49void _testfmt(const char *, int, const char *, const char *, ...); 50void smash_stack(void); 51 52int 53main(int argc, char *argv[]) 54{ 55 56 printf("1..11\n"); 57 assert(setlocale(LC_NUMERIC, "C")); 58 59 /* 60 * Basic tests of decimal output functionality. 61 */ 62 testfmt(" 1.000000E+00", "%13E", 1.0); 63 testfmt(" 1.000000", "%13f", 1.0); 64 testfmt(" 1", "%13G", 1.0); 65 testfmt(" 1.000000E+00", "%13LE", 1.0L); 66 testfmt(" 1.000000", "%13Lf", 1.0L); 67 testfmt(" 1", "%13LG", 1.0L); 68 69 testfmt("2.718282", "%.*f", -2, 2.7182818); 70 71 testfmt("1.234568e+06", "%e", 1234567.8); 72 testfmt("1234567.800000", "%f", 1234567.8); 73 testfmt("1.23457E+06", "%G", 1234567.8); 74 testfmt("1.234568e+06", "%Le", 1234567.8L); 75 testfmt("1234567.800000", "%Lf", 1234567.8L); 76 testfmt("1.23457E+06", "%LG", 1234567.8L); 77 78#if (LDBL_MANT_DIG > DBL_MANT_DIG) && !defined(__i386__) 79 testfmt("123456789.864210", "%Lf", 123456789.8642097531L); 80 testfmt("-1.23457E+08", "%LG", -123456789.8642097531L); 81 testfmt("123456789.8642097531", "%.10Lf", 123456789.8642097531L); 82 testfmt(" 3.141592653589793238e-4000", "%L27.18Le", 83 3.14159265358979323846e-4000L); 84#endif 85 86 printf("ok 1 - printfloat\n"); 87 88 /* 89 * Infinities and NaNs 90 */ 91 testfmt("nan", "%e", NAN); 92 testfmt("NAN", "%F", NAN); 93 testfmt("nan", "%g", NAN); 94 testfmt("NAN", "%LE", (long double)NAN); 95 testfmt(" nan", "%05e", NAN); 96 97 testfmt("INF", "%E", HUGE_VAL); 98 testfmt("-inf", "%f", -HUGE_VAL); 99 testfmt("+inf", "%+g", HUGE_VAL); 100 testfmt(" inf", "%4.2Le", HUGE_VALL); 101 testfmt("-inf", "%Lf", -HUGE_VALL); 102 testfmt(" inf", "%05e", HUGE_VAL); 103 testfmt(" -inf", "%05e", -HUGE_VAL); 104 105 printf("ok 2 - printfloat\n"); 106 107 /* 108 * Padding 109 */ 110 testfmt("0.000000e+00", "%e", 0.0); 111 testfmt("0.000000", "%F", (double)0.0); 112 testfmt("0", "%G", 0.0); 113 testfmt(" 0", "%3.0Lg", 0.0L); 114 testfmt(" 0", "%5.0f", 0.001); 115 printf("ok 3 - printfloat\n"); 116 117 /* 118 * Precision specifiers 119 */ 120 testfmt("1.0123e+00", "%.4e", 1.0123456789); 121 testfmt("1.0123", "%.4f", 1.0123456789); 122 testfmt("1.012", "%.4g", 1.0123456789); 123 testfmt("1.2346e-02", "%.4e", 0.0123456789); 124 testfmt("0.0123", "%.4f", 0.0123456789); 125 testfmt("0.01235", "%.4g", 0.0123456789); 126 printf("ok 4 - printfloat\n"); 127 128 /* 129 * Thousands' separators and other locale fun 130 */ 131 testfmt("12345678.0625", "%'.04f", 12345678.0625); 132 testfmt("0012345678.0625", "%'015.4F", 12345678.0625); 133 134 assert(setlocale(LC_NUMERIC, "hi_IN.ISCII-DEV")); /* grouping == 2;3 */ 135 testfmt("123,456,78.0625", "%'.4f", 12345678.0625); 136 testfmt("00123,456,78.0625", "%'017.4F", 12345678.0625); 137 testfmt(" 90,00", "%'6.0f", 9000.0); 138 testfmt("90,00.0", "%'.1f", 9000.0); 139 140 assert(setlocale(LC_NUMERIC, "ru_RU.ISO8859-5")); /* decimalpoint==, */ 141 testfmt("3,1415", "%g", 3.1415); 142 143 /* thousands=. decimalpoint=, grouping=3;3 */ 144 assert(setlocale(LC_NUMERIC, "el_GR.ISO8859-7")); /* decimalpoint==, */ 145 testfmt("1.234,00", "%'.2f", 1234.00); 146 testfmt("123.456,789", "%'.3f", 123456.789); 147 148 assert(setlocale(LC_NUMERIC, "C")); 149 testfmt("12345678.062500", "%'f", 12345678.0625); 150 testfmt("9000.000000", "%'f", 9000.0); 151 152 printf("ok 5 - printfloat\n"); 153 