stdio-common/tst-printf.c

   1 /* Copyright (C) 1991-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifdef  BSD
  19 #include </usr/include/stdio.h>
  20 #define EXIT_SUCCESS 0
  21 #else
  22 #include <limits.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #endif
  27
  28 #include <float.h>
  29
  30 static void rfg1 (void);
  31 static void rfg2 (void);
  32 static void rfg3 (void);
  33
  34
  35 static void
  36 fmtchk (const char *fmt)
  37 {
  38   (void) fputs(fmt, stdout);
  39   (void) printf(":\t`");
  40   (void) printf(fmt, 0x12);
  41   (void) printf("'\n");
  42 }
  43
  44 static void
  45 fmtst1chk (const char *fmt)
  46 {
  47   (void) fputs(fmt, stdout);
  48   (void) printf(":\t`");
  49   (void) printf(fmt, 4, 0x12);
  50   (void) printf("'\n");
  51 }
  52
  53 static void
  54 fmtst2chk (const char *fmt)
  55 {
  56   (void) fputs(fmt, stdout);
  57   (void) printf(":\t`");
  58   (void) printf(fmt, 4, 4, 0x12);
  59   (void) printf("'\n");
  60 }
  61 \f
  62 /* This page is covered by the following copyright: */
  63
  64 /* (C) Copyright C E Chew
  65  *
  66  * Feel free to copy, use and distribute this software provided:
  67  *
  68  *      1. you do not pretend that you wrote it
  69  *      2. you leave this copyright notice intact.
  70  */
  71
  72 /*
  73  * Extracted from exercise.c for glibc-1.05 bug report by Bruce Evans.
  74  */
  75
  76 #define DEC -123
  77 #define INT 255
  78 #define UNS (~0)
  79
  80 /* Formatted Output Test
  81  *
  82  * This exercises the output formatting code.
  83  */
  84
  85 static void
  86 fp_test (void)
  87 {
  88   int i, j, k, l;
  89   char buf[7];
  90   char *prefix = buf;
  91   char tp[20];
  92
  93   puts("\nFormatted output test");
  94   printf("prefix  6d      6o      6x      6X      6u\n");
  95   strcpy(prefix, "%");
  96   for (i = 0; i < 2; i++) {
  97     for (j = 0; j < 2; j++) {
  98       for (k = 0; k < 2; k++) {
  99         for (l = 0; l < 2; l++) {
 100           strcpy(prefix, "%");
 101           if (i == 0) strcat(prefix, "-");
 102           if (j == 0) strcat(prefix, "+");
 103           if (k == 0) strcat(prefix, "#");
 104           if (l == 0) strcat(prefix, "0");
 105           printf("%5s |", prefix);
 106           strcpy(tp, prefix);
 107           strcat(tp, "6d |");
 108           printf(tp, DEC);
 109           strcpy(tp, prefix);
 110           strcat(tp, "6o |");
 111           printf(tp, INT);
 112           strcpy(tp, prefix);
 113           strcat(tp, "6x |");
 114           printf(tp, INT);
 115           strcpy(tp, prefix);
 116           strcat(tp, "6X |");
 117           printf(tp, INT);
 118           strcpy(tp, prefix);
 119           strcat(tp, "6u |");
 120           printf(tp, UNS);
 121           printf("\n");
 122         }
 123       }
 124     }
 125   }
 126   printf("%10s\n", (char *) NULL);
 127   printf("%-10s\n", (char *) NULL);
 128 }
 129 \f
 130 int
 131 main (int argc, char *argv[])
 132 {
