dlls/msvcrt/tests/printf.c

   1 /*
   2  * Conformance tests for *printf functions.
   3  *
   4  * Copyright 2002 Uwe Bonnes
   5  * Copyright 2004 Aneurin Price
   6  * Copyright 2005 Mike McCormack
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /* With Visual Studio >= 2005,  swprintf() takes an extra parameter unless
  24  * the following macro is defined.
  25  */
  26 #define _CRT_NON_CONFORMING_SWPRINTFS
  27
  28 #include <stdio.h>
  29
  30 #include "wine/test.h"
  31
  32 static void test_sprintf( void )
  33 {
  34     char buffer[100];
  35     const char *format;
  36     double pnumber=789456123;
  37     int x, r;
  38     WCHAR wide[] = { 'w','i','d','e',0};
  39
  40     format = "%+#23.15e";
  41     r = sprintf(buffer,format,pnumber);
  42     todo_wine {
  43     ok(!strcmp(buffer,"+7.894561230000000e+008"),"exponent format incorrect\n");
  44     }
  45     ok( r==23, "return count wrong\n");
  46
  47     format = "%I64d";
  48     r = sprintf(buffer,format,((ULONGLONG)0xffffffff)*0xffffffff);
  49     ok(!strcmp(buffer,"-8589934591"),"Problem with long long\n");
  50     ok( r==11, "return count wrong\n");
  51
  52     format = "%+8I64d";
  53     r = sprintf(buffer,format,(LONGLONG)100);
  54     ok(!strcmp(buffer,"    +100") && r==8,"+8I64d failed: '%s'\n", buffer);
  55
  56     format = "%+.8I64d";
  57     r = sprintf(buffer,format,(LONGLONG)100);
  58     ok(!strcmp(buffer,"+00000100") && r==9,"+.8I64d failed: '%s'\n", buffer);
  59
  60     format = "%+10.8I64d";
  61     r = sprintf(buffer,format,(LONGLONG)100);
  62     ok(!strcmp(buffer," +00000100") && r==10,"+10.8I64d failed: '%s'\n", buffer);
  63     format = "%_1I64d";
  64     r = sprintf(buffer,format,(LONGLONG)100);
  65     ok(!strcmp(buffer,"_1I64d") && r==6,"_1I64d failed\n");
  66
  67     format = "%-1.5I64d";
  68     r = sprintf(buffer,format,(LONGLONG)-100);
  69     ok(!strcmp(buffer,"-00100") && r==6,"-1.5I64d failed: '%s'\n", buffer);
  70
  71     format = "%5I64d";
  72     r = sprintf(buffer,format,(LONGLONG)100);
  73     ok(!strcmp(buffer,"  100") && r==5,"5I64d failed: '%s'\n", buffer);
  74
  75     format = "%5I64d";
  76     r = sprintf(buffer,format,(LONGLONG)-100);
  77     ok(!strcmp(buffer," -100") && r==5,"5I64d failed: '%s'\n", buffer);
  78
  79     format = "%-5I64d";
  80     r = sprintf(buffer,format,(LONGLONG)100);
  81     ok(!strcmp(buffer,"100  ") && r==5,"-5I64d failed: '%s'\n", buffer);
  82
  83     format = "%-5I64d";
  84     r = sprintf(buffer,format,(LONGLONG)-100);
  85     ok(!strcmp(buffer,"-100 ") && r==5,"-5I64d failed: '%s'\n", buffer);
  86
  87     format = "%-.5I64d";
  88     r = sprintf(buffer,format,(LONGLONG)100);
  89     ok(!strcmp(buffer,"00100") && r==5,"-.5I64d failed: '%s'\n", buffer);
  90
  91     format = "%-.5I64d";
  92     r = sprintf(buffer,format,(LONGLONG)-100);
  93     ok(!strcmp(buffer,"-00100") && r==6,"-.5I64d failed: '%s'\n", buffer);
  94
  95     format = "%-8.5I64d";
  96     r = sprintf(buffer,format,(LONGLONG)100);
