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glibc  2.9
Defines | Functions
tst-printf.c File Reference
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <float.h>

Go to the source code of this file.

Defines

#define DEC   -123
#define INT   255
#define UNS   (~0)
#define FORMAT   "|%12.4f|%12.4e|%12.4g|\n"

Functions

static void rfg1 (void)
static void rfg2 (void)
static void rfg3 (void)
static void fmtchk (const char *fmt)
static void fmtst1chk (const char *fmt)
static void fmtst2chk (const char *fmt)
static void fp_test (void)
int main (int argc, char *argv[])

Define Documentation

#define DEC   -123

Definition at line 78 of file tst-printf.c.

#define FORMAT   "|%12.4f|%12.4e|%12.4g|\n"
#define INT   255

Definition at line 79 of file tst-printf.c.

#define UNS   (~0)

Definition at line 80 of file tst-printf.c.


Function Documentation

static void fmtchk ( const char *  fmt) [static]

Definition at line 38 of file tst-printf.c.

{
  (void) fputs(fmt, stdout);
  (void) printf(":\t`");
  (void) printf(fmt, 0x12);
  (void) printf("'\n");
}

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static void fmtst1chk ( const char *  fmt) [static]

Definition at line 47 of file tst-printf.c.

{
  (void) fputs(fmt, stdout);
  (void) printf(":\t`");
  (void) printf(fmt, 4, 0x12);
  (void) printf("'\n");
}

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static void fmtst2chk ( const char *  fmt) [static]

Definition at line 56 of file tst-printf.c.

{
  (void) fputs(fmt, stdout);
  (void) printf(":\t`");
  (void) printf(fmt, 4, 4, 0x12);
  (void) printf("'\n");
}

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static void fp_test ( void  ) [static]

Definition at line 88 of file tst-printf.c.

{
  int i, j, k, l;
  char buf[7];
  char *prefix = buf;
  char tp[20];

  puts("\nFormatted output test");
  printf("prefix  6d      6o      6x      6X      6u\n");
  strcpy(prefix, "%");
  for (i = 0; i < 2; i++) {
    for (j = 0; j < 2; j++) {
      for (k = 0; k < 2; k++) {
       for (l = 0; l < 2; l++) {
         strcpy(prefix, "%");
         if (i == 0) strcat(prefix, "-");
         if (j == 0) strcat(prefix, "+");
         if (k == 0) strcat(prefix, "#");
         if (l == 0) strcat(prefix, "0");
         printf("%5s |", prefix);
         strcpy(tp, prefix);
         strcat(tp, "6d |");
         printf(tp, DEC);
         strcpy(tp, prefix);
         strcat(tp, "6o |");
         printf(tp, INT);
         strcpy(tp, prefix);
         strcat(tp, "6x |");
         printf(tp, INT);
         strcpy(tp, prefix);
         strcat(tp, "6X |");
         printf(tp, INT);
         strcpy(tp, prefix);
         strcat(tp, "6u |");
         printf(tp, UNS);
         printf("\n");
       }
      }
    }
  }
  printf("%10s\n", (char *) NULL);
  printf("%-10s\n", (char *) NULL);
}

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int main ( int  argc,
char *  argv[] 
)

Definition at line 133 of file tst-printf.c.

{
  static char shortstr[] = "Hi, Z.";
  static char longstr[] = "Good morning, Doctor Chandra.  This is Hal.  \
I am ready for my first lesson today.";
  int result = 0;

  fmtchk("%.4x");
  fmtchk("%04x");
  fmtchk("%4.4x");
  fmtchk("%04.4x");
  fmtchk("%4.3x");
  fmtchk("%04.3x");

  fmtst1chk("%.*x");
  fmtst1chk("%0*x");
  fmtst2chk("%*.*x");
  fmtst2chk("%0*.*x");

#ifndef       BSD
  printf("bad format:\t\"%b\"\n");
  printf("nil pointer (padded):\t\"%10p\"\n", (void *) NULL);
#endif

  printf("decimal negative:\t\"%d\"\n", -2345);
  printf("octal negative:\t\"%o\"\n", -2345);
  printf("hex negative:\t\"%x\"\n", -2345);
  printf("long decimal number:\t\"%ld\"\n", -123456L);
  printf("long octal negative:\t\"%lo\"\n", -2345L);
  printf("long unsigned decimal number:\t\"%lu\"\n", -123456L);
  printf("zero-padded LDN:\t\"%010ld\"\n", -123456L);
  printf("left-adjusted ZLDN:\t\"%-010ld\"\n", -123456L);
  printf("space-padded LDN:\t\"%10ld\"\n", -123456L);
  printf("left-adjusted SLDN:\t\"%-10ld\"\n", -123456L);