 133   static char shortstr[] = "Hi, Z.";
 134   static char longstr[] = "Good morning, Doctor Chandra.  This is Hal.  \
 135 I am ready for my first lesson today.";
 136   int result = 0;
 137
 138   fmtchk("%.4x");
 139   fmtchk("%04x");
 140   fmtchk("%4.4x");
 141   fmtchk("%04.4x");
 142   fmtchk("%4.3x");
 143   fmtchk("%04.3x");
 144
 145   fmtst1chk("%.*x");
 146   fmtst1chk("%0*x");
 147   fmtst2chk("%*.*x");
 148   fmtst2chk("%0*.*x");
 149
 150 #ifndef BSD
 151   printf("bad format:\t\"%b\"\n");
 152   printf("nil pointer (padded):\t\"%10p\"\n", (void *) NULL);
 153 #endif
 154
 155   printf("decimal negative:\t\"%d\"\n", -2345);
 156   printf("octal negative:\t\"%o\"\n", -2345);
 157   printf("hex negative:\t\"%x\"\n", -2345);
 158   printf("long decimal number:\t\"%ld\"\n", -123456L);
 159   printf("long octal negative:\t\"%lo\"\n", -2345L);
 160   printf("long unsigned decimal number:\t\"%lu\"\n", -123456L);
 161   printf("zero-padded LDN:\t\"%010ld\"\n", -123456L);
 162   printf("left-adjusted ZLDN:\t\"%-010ld\"\n", -123456L);
 163   printf("space-padded LDN:\t\"%10ld\"\n", -123456L);
 164   printf("left-adjusted SLDN:\t\"%-10ld\"\n", -123456L);
 165
 166   printf("zero-padded string:\t\"%010s\"\n", shortstr);
 167   printf("left-adjusted Z string:\t\"%-010s\"\n", shortstr);
 168   printf("space-padded string:\t\"%10s\"\n", shortstr);
 169   printf("left-adjusted S string:\t\"%-10s\"\n", shortstr);
 170   printf("null string:\t\"%s\"\n", (char *)NULL);
 171   printf("limited string:\t\"%.22s\"\n", longstr);
 172
 173   printf("e-style >= 1:\t\"%e\"\n", 12.34);
 174   printf("e-style >= .1:\t\"%e\"\n", 0.1234);
 175   printf("e-style < .1:\t\"%e\"\n", 0.001234);
 176   printf("e-style big:\t\"%.60e\"\n", 1e20);
 177   printf ("e-style == .1:\t\"%e\"\n", 0.1);
 178   printf("f-style >= 1:\t\"%f\"\n", 12.34);
 179   printf("f-style >= .1:\t\"%f\"\n", 0.1234);
 180   printf("f-style < .1:\t\"%f\"\n", 0.001234);
 181   printf("g-style >= 1:\t\"%g\"\n", 12.34);
 182   printf("g-style >= .1:\t\"%g\"\n", 0.1234);
 183   printf("g-style < .1:\t\"%g\"\n", 0.001234);
 184   printf("g-style big:\t\"%.60g\"\n", 1e20);
 185
 186   printf (" %6.5f\n", .099999999860301614);
 187   printf (" %6.5f\n", .1);
 188   printf ("x%5.4fx\n", .5);
 189
 190   printf ("%#03x\n", 1);
 191
 192   printf ("something really insane: %.10000f\n", 1.0);
 193
 194   {
 195     double d = FLT_MIN;
 196     int niter = 17;
 197
 198     while (niter-- != 0)
 199       printf ("%.17e\n", d / 2);
 200     fflush (stdout);
 201   }
 202
 203   printf ("%15.5e\n", 4.9406564584124654e-324);
 204
 205 #define FORMAT "|%12.4f|%12.4e|%12.4g|\n"
 206   printf (FORMAT, 0.0, 0.0, 0.0);
 207   printf (FORMAT, 1.0, 1.0, 1.0);
 208   printf (FORMAT, -1.0, -1.0, -1.0);
 209   printf (FORMAT, 100.0, 100.0, 100.0);
 210   printf (FORMAT, 1000.0, 1000.0, 1000.0);
 211   printf (FORMAT, 10000.0, 10000.0, 10000.0);
 212   printf (FORMAT, 12345.0, 12345.0, 12345.0);
 213   printf (FORMAT, 100000.0, 100000.0, 100000.0);
