stdio-common/tst-printf.c

   1 /* Copyright (C) 1991,92,93,95,96,97,98,99, 2000, 2002
   2      Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifdef  BSD
  21 #include </usr/include/stdio.h>
  22 #define EXIT_SUCCESS 0
  23 #else
  24 #include <limits.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #endif
  29
  30 #include <float.h>
  31
  32 static void rfg1 (void);
  33 static void rfg2 (void);
  34 static void rfg3 (void);
  35
  36
  37 static void
  38 fmtchk (const char *fmt)
  39 {
  40   (void) fputs(fmt, stdout);
  41   (void) printf(":\t`");
  42   (void) printf(fmt, 0x12);
  43   (void) printf("'\n");
  44 }
  45
  46 static void
  47 fmtst1chk (const char *fmt)
  48 {
  49   (void) fputs(fmt, stdout);
  50   (void) printf(":\t`");
  51   (void) printf(fmt, 4, 0x12);
  52   (void) printf("'\n");
  53 }
  54
  55 static void
  56 fmtst2chk (const char *fmt)
  57 {
  58   (void) fputs(fmt, stdout);
  59   (void) printf(":\t`");
  60   (void) printf(fmt, 4, 4, 0x12);
  61   (void) printf("'\n");
  62 }
  63 \f
  64 /* This page is covered by the following copyright: */
  65
  66 /* (C) Copyright C E Chew
  67  *
  68  * Feel free to copy, use and distribute this software provided:
  69  *
  70  *      1. you do not pretend that you wrote it
  71  *      2. you leave this copyright notice intact.
  72  */
  73
  74 /*
  75  * Extracted from exercise.c for glibc-1.05 bug report by Bruce Evans.
  76  */
  77
  78 #define DEC -123
  79 #define INT 255
  80 #define UNS (~0)
  81
  82 /* Formatted Output Test
  83  *
  84  * This exercises the output formatting code.
  85  */
  86
  87 static void
  88 fp_test (void)
  89 {
  90   int i, j, k, l;
  91   char buf[7];
  92   char *prefix = buf;
  93   char tp[20];
  94
  95   puts("\nFormatted output test");
  96   printf("prefix  6d      6o      6x      6X      6u\n");
  97   strcpy(prefix, "%");
  98   for (i = 0; i < 2; i++) {
  99     for (j = 0; j < 2; j++) {
 100       for (k = 0; k < 2; k++) {
 101         for (l = 0; l < 2; l++) {
 102           strcpy(prefix, "%");
 103           if (i == 0) strcat(prefix, "-");
 104           if (j == 0) strcat(prefix, "+");
 105           if (k == 0) strcat(prefix, "#");
 106           if (l == 0) strcat(prefix, "0");
 107           printf("%5s |", prefix);
 108           strcpy(tp, prefix);
 109           strcat(tp, "6d |");
 110           printf(tp, DEC);
 111           strcpy(tp, prefix);
 112           strcat(tp, "6o |");
 113           printf(tp, INT);
 114           strcpy(tp, prefix);
 115           strcat(tp, "6x |");
 116           printf(tp, INT);
 117           strcpy(tp, prefix);
 118           strcat(tp, "6X |");
 119           printf(tp, INT);
 120           strcpy(tp, prefix);
 121           strcat(tp, "6u |");
 122           printf(tp, UNS);
 123           printf("\n");
 124         }
 125       }
 126     }
 127   }
 128   printf("%10s\n", (char *) NULL);
 129   printf("%-10s\n", (char *) NULL);
 130 }
 131 \f
 132 int
 133 main (int argc, char *argv[])
 134 {
 135   static char shortstr[] = "Hi, Z.";
 136   static char longstr[] = "Good morning, Doctor Chandra.  This is Hal.  \
 137 I am ready for my first lesson today.";
 138   int result = 0;
 139
 140   fmtchk("%.4x");
 141   fmtchk("%04x");
 142   fmtchk("%4.4x");
 143   fmtchk("%04.4x");
 144   fmtchk("%4.3x");
 145   fmtchk("%04.3x");
 146
 147   fmtst1chk("%.*x");
 148   fmtst1chk("%0*x");
 149   fmtst2chk("%*.*x");
 150   fmtst2chk("%0*.*x");
 151
 152 #ifndef BSD
 153   printf("bad format:\t\"%b\"\n");
 154   printf("nil pointer (padded):\t\"%10p\"\n", (void *) NULL);
 155 #endif
 156
 157   printf("decimal negative:\t\"%d\"\n", -2345);
 158   printf("octal negative:\t\"%o\"\n", -2345);
 159   printf("hex negative:\t\"%x\"\n", -2345);
 160   printf("long decimal number:\t\"%ld\"\n", -123456L);