  97     ok(!strcmp(buffer,"00100   ") && r==8,"-8.5I64d failed: '%s'\n", buffer);
  98
  99     format = "%-8.5I64d";
 100     r = sprintf(buffer,format,(LONGLONG)-100);
 101     ok(!strcmp(buffer,"-00100  ") && r==8,"-8.5I64d failed: '%s'\n", buffer);
 102
 103     format = "%05I64d";
 104     r = sprintf(buffer,format,(LONGLONG)100);
 105     ok(!strcmp(buffer,"00100") && r==5,"05I64d failed: '%s'\n", buffer);
 106
 107     format = "%05I64d";
 108     r = sprintf(buffer,format,(LONGLONG)-100);
 109     ok(!strcmp(buffer,"-0100") && r==5,"05I64d failed: '%s'\n", buffer);
 110
 111     format = "% I64d";
 112     r = sprintf(buffer,format,(LONGLONG)100);
 113     ok(!strcmp(buffer," 100") && r==4,"' I64d' failed: '%s'\n", buffer);
 114
 115     format = "% I64d";
 116     r = sprintf(buffer,format,(LONGLONG)-100);
 117     ok(!strcmp(buffer,"-100") && r==4,"' I64d' failed: '%s'\n", buffer);
 118
 119     format = "% 5I64d";
 120     r = sprintf(buffer,format,(LONGLONG)100);
 121     ok(!strcmp(buffer,"  100") && r==5,"' 5I64d' failed: '%s'\n", buffer);
 122
 123     format = "% 5I64d";
 124     r = sprintf(buffer,format,(LONGLONG)-100);
 125     ok(!strcmp(buffer," -100") && r==5,"' 5I64d' failed: '%s'\n", buffer);
 126
 127     format = "% .5I64d";
 128     r = sprintf(buffer,format,(LONGLONG)100);
 129     ok(!strcmp(buffer," 00100") && r==6,"' .5I64d' failed: '%s'\n", buffer);
 130
 131     format = "% .5I64d";
 132     r = sprintf(buffer,format,(LONGLONG)-100);
 133     ok(!strcmp(buffer,"-00100") && r==6,"' .5I64d' failed: '%s'\n", buffer);
 134
 135     format = "% 8.5I64d";
 136     r = sprintf(buffer,format,(LONGLONG)100);
 137     ok(!strcmp(buffer,"   00100") && r==8,"' 8.5I64d' failed: '%s'\n", buffer);
 138
 139     format = "% 8.5I64d";
 140     r = sprintf(buffer,format,(LONGLONG)-100);
 141     ok(!strcmp(buffer,"  -00100") && r==8,"' 8.5I64d' failed: '%s'\n", buffer);
 142
 143     format = "%.0I64d";
 144     r = sprintf(buffer,format,(LONGLONG)0);
 145     ok(r==0,".0I64d failed: '%s'\n", buffer);
 146
 147     format = "%#+21.18I64x";
 148     r = sprintf(buffer,format,(LONGLONG)-100);
 149     ok(!strcmp(buffer," 0x00ffffffffffffff9c") && r==21,"#+21.18I64x failed: '%s'\n", buffer);
 150
 151     format = "%#.25I64o";
 152     r = sprintf(buffer,format,(LONGLONG)-100);
 153     ok(!strcmp(buffer,"0001777777777777777777634") && r==25,"#.25I64o failed: '%s'\n", buffer);
 154
 155     format = "%#+24.20I64o";
 156     r = sprintf(buffer,format,(LONGLONG)-100);
 157     ok(!strcmp(buffer," 01777777777777777777634") && r==24,"#+24.20I64o failed: '%s'\n", buffer);
 158
 159     format = "%#+18.21I64X";
 160     r = sprintf(buffer,format,(LONGLONG)-100);
 161     ok(!strcmp(buffer,"0X00000FFFFFFFFFFFFFF9C") && r==23,"#+18.21I64X failed: '%s '\n", buffer);
 162
 163     format = "%#+20.24I64o";
 164     r = sprintf(buffer,format,(LONGLONG)-100);
 165     ok(!strcmp(buffer,"001777777777777777777634") && r==24,"#+20.24I64o failed: '%s'\n", buffer);
 166
 167     format = "%#+25.22I64u";
 168     r = sprintf(buffer,format,(LONGLONG)-1);