154 /* 155 * Signed conversions 156 */ 157 testfmt("+2.500000e-01", "%+e", 0.25); 158 testfmt("+0.000000", "%+F", 0.0); 159 testfmt("-1", "%+g", -1.0); 160 161 testfmt("-1.000000e+00", "% e", -1.0); 162 testfmt("+1.000000", "% +f", 1.0); 163 testfmt(" 1", "% g", 1.0); 164 testfmt(" 0", "% g", 0.0); 165 166 printf("ok 6 - printfloat\n"); 167 168 /* 169 * ``Alternate form'' 170 */ 171 testfmt("1.250e+00", "%#.3e", 1.25); 172 testfmt("123.000000", "%#f", 123.0); 173 testfmt(" 12345.", "%#7.5g", 12345.0); 174 testfmt(" 1.00000", "%#8g", 1.0); 175 testfmt("0.0", "%#.2g", 0.0); 176 printf("ok 7 - printfloat\n"); 177 178 /* 179 * Padding and decimal point placement 180 */ 181 testfmt("03.2E+00", "%08.1E", 3.25); 182 testfmt("003.25", "%06.2F", 3.25); 183 testfmt("0003.25", "%07.4G", 3.25); 184 185 testfmt("3.14159e-05", "%g", 3.14159e-5); 186 testfmt("0.000314159", "%g", 3.14159e-4); 187 testfmt("3.14159e+06", "%g", 3.14159e6); 188 testfmt("314159", "%g", 3.14159e5); 189 testfmt("314159.", "%#g", 3.14159e5); 190 191 testfmt(" 9.000000e+03", "%13e", 9000.0); 192 testfmt(" 9000.000000", "%12f", 9000.0); 193 testfmt(" 9000", "%5g", 9000.0); 194 testfmt(" 900000.", "%#8g", 900000.0); 195 testfmt(" 9e+06", "%6g", 9000000.0); 196 testfmt(" 9.000000e-04", "%13e", 0.0009); 197 testfmt(" 0.000900", "%9f", 0.0009); 198 testfmt(" 0.0009", "%7g", 0.0009); 199 testfmt(" 9e-05", "%6g", 0.00009); 200 testfmt(" 9.00000e-05", "%#12g", 0.00009); 201 testfmt(" 9.e-05", "%#7.1g", 0.00009); 202 203 testfmt(" 0.0", "%4.1f", 0.0); 204 testfmt("90.0", "%4.1f", 90.0); 205 testfmt(" 100", "%4.0f", 100.0); 206 testfmt("9.0e+01", "%4.1e", 90.0); 207 testfmt("1e+02", "%4.0e", 100.0); 208 209 printf("ok 8 - printfloat\n"); 210 211 /* 212 * Decimal rounding 213 */ 214 fesetround(FE_DOWNWARD); 215 testfmt("4.437", "%.3f", 4.4375); 216 testfmt("-4.438", "%.3f", -4.4375); 217 testfmt("4.437", "%.3Lf", 4.4375L); 218 testfmt("-4.438", "%.3Lf", -4.4375L); 219 220 fesetround(FE_UPWARD); 221 testfmt("4.438", "%.3f", 4.4375); 222 testfmt("-4.437", "%.3f", -4.4375); 223 testfmt("4.438", "%.3Lf", 4.4375L); 224 testfmt("-4.437", "%.3Lf", -4.4375L); 225 226 fesetround(FE_TOWARDZERO); 227 testfmt("4.437", "%.3f", 4.4375); 228 testfmt("-4.437", "%.3f", -4.4375); 229 testfmt("4.437", "%.3Lf", 4.4375L); 230 testfmt("-4.437", "%.3Lf", -4.4375L); 231 232 fesetround(FE_TONEAREST); 233 testfmt("4.438", "%.3f", 4.4375); 234 testfmt("-4.438", "%.3f", -4.4375); 235 testfmt("4.438", "%.3Lf", 4.4375L); 236 testfmt("-4.438", "%.3Lf", -4.4375L); 237 238 printf("ok 9 - printfloat\n"); 239 240 /* 241 * Hexadecimal floating point (%a, %A) tests. Some of these 242 * are only valid if the implementation converts to hex digits 243 * on nibble boundaries. 244 */ 245 testfmt("0x0p+0", "%a", 0x0.0p0); 246 testfmt("0X0.P+0", "%#LA", 0x0.0p0L); 247 testfmt("inf", "%La", (long double)INFINITY); 248 testfmt("+INF", "%+A", INFINITY); 249 testfmt("nan", "%La", (long double)NAN); 250 testfmt("NAN", "%A", NAN); 251 252 testfmt(" 0x1.23p+0", "%10a", 0x1.23p0); 253 testfmt(" 0x1.23p-500", "%12a", 0x1.23p-500); 254 testfmt(" 0x1.2p+40", "%10.1a", 0x1.23p40); 255 testfmt(" 0X1.230000000000000000000000P-4", "%32.24A", 0x1.23p-4); 256 testfmt("0x1p-1074", "%a", 0x1p-1074); 257 testfmt("0x1.2345p-1024", "%a", 0x1.2345p-1024); 258 259#if (LDBL_MANT_DIG == 