 161   printf("long octal negative:\t\"%lo\"\n", -2345L);
 162   printf("long unsigned decimal number:\t\"%lu\"\n", -123456L);
 163   printf("zero-padded LDN:\t\"%010ld\"\n", -123456L);
 164   printf("left-adjusted ZLDN:\t\"%-010ld\"\n", -123456L);
 165   printf("space-padded LDN:\t\"%10ld\"\n", -123456L);
 166   printf("left-adjusted SLDN:\t\"%-10ld\"\n", -123456L);
 167
 168   printf("zero-padded string:\t\"%010s\"\n", shortstr);
 169   printf("left-adjusted Z string:\t\"%-010s\"\n", shortstr);
 170   printf("space-padded string:\t\"%10s\"\n", shortstr);
 171   printf("left-adjusted S string:\t\"%-10s\"\n", shortstr);
 172   printf("null string:\t\"%s\"\n", (char *)NULL);
 173   printf("limited string:\t\"%.22s\"\n", longstr);
 174
 175   printf("e-style >= 1:\t\"%e\"\n", 12.34);
 176   printf("e-style >= .1:\t\"%e\"\n", 0.1234);
 177   printf("e-style < .1:\t\"%e\"\n", 0.001234);
 178   printf("e-style big:\t\"%.60e\"\n", 1e20);
 179   printf ("e-style == .1:\t\"%e\"\n", 0.1);
 180   printf("f-style >= 1:\t\"%f\"\n", 12.34);
 181   printf("f-style >= .1:\t\"%f\"\n", 0.1234);
 182   printf("f-style < .1:\t\"%f\"\n", 0.001234);
 183   printf("g-style >= 1:\t\"%g\"\n", 12.34);
 184   printf("g-style >= .1:\t\"%g\"\n", 0.1234);
 185   printf("g-style < .1:\t\"%g\"\n", 0.001234);
 186   printf("g-style big:\t\"%.60g\"\n", 1e20);
 187
 188   printf (" %6.5f\n", .099999999860301614);
 189   printf (" %6.5f\n", .1);
 190   printf ("x%5.4fx\n", .5);
 191
 192   printf ("%#03x\n", 1);
 193
 194   printf ("something really insane: %.10000f\n", 1.0);
 195
 196   {
 197     double d = FLT_MIN;
 198     int niter = 17;
 199
 200     while (niter-- != 0)
 201       printf ("%.17e\n", d / 2);
 202     fflush (stdout);
 203   }
 204
 205   printf ("%15.5e\n", 4.9406564584124654e-324);
 206
 207 #define FORMAT "|%12.4f|%12.4e|%12.4g|\n"
 208   printf (FORMAT, 0.0, 0.0, 0.0);
 209   printf (FORMAT, 1.0, 1.0, 1.0);
 210   printf (FORMAT, -1.0, -1.0, -1.0);
 211   printf (FORMAT, 100.0, 100.0, 100.0);
 212   printf (FORMAT, 1000.0, 1000.0, 1000.0);
 213   printf (FORMAT, 10000.0, 10000.0, 10000.0);
 214   printf (FORMAT, 12345.0, 12345.0, 12345.0);
 215   printf (FORMAT, 100000.0, 100000.0, 100000.0);
 216   printf (FORMAT, 123456.0, 123456.0, 123456.0);
 217 #undef  FORMAT
 218
 219   {
 220     char buf[20];
 221     char buf2[512];
 222     printf ("snprintf (\"%%30s\", \"foo\") == %d, \"%.*s\"\n",
 223             snprintf (buf, sizeof (buf), "%30s", "foo"), (int) sizeof (buf),
 224             buf);
 225     printf ("snprintf (\"%%.999999u\", 10) == %d\n",
 226             snprintf(buf2, sizeof(buf2), "%.999999u", 10));
 227   }
 228
 229   fp_test ();
 230
 231   printf ("%e should be 1.234568e+06\n", 1234567.8);
 232   printf ("%f should be 1234567.800000\n", 1234567.8);
 233   printf ("%g should be 1.23457e+06\n", 1234567.8);
 234   printf ("%g should be 123.456\n", 123.456);
 235   printf ("%g should be 1e+06\n", 1000000.0);
 236   printf ("%g should be 10\n", 10.0);
 237   printf ("%g should be 0.02\n", 0.02);
 238
 239 #if 0
 240   /* This test rather checks the way the compiler handles constant
 241      folding.  gcc behavior wrt to this changed in 3.2 so it is not a
 242      portable test.  */
 243   {
 244     double x=1.0;
 245     printf("%.17f\n",(1.0/x/10.0+1.0)*x-x);
 246   }
 247 #endif
 248
 249   {
 250     char buf[200];
 251
 252     sprintf(buf,"%*s%*s%*s",-1,"one",-20,"two",-30,"three");
 253
 254     result |= strcmp (buf,
 255                       "onetwo                 three                         ");
 256
 257     puts (result != 0 ? "Test failed!" : "Test ok.");
 258   }
 259
 260   {
 261     char buf[200];
 262
 263     sprintf (buf, "%07Lo", 040000000000ll);
 264     printf ("sprintf (buf, \"%%07Lo\", 040000000000ll) = %s", buf);
 265