 169     ok(!strcmp(buffer,"   0018446744073709551615") && r==25,"#+25.22I64u conversion failed: '%s'\n", buffer);
 170
 171     format = "%#+25.22I64u";
 172     r = sprintf(buffer,format,(LONGLONG)-1);
 173     ok(!strcmp(buffer,"   0018446744073709551615") && r==25,"#+25.22I64u failed: '%s'\n", buffer);
 174
 175     format = "%#+30.25I64u";
 176     r = sprintf(buffer,format,(LONGLONG)-1);
 177     ok(!strcmp(buffer,"     0000018446744073709551615") && r==30,"#+30.25I64u failed: '%s'\n", buffer);
 178
 179     format = "%+#25.22I64d";
 180     r = sprintf(buffer,format,(LONGLONG)-1);
 181     ok(!strcmp(buffer,"  -0000000000000000000001") && r==25,"+#25.22I64d failed: '%s'\n", buffer);
 182
 183     format = "%#-8.5I64o";
 184     r = sprintf(buffer,format,(LONGLONG)100);
 185     ok(!strcmp(buffer,"00144   ") && r==8,"-8.5I64o failed: '%s'\n", buffer);
 186
 187     format = "%#-+ 08.5I64d";
 188     r = sprintf(buffer,format,(LONGLONG)100);
 189     ok(!strcmp(buffer,"+00100  ") && r==8,"'#-+ 08.5I64d failed: '%s'\n", buffer);
 190
 191     format = "%#-+ 08.5I64d";
 192     r = sprintf(buffer,format,(LONGLONG)100);
 193     ok(!strcmp(buffer,"+00100  ") && r==8,"#-+ 08.5I64d failed: '%s'\n", buffer);
 194
 195     format = "%.80I64d";
 196     r = sprintf(buffer,format,(LONGLONG)1);
 197     ok(r==80,"%s format failed\n", format);
 198
 199     format = "% .80I64d";
 200     r = sprintf(buffer,format,(LONGLONG)1);
 201     ok(r==81,"%s format failed\n", format);
 202
 203     format = "% .80d";
 204     r = sprintf(buffer,format,1);
 205     ok(r==81,"%s format failed\n", format);
 206
 207     format = "%lld";
 208     r = sprintf(buffer,format,((ULONGLONG)0xffffffff)*0xffffffff);
 209     ok(!strcmp(buffer, "1"), "Problem with \"ll\" interpretation\n");
 210     ok( r==1, "return count wrong\n");
 211
 212     format = "%I";
 213     r = sprintf(buffer,format,1);
 214     ok(!strcmp(buffer, "I"), "Problem with \"I\" interpretation\n");
 215     ok( r==1, "return count wrong\n");
 216
 217     format = "%I0d";
 218     r = sprintf(buffer,format,1);
 219     ok(!strcmp(buffer,"I0d"),"I0d failed\n");
 220     ok( r==3, "return count wrong\n");
 221
 222     format = "%I32d";
 223     r = sprintf(buffer,format,1);
 224     ok(!strcmp(buffer,"1"),"I32d failed\n");
 225     ok( r==1, "return count wrong\n");
 226
 227     format = "%I64D";
 228     r = sprintf(buffer,format,(LONGLONG)-1);
 229     ok(!strcmp(buffer,"D"),"I64D failed: %s\n",buffer);
 230     ok( r==1, "return count wrong\n");
 231
 232     format = "% d";
 233     r = sprintf(buffer,format,1);
 234     ok(!strcmp(buffer, " 1"),"Problem with sign place-holder: '%s'\n",buffer);
 235     ok( r==2, "return count wrong\n");
 236
 237     format = "%+ d";
 238     r = sprintf(buffer,format,1);
 239     ok(!strcmp(buffer, "+1"),"Problem with sign flags: '%s'\n",buffer);
 240     ok( r==2, "return count wrong\n");
 241
 242     format = "%S";
 243     r = sprintf(buffer,format,wide);
 244     ok(!strcmp(buffer,"wide"),"Problem with wide string format\n");
 245     ok( r==4, "return count wrong\n");