64) && !defined(__i386__) 260 testfmt("0x1.921fb54442d18468p+1", "%La", 0x3.243f6a8885a308dp0L); 261 testfmt("0x1p-16445", "%La", 0x1p-16445L); 262 testfmt("0x1.30ecap-16381", "%La", 0x9.8765p-16384L); 263#elif (LDBL_MANT_DIG == 113) 264 testfmt("0x1.921fb54442d18469898cc51701b8p+1", "%La", 265 0x3.243f6a8885a308d313198a2e037p0L); 266 testfmt("0x1p-16494", "%La", 0x1p-16494L); 267 testfmt("0x1.2345p-16384", "%La", 0x1.2345p-16384L); 268#else 269 testfmt("0x1.921fb54442d18p+1", "%La", 0x3.243f6a8885a31p0L); 270 testfmt("0x1p-1074", "%La", 0x1p-1074L); 271 testfmt("0x1.30ecap-1021", "%La", 0x9.8765p-1024L); 272#endif 273 274 printf("ok 10 - printfloat\n"); 275 276 /* 277 * Hexadecimal rounding 278 */ 279 fesetround(FE_TOWARDZERO); 280 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 281 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 282 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 283 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 284 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 285 286 fesetround(FE_DOWNWARD); 287 testfmt("0X1.23456789ABCP+0", "%.11A", 0x1.23456789abcdep0); 288 testfmt("-0x1.23457p+0", "%.5a", -0x1.23456789abcdep0); 289 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 290 testfmt("0x1.234567p+0", "%.6a", 0x1.23456789abcdep0); 291 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 292 293 fesetround(FE_UPWARD); 294 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 295 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 296 testfmt("0x1.23457p+0", "%.5a", 0x1.23456789abcdep0); 297 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 298 testfmt("-0x1.234566p+0", "%.6a", -0x1.23456689abcdep0); 299 300 fesetround(FE_TONEAREST); 301 testfmt("0x1.23456789abcdep+4", "%a", 0x1.23456789abcdep4); 302 testfmt("0X1.23456789ABDP+0", "%.11A", 0x1.23456789abcdep0); 303 testfmt("-0x1.23456p+0", "%.5a", -0x1.23456789abcdep0); 304 testfmt("0x1.23456p+0", "%.5a", 0x1.23456789abcdep0); 305 testfmt("0x1.234568p+0", "%.6a", 0x1.23456789abcdep0); 306 testfmt("-0x1.234567p+0", "%.6a", -0x1.23456689abcdep0); 307 testfmt("0x1.00p-1029", "%.2a", 0x1.fffp-1030); 308 testfmt("0x1.00p-1026", "%.2a", 0xf.fffp-1030); 309 testfmt("0x1.83p+0", "%.2a", 1.51); 310 311 printf("ok 11 - printfloat\n"); 312 313 return (0); 314} 315 316void 317smash_stack(void) 318{ 319 static uint32_t junk = 0xdeadbeef; 320 uint32_t buf[512]; 321 int i; 322 323 for (i = 0; i < sizeof(buf) / sizeof(buf[0]); i++) 324 buf[i] = junk; 325} 326 327void 328_testfmt(const char *result, int line, const char *argstr, const char *fmt,...) 329{ 330#define BUF 100 331 wchar_t ws[BUF], wfmt[BUF], wresult[BUF]; 332 char s[BUF]; 333 va_list ap, ap2; 334 335 va_start(ap, fmt); 336 va_copy(ap2, ap); 337 smash_stack(); 338 vsnprintf(s, sizeof(s), fmt, ap); 339 if (strcmp(result, s) != 0) { 340 fprintf(stderr, 341 "%d: printf(\"%s\", %s) ==> [%s], expected [%s]\n", 342 line, fmt, argstr, s, result); 343 abort(); 344 } 345 346 smash_stack(); 347 mbstowcs(ws, s, BUF - 1); 348 mbstowcs(wfmt, fmt, BUF - 1); 349 mbstowcs(wresult, result, BUF - 1); 350 vswprintf(ws, sizeof(ws) / sizeof(ws[0]), wfmt, ap2); 351 if (wcscmp(wresult, ws) != 0) { 352 fprintf(stderr, 353 "%d: wprintf(\"%ls\", %s) ==> [%ls], expected [%ls]\n", 354 line, wfmt, argstr, ws, wresult); 355 abort(); 356 } 357} 358