 266     if (strcmp (buf, "40000000000") != 0)
 267       {
 268         result = 1;
 269         fputs ("\tFAILED", stdout);
 270       }
 271     puts ("");
 272   }
 273
 274   printf ("printf (\"%%hhu\", %u) = %hhu\n", UCHAR_MAX + 2, UCHAR_MAX + 2);
 275   printf ("printf (\"%%hu\", %u) = %hu\n", USHRT_MAX + 2, USHRT_MAX + 2);
 276
 277   puts ("--- Should be no further output. ---");
 278   rfg1 ();
 279   rfg2 ();
 280   rfg3 ();
 281
 282   {
 283     char bytes[7];
 284     char buf[20];
 285
 286     memset (bytes, '\xff', sizeof bytes);
 287     sprintf (buf, "foo%hhn\n", &bytes[3]);
 288     if (bytes[0] != '\xff' || bytes[1] != '\xff' || bytes[2] != '\xff'
 289         || bytes[4] != '\xff' || bytes[5] != '\xff' || bytes[6] != '\xff')
 290       {
 291         puts ("%hhn overwrite more bytes");
 292         result = 1;
 293       }
 294     if (bytes[3] != 3)
 295       {
 296         puts ("%hhn wrote incorrect value");
 297         result = 1;
 298       }
 299   }
 300
 301   return result != 0;
 302 }
 303 \f
 304 static void
 305 rfg1 (void)
 306 {
 307   char buf[100];
 308
 309   sprintf (buf, "%5.s", "xyz");
 310   if (strcmp (buf, "     ") != 0)
 311     printf ("got: '%s', expected: '%s'\n", buf, "     ");
 312   sprintf (buf, "%5.f", 33.3);
 313   if (strcmp (buf, "   33") != 0)
 314     printf ("got: '%s', expected: '%s'\n", buf, "   33");
 315   sprintf (buf, "%8.e", 33.3e7);
 316   if (strcmp (buf, "   3e+08") != 0)
 317     printf ("got: '%s', expected: '%s'\n", buf, "   3e+08");
 318   sprintf (buf, "%8.E", 33.3e7);
 319   if (strcmp (buf, "   3E+08") != 0)
 320     printf ("got: '%s', expected: '%s'\n", buf, "   3E+08");
 321   sprintf (buf, "%.g", 33.3);
 322   if (strcmp (buf, "3e+01") != 0)
 323     printf ("got: '%s', expected: '%s'\n", buf, "3e+01");
 324   sprintf (buf, "%.G", 33.3);
 325   if (strcmp (buf, "3E+01") != 0)
 326     printf ("got: '%s', expected: '%s'\n", buf, "3E+01");
 327 }
 328
 329 static void
 330 rfg2 (void)
 331 {
 332   int prec;
 333   char buf[100];
 334
 335   prec = 0;
 336   sprintf (buf, "%.*g", prec, 3.3);
 337   if (strcmp (buf, "3") != 0)
 338     printf ("got: '%s', expected: '%s'\n", buf, "3");
 339   prec = 0;
 340   sprintf (buf, "%.*G", prec, 3.3);
 341   if (strcmp (buf, "3") != 0)
 342     printf ("got: '%s', expected: '%s'\n", buf, "3");
 343   prec = 0;
 344   sprintf (buf, "%7.*G", prec, 3.33);
 345   if (strcmp (buf, "      3") != 0)
 346     printf ("got: '%s', expected: '%s'\n", buf, "      3");
 347   prec = 3;
 348   sprintf (buf, "%04.*o", prec, 33);
 349   if (strcmp (buf, " 041") != 0)
 350     printf ("got: '%s', expected: '%s'\n", buf, " 041");
 351   prec = 7;
 352   sprintf (buf, "%09.*u", prec, 33);
 353   if (strcmp (buf, "  0000033") != 0)
 354     printf ("got: '%s', expected: '%s'\n", buf, "  0000033");
 355   prec = 3;
 356   sprintf (buf, "%04.*x", prec, 33);
 357   if (strcmp (buf, " 021") != 0)
 358     printf ("got: '%s', expected: '%s'\n", buf, " 021");
 359   prec = 3;
 360   sprintf (buf, "%04.*X", prec, 33);
 361   if (strcmp (buf, " 021") != 0)
 362     printf ("got: '%s', expected: '%s'\n", buf, " 021");
 363 }
 364
 365 static void
 366 rfg3 (void)
 367 {
 368   char buf[100];
 369   double g = 5.0000001;
 370   unsigned long l = 1234567890;
 371   double d = 321.7654321;
 372   const char s[] = "test-string";
 373   int i = 12345;
 374   int h = 1234;
 375
 376   sprintf (buf,
 377            "%1$*5$d %2$*6$hi %3$*7$lo %4$*8$f %9$*12$e %10$*13$g %11$*14$s",
 378            i, h, l, d, 8, 5, 14, 14, d, g, s, 14, 3, 14);
 379   if (strcmp (buf,
 380               "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string") != 0)
 381     printf ("got: '%s', expected: '%s'\n", buf,
 382             "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string");
 383 }