 246
 247     format = "%04c";
 248     r = sprintf(buffer,format,'1');
 249     ok(!strcmp(buffer,"0001"),"Character not zero-prefixed \"%s\"\n",buffer);
 250     ok( r==4, "return count wrong\n");
 251
 252     format = "%-04c";
 253     r = sprintf(buffer,format,'1');
 254     ok(!strcmp(buffer,"1   "),"Character zero-padded and/or not left-adjusted \"%s\"\n",buffer);
 255     ok( r==4, "return count wrong\n");
 256
 257     format = "%p";
 258     r = sprintf(buffer,format,(void *)57);
 259     ok(!strcmp(buffer,"00000039"),"Pointer formatted incorrectly \"%s\"\n",buffer);
 260     ok( r==8, "return count wrong\n");
 261
 262     format = "%#012p";
 263     r = sprintf(buffer,format,(void *)57);
 264     ok(!strcmp(buffer,"  0X00000039"),"Pointer formatted incorrectly\n");
 265     ok( r==12, "return count wrong\n");
 266
 267     format = "%Fp";
 268     r = sprintf(buffer,format,(void *)57);
 269     ok(!strcmp(buffer,"00000039"),"Pointer formatted incorrectly \"%s\"\n",buffer);
 270     ok( r==8, "return count wrong\n");
 271
 272     format = "%04s";
 273     r = sprintf(buffer,format,"foo");
 274     ok(!strcmp(buffer,"0foo"),"String not zero-prefixed \"%s\"\n",buffer);
 275     ok( r==4, "return count wrong\n");
 276
 277     format = "%.1s";
 278     r = sprintf(buffer,format,"foo");
 279     ok(!strcmp(buffer,"f"),"Precision ignored \"%s\"\n",buffer);
 280     ok( r==1, "return count wrong\n");
 281
 282     format = "%.*s";
 283     r = sprintf(buffer,format,1,"foo");
 284     ok(!strcmp(buffer,"f"),"Precision ignored \"%s\"\n",buffer);
 285     ok( r==1, "return count wrong\n");
 286
 287     format = "%*s";
 288     r = sprintf(buffer,format,-5,"foo");
 289     ok(!strcmp(buffer,"foo  "),"Negative field width ignored \"%s\"\n",buffer);
 290     ok( r==5, "return count wrong\n");
 291
 292     format = "%#-012p";
 293     r = sprintf(buffer,format,(void *)57);
 294     ok(!strcmp(buffer,"0X00000039  "),"Pointer formatted incorrectly\n");
 295     ok( r==12, "return count wrong\n");
 296
 297     format = "hello";
 298     r = sprintf(buffer, format);
 299     ok(!strcmp(buffer,"hello"), "failed\n");
 300     ok( r==5, "return count wrong\n");
 301
 302     format = "%ws";
 303     r = sprintf(buffer, format, wide);
 304     ok(!strcmp(buffer,"wide"), "failed\n");
 305     ok( r==4, "return count wrong\n");
 306
 307     format = "%-10ws";
 308     r = sprintf(buffer, format, wide );
 309     ok(!strcmp(buffer,"wide      "), "failed\n");
 310     ok( r==10, "return count wrong\n");
 311
 312     format = "%10ws";
 313     r = sprintf(buffer, format, wide );
 314     ok(!strcmp(buffer,"      wide"), "failed\n");
 315     ok( r==10, "return count wrong\n");
 316
 317     format = "%#+ -03whlls";
 318     r = sprintf(buffer, format, wide );
 319     ok(!strcmp(buffer,"wide"), "failed\n");
 320     ok( r==4, "return count wrong\n");
 321
 322     format = "%w0s";
 323     r = sprintf(buffer, format, wide );
 324     ok(!strcmp(buffer,"0s"), "failed\n");
 325     ok( r==2, "return count wrong\n");
 326