 214   printf (FORMAT, 123456.0, 123456.0, 123456.0);
 215 #undef  FORMAT
 216
 217   {
 218     char buf[20];
 219     char buf2[512];
 220     printf ("snprintf (\"%%30s\", \"foo\") == %d, \"%.*s\"\n",
 221             snprintf (buf, sizeof (buf), "%30s", "foo"), (int) sizeof (buf),
 222             buf);
 223     printf ("snprintf (\"%%.999999u\", 10) == %d\n",
 224             snprintf(buf2, sizeof(buf2), "%.999999u", 10));
 225   }
 226
 227   fp_test ();
 228
 229   printf ("%e should be 1.234568e+06\n", 1234567.8);
 230   printf ("%f should be 1234567.800000\n", 1234567.8);
 231   printf ("%g should be 1.23457e+06\n", 1234567.8);
 232   printf ("%g should be 123.456\n", 123.456);
 233   printf ("%g should be 1e+06\n", 1000000.0);
 234   printf ("%g should be 10\n", 10.0);
 235   printf ("%g should be 0.02\n", 0.02);
 236
 237 #if 0
 238   /* This test rather checks the way the compiler handles constant
 239      folding.  gcc behavior wrt to this changed in 3.2 so it is not a
 240      portable test.  */
 241   {
 242     double x=1.0;
 243     printf("%.17f\n",(1.0/x/10.0+1.0)*x-x);
 244   }
 245 #endif
 246
 247   {
 248     char buf[200];
 249
 250     sprintf(buf,"%*s%*s%*s",-1,"one",-20,"two",-30,"three");
 251
 252     result |= strcmp (buf,
 253                       "onetwo                 three                         ");
 254
 255     puts (result != 0 ? "Test failed!" : "Test ok.");
 256   }
 257
 258   {
 259     char buf[200];
 260
 261     sprintf (buf, "%07Lo", 040000000000ll);
 262     printf ("sprintf (buf, \"%%07Lo\", 040000000000ll) = %s", buf);
 263
 264     if (strcmp (buf, "40000000000") != 0)
 265       {
 266         result = 1;
 267         fputs ("\tFAILED", stdout);
 268       }
 269     puts ("");
 270   }
 271
 272   printf ("printf (\"%%hhu\", %u) = %hhu\n", UCHAR_MAX + 2, UCHAR_MAX + 2);
 273   printf ("printf (\"%%hu\", %u) = %hu\n", USHRT_MAX + 2, USHRT_MAX + 2);
 274   printf ("printf (\"%%hhi\", %i) = %hhi\n", UCHAR_MAX + 2, UCHAR_MAX + 2);
 275   printf ("printf (\"%%hi\", %i) = %hi\n", USHRT_MAX + 2, USHRT_MAX + 2);
 276
 277   printf ("printf (\"%%1$hhu\", %2$u) = %1$hhu\n",
 278           UCHAR_MAX + 2, UCHAR_MAX + 2);
 279   printf ("printf (\"%%1$hu\", %2$u) = %1$hu\n", USHRT_MAX + 2, USHRT_MAX + 2);
 280   printf ("printf (\"%%1$hhi\", %2$i) = %1$hhi\n",
 281           UCHAR_MAX + 2, UCHAR_MAX + 2);
 282   printf ("printf (\"%%1$hi\", %2$i) = %1$hi\n", USHRT_MAX + 2, USHRT_MAX + 2);
 283
 284   puts ("--- Should be no further output. ---");
 285   rfg1 ();
 286   rfg2 ();
 287   rfg3 ();
 288
 289   {
 290     char bytes[7];
 291     char buf[20];
 292
 293     memset (bytes, '\xff', sizeof bytes);
 294     sprintf (buf, "foo%hhn\n", &bytes[3]);
 295     if (bytes[0] != '\xff' || bytes[1] != '\xff' || bytes[2] != '\xff'
 296         || bytes[4] != '\xff' || bytes[5] != '\xff' || bytes[6] != '\xff')
 297       {
 298         puts ("%hhn overwrite more bytes");
 299         result = 1;