 327     format = "%w-s";
 328     r = sprintf(buffer, format, wide );
 329     ok(!strcmp(buffer,"-s"), "failed\n");
 330     ok( r==2, "return count wrong\n");
 331
 332     format = "%ls";
 333     r = sprintf(buffer, format, wide );
 334     ok(!strcmp(buffer,"wide"), "failed\n");
 335     ok( r==4, "return count wrong\n");
 336
 337     format = "%Ls";
 338     r = sprintf(buffer, format, "not wide" );
 339     ok(!strcmp(buffer,"not wide"), "failed\n");
 340     ok( r==8, "return count wrong\n");
 341
 342     format = "%b";
 343     r = sprintf(buffer, format);
 344     ok(!strcmp(buffer,"b"), "failed\n");
 345     ok( r==1, "return count wrong\n");
 346
 347     format = "%3c";
 348     r = sprintf(buffer, format,'a');
 349     ok(!strcmp(buffer,"  a"), "failed\n");
 350     ok( r==3, "return count wrong\n");
 351
 352     format = "%3d";
 353     r = sprintf(buffer, format,1234);
 354     ok(!strcmp(buffer,"1234"), "failed\n");
 355     ok( r==4, "return count wrong\n");
 356
 357     format = "%3h";
 358     r = sprintf(buffer, format);
 359     ok(!strcmp(buffer,""), "failed\n");
 360     ok( r==0, "return count wrong\n");
 361
 362     format = "%j%k%m%q%r%t%v%y%z";
 363     r = sprintf(buffer, format);
 364     ok(!strcmp(buffer,"jkmqrtvyz"), "failed\n");
 365     ok( r==9, "return count wrong\n");
 366
 367     format = "asdf%n";
 368     x = 0;
 369     r = sprintf(buffer, format, &x );
 370     ok(x == 4, "should write to x\n");
 371     ok(!strcmp(buffer,"asdf"), "failed\n");
 372     ok( r==4, "return count wrong\n");
 373
 374     format = "%-1d";
 375     r = sprintf(buffer, format,2);
 376     ok(!strcmp(buffer,"2"), "failed\n");
 377     ok( r==1, "return count wrong\n");
 378
 379     format = "%2.4f";
 380     r = sprintf(buffer, format,8.6);
 381     ok(!strcmp(buffer,"8.6000"), "failed\n");
 382     ok( r==6, "return count wrong\n");
 383
 384     format = "%0f";
 385     r = sprintf(buffer, format,0.6);
 386     ok(!strcmp(buffer,"0.600000"), "failed\n");
 387     ok( r==8, "return count wrong\n");
 388
 389     format = "%.0f";
 390     r = sprintf(buffer, format,0.6);
 391     ok(!strcmp(buffer,"1"), "failed\n");
 392     ok( r==1, "return count wrong\n");
 393
 394     todo_wine {
 395     format = "%2.4e";
 396     r = sprintf(buffer, format,8.6);
 397     ok(!strcmp(buffer,"8.6000e+000"), "failed\n");
 398     ok( r==11, "return count wrong\n");
 399     }
 400
 401     format = "%2.4g";
 402     r = sprintf(buffer, format,8.6);
 403     ok(!strcmp(buffer,"8.6"), "failed\n");
 404     ok( r==3, "return count wrong\n");
 405
 406     format = "%-i";
 407     r = sprintf(buffer, format,-1);
 408     ok(!strcmp(buffer,"-1"), "failed\n");
 409     ok( r==2, "return count wrong\n");
 410
 411     format = "%-i";
 412     r = sprintf(buffer, format,1);
 413     ok(!strcmp(buffer,"1"), "failed\n");
 414     ok( r==1, "return count wrong\n");
 415
 416     format = "%+i";
 417     r = sprintf(buffer, format,1);
 418     ok(!strcmp(buffer,"+1"), "failed\n");
 419     ok( r==2, "return count wrong\n");
 420
 421     format = "%o";
 422     r = sprintf(buffer, format,10);
 423     ok(!strcmp(buffer,"12"), "failed\n");
 424     ok( r==2, "return count wrong\n");
 425
 426     format = "%p";
 427     r = sprintf(buffer, format,0);
 428     ok(!strcmp(buffer,"00000000"), "failed\n");
 429     ok( r==8, "return count wrong\n");
 430
 431     format = "%s";
 432     r = sprintf(buffer, format,0);
 433     ok(!strcmp(buffer,"(null)"), "failed\n");
 434     ok( r==6, "return count wrong\n");
 435
 436     format = "%s";
 437     r = sprintf(buffer, format,"%%%%");
 438     ok(!strcmp(buffer,"%%%%"), "failed\n");
 439     ok( r==4, "return count wrong\n");
 440
 441     format = "%u";
 442     r = sprintf(buffer, format,-1);
 443     ok(!strcmp(buffer,"4294967295"), "failed\n");
 444     ok( r==10, "return count wrong\n");
 445
 446     format = "%w";
 447     r = sprintf(buffer, format,-1);
 448     ok(!strcmp(buffer,""), "failed\n");
 449     ok( r==0, "return count wrong\n");
 450
 451     format = "%h";
 452     r = sprintf(buffer, format,-1);
 453     ok(!strcmp(buffer,""), "failed\n");
 454     ok( r==0, "return count wrong\n");
 455
 456     format = "%z";
 457     r = sprintf(buffer, format,-1);
 458     ok(!strcmp(buffer,"z"), "failed\n");
 459     ok( r==1, "return count wrong\n");
 460
 461     format = "%j";
 462     r = sprintf(buffer, format,-1);
 463     ok(!strcmp(buffer,"j"), "failed\n");
 464     ok( r==1, "return count wrong\n");
 465
 466     format = "%F";
 467     r = sprintf(buffer, format,-1);
 468     ok(!strcmp(buffer,""), "failed\n");
 469     ok( r==0, "return count wrong\n");
 470
 471     format = "%H";
 472     r = sprintf(buffer, format,-1);
 473     ok(!strcmp(buffer,"H"), "failed\n");
 474     ok( r==1, "return count wrong\n");
 475
 476     format = "x%cx";
 477     r = sprintf(buffer, format, 0x100+'X');
 478     ok(!strcmp(buffer,"xXx"), "failed\n");
 479     ok( r==3, "return count wrong\n");
 480
 481     format = "%%0";
 482     r = sprintf(buffer, format);
 483     ok(!strcmp(buffer,"%0"), "failed: \"%s\"\n", buffer);
 484     ok( r==2, "return count wrong\n");
 485 }
 486
 487 static void test_swprintf( void )
 488 {
 489     wchar_t buffer[100];
 490     const wchar_t I64d[] = {'%','I','6','4','d',0};
 491     double pnumber=789456123;
 492     const wchar_t TwentyThreePoint15e[]= {'%','+','#','2','3','.','1','5','e',0};
 493     const wchar_t e008[] = {'e','+','0','0','8',0};
 494     const wchar_t string_w[] = {'s','t','r','i','n','g',0};
 495     const char string[] = "string";
 496     const wchar_t S[]={'%','S',0};
 497     const wchar_t hs[] = {'%', 'h', 's', 0};
 498
 499     swprintf(buffer,TwentyThreePoint15e,pnumber);
 500     todo_wine
 501       {
 502         ok(wcsstr(buffer,e008) != 0,"Sprintf different\n");
 503       }
 504     swprintf(buffer,I64d,((ULONGLONG)0xffffffff)*0xffffffff);
 505       ok(wcslen(buffer) == 11,"Problem with long long\n");
 506     swprintf(buffer,S,string);
 507       ok(wcslen(buffer) == 6,"Problem with \"%%S\" interpretation\n");
 508    swprintf(buffer, hs, string);