 300       }
 301     if (bytes[3] != 3)
 302       {
 303         puts ("%hhn wrote incorrect value");
 304         result = 1;
 305       }
 306   }
 307
 308   return result != 0;
 309 }
 310 \f
 311 static void
 312 rfg1 (void)
 313 {
 314   char buf[100];
 315
 316   sprintf (buf, "%5.s", "xyz");
 317   if (strcmp (buf, "     ") != 0)
 318     printf ("got: '%s', expected: '%s'\n", buf, "     ");
 319   sprintf (buf, "%5.f", 33.3);
 320   if (strcmp (buf, "   33") != 0)
 321     printf ("got: '%s', expected: '%s'\n", buf, "   33");
 322   sprintf (buf, "%8.e", 33.3e7);
 323   if (strcmp (buf, "   3e+08") != 0)
 324     printf ("got: '%s', expected: '%s'\n", buf, "   3e+08");
 325   sprintf (buf, "%8.E", 33.3e7);
 326   if (strcmp (buf, "   3E+08") != 0)
 327     printf ("got: '%s', expected: '%s'\n", buf, "   3E+08");
 328   sprintf (buf, "%.g", 33.3);
 329   if (strcmp (buf, "3e+01") != 0)
 330     printf ("got: '%s', expected: '%s'\n", buf, "3e+01");
 331   sprintf (buf, "%.G", 33.3);
 332   if (strcmp (buf, "3E+01") != 0)
 333     printf ("got: '%s', expected: '%s'\n", buf, "3E+01");
 334 }
 335
 336 static void
 337 rfg2 (void)
 338 {
 339   int prec;
 340   char buf[100];
 341
 342   prec = 0;
 343   sprintf (buf, "%.*g", prec, 3.3);
 344   if (strcmp (buf, "3") != 0)
 345     printf ("got: '%s', expected: '%s'\n", buf, "3");
 346   prec = 0;
 347   sprintf (buf, "%.*G", prec, 3.3);
 348   if (strcmp (buf, "3") != 0)
 349     printf ("got: '%s', expected: '%s'\n", buf, "3");
 350   prec = 0;
 351   sprintf (buf, "%7.*G", prec, 3.33);
 352   if (strcmp (buf, "      3") != 0)
 353     printf ("got: '%s', expected: '%s'\n", buf, "      3");
 354   prec = 3;
 355   sprintf (buf, "%04.*o", prec, 33);
 356   if (strcmp (buf, " 041") != 0)
 357     printf ("got: '%s', expected: '%s'\n", buf, " 041");
 358   prec = 7;
 359   sprintf (buf, "%09.*u", prec, 33);
 360   if (strcmp (buf, "  0000033") != 0)
 361     printf ("got: '%s', expected: '%s'\n", buf, "  0000033");
 362   prec = 3;
 363   sprintf (buf, "%04.*x", prec, 33);
 364   if (strcmp (buf, " 021") != 0)
 365     printf ("got: '%s', expected: '%s'\n", buf, " 021");
 366   prec = 3;
 367   sprintf (buf, "%04.*X", prec, 33);
 368   if (strcmp (buf, " 021") != 0)
 369     printf ("got: '%s', expected: '%s'\n", buf, " 021");
 370 }
 371
 372 static void
 373 rfg3 (void)
 374 {
 375   char buf[100];
 376   double g = 5.0000001;
 377   unsigned long l = 1234567890;
 378   double d = 321.7654321;
 379   const char s[] = "test-string";
 380   int i = 12345;
 381   int h = 1234;
 382
 383   sprintf (buf,
 384            "%1$*5$d %2$*6$hi %3$*7$lo %4$*8$f %9$*12$e %10$*13$g %11$*14$s",
 385            i, h, l, d, 8, 5, 14, 14, d, g, s, 14, 3, 14);
 386   if (strcmp (buf,
 387               "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string") != 0)
 388     printf ("got: '%s', expected: '%s'\n", buf,
 389             "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string");
 390 }