 509    ok( wcscmp(string_w,buffer) == 0, "swprintf failed with %%hs\n");
 510 }
 511
 512 static void test_fwprintf( void )
 513 {
 514     const char *string="not a wide string";
 515     todo_wine
 516       {
 517         ok(fwprintf(fopen("nul","r+"),(const wchar_t *)string) == -1,
 518            "Non-wide string should not be printed by fwprintf\n");
 519       }
 520 }
 521
 522 static void test_snprintf (void)
 523 {
 524     struct snprintf_test {
 525         const char *format;
 526         int expected;
 527     };
 528     /* Pre-2.1 libc behaviour, not C99 compliant. */
 529     const struct snprintf_test tests[] = {{"short", 5},
 530                                           {"justfit", 7},
 531                                           {"justfits", 8},
 532                                           {"muchlonger", -1}};
 533     char buffer[8];
 534     const int bufsiz = sizeof buffer;
 535     unsigned int i;
 536
 537     for (i = 0; i < sizeof tests / sizeof tests[0]; i++) {
 538         const char *fmt  = tests[i].format;
 539         const int expect = tests[i].expected;
 540         const int n      = _snprintf (buffer, bufsiz, fmt);
 541         const int valid  = n < 0 ? bufsiz : (n == bufsiz ? n : n+1);
 542
 543         ok (n == expect, "\"%s\": expected %d, returned %d\n",
 544             fmt, expect, n);
 545         ok (!memcmp (fmt, buffer, valid),
 546             "\"%s\": rendered \"%.*s\"\n", fmt, valid, buffer);
 547     };
 548 }
 549
 550 static void test_fcvt(void)
 551 {
 552     char *str;
 553     int dec=100, sign=100;
 554
 555     str = _fcvt(0.0001, 1, &dec, &sign );
 556     todo_wine {
 557     ok( 0 == strcmp(str,""), "bad return\n");
 558     ok( -3 == dec, "dec wrong\n");
 559     }
 560     ok( 0 == sign, "dec wrong\n");
 561
 562     str = _fcvt(0.0001, -10, &dec, &sign );
 563     todo_wine {
 564     ok( 0 == strcmp(str,""), "bad return\n");
 565     ok( -3 == dec, "dec wrong\n");
 566     }
 567     ok( 0 == sign, "dec wrong\n");
 568
 569     str = _fcvt(0.0001, 10, &dec, &sign );
 570     todo_wine {
 571     ok( 0 == strcmp(str,"1000000"), "bad return\n");
 572     ok( -3 == dec, "dec wrong\n");
 573     }
 574     ok( 0 == sign, "dec wrong\n");
 575
 576     str = _fcvt(-111.0001, 5, &dec, &sign );
 577     todo_wine {
 578     ok( 0 == strcmp(str,"11100010"), "bad return\n");
 579     ok( 3 == dec, "dec wrong\n");
 580     }
 581     ok( 1 == sign, "dec wrong\n");
 582
 583     str = _fcvt(111.0001, 5, &dec, &sign );
 584     todo_wine {
 585     ok( 0 == strcmp(str,"11100010"), "bad return\n");
 586     ok( 3 == dec, "dec wrong\n");
 587     }
 588     ok( 0 == sign, "dec wrong\n");
 589
 590     str = _fcvt(0.0, 5, &dec, &sign );
 591     todo_wine {
 592     ok( 0 == strcmp(str,"00000"), "bad return\n");
 593     ok( 0 == dec, "dec wrong\n");
 594     }
 595     ok( 0 == sign, "dec wrong\n");
 596 }
 597
 598 START_TEST(printf)
 599 {
 600     test_sprintf();
 601     test_swprintf();
 602     test_fwprintf();
 603     test_snprintf();
 604     test_fcvt();
 605 }