  printf("zero-padded string:\t\"%010s\"\n", shortstr);
  printf("left-adjusted Z string:\t\"%-010s\"\n", shortstr);
  printf("space-padded string:\t\"%10s\"\n", shortstr);
  printf("left-adjusted S string:\t\"%-10s\"\n", shortstr);
  printf("null string:\t\"%s\"\n", (char *)NULL);
  printf("limited string:\t\"%.22s\"\n", longstr);

  printf("e-style >= 1:\t\"%e\"\n", 12.34);
  printf("e-style >= .1:\t\"%e\"\n", 0.1234);
  printf("e-style < .1:\t\"%e\"\n", 0.001234);
  printf("e-style big:\t\"%.60e\"\n", 1e20);
  printf ("e-style == .1:\t\"%e\"\n", 0.1);
  printf("f-style >= 1:\t\"%f\"\n", 12.34);
  printf("f-style >= .1:\t\"%f\"\n", 0.1234);
  printf("f-style < .1:\t\"%f\"\n", 0.001234);
  printf("g-style >= 1:\t\"%g\"\n", 12.34);
  printf("g-style >= .1:\t\"%g\"\n", 0.1234);
  printf("g-style < .1:\t\"%g\"\n", 0.001234);
  printf("g-style big:\t\"%.60g\"\n", 1e20);

  printf (" %6.5f\n", .099999999860301614);
  printf (" %6.5f\n", .1);
  printf ("x%5.4fx\n", .5);

  printf ("%#03x\n", 1);

  printf ("something really insane: %.10000f\n", 1.0);

  {
    double d = FLT_MIN;
    int niter = 17;

    while (niter-- != 0)
      printf ("%.17e\n", d / 2);
    fflush (stdout);
  }

  printf ("%15.5e\n", 4.9406564584124654e-324);

#define FORMAT "|%12.4f|%12.4e|%12.4g|\n"
  printf (FORMAT, 0.0, 0.0, 0.0);
  printf (FORMAT, 1.0, 1.0, 1.0);
  printf (FORMAT, -1.0, -1.0, -1.0);
  printf (FORMAT, 100.0, 100.0, 100.0);
  printf (FORMAT, 1000.0, 1000.0, 1000.0);
  printf (FORMAT, 10000.0, 10000.0, 10000.0);
  printf (FORMAT, 12345.0, 12345.0, 12345.0);
  printf (FORMAT, 100000.0, 100000.0, 100000.0);
  printf (FORMAT, 123456.0, 123456.0, 123456.0);
#undef FORMAT

  {
    char buf[20];
    char buf2[512];
    printf ("snprintf (\"%%30s\", \"foo\") == %d, \"%.*s\"\n",
           snprintf (buf, sizeof (buf), "%30s", "foo"), (int) sizeof (buf),
           buf);
    printf ("snprintf (\"%%.999999u\", 10) == %d\n",
           snprintf(buf2, sizeof(buf2), "%.999999u", 10));
  }

  fp_test ();

  printf ("%e should be 1.234568e+06\n", 1234567.8);
  printf ("%f should be 1234567.800000\n", 1234567.8);
  printf ("%g should be 1.23457e+06\n", 1234567.8);
  printf ("%g should be 123.456\n", 123.456);
  printf ("%g should be 1e+06\n", 1000000.0);
  printf ("%g should be 10\n", 10.0);
  printf ("%g should be 0.02\n", 0.02);

#if 0
  /* This test rather checks the way the compiler handles constant
     folding.  gcc behavior wrt to this changed in 3.2 so it is not a
     portable test.  */
  {
    double x=1.0;
    printf("%.17f\n",(1.0/x/10.0+1.0)*x-x);
  }
#endif

  {
    char buf[200];

    sprintf(buf,"%*s%*s%*s",-1,"one",-20,"two",-30,"three");

    result |= strcmp (buf,
                    "onetwo                 three                         ");

    puts (result != 0 ? "Test failed!" : "Test ok.");
  }

  {
    char buf[200];

    sprintf (buf, "%07Lo", 040000000000ll);
    printf ("sprintf (buf, \"%%07Lo\", 040000000000ll) = %s", buf);

    if (strcmp (buf, "40000000000") != 0)
      {
       result = 1;
       fputs ("\tFAILED", stdout);
      }
    puts ("");
  }

  printf ("printf (\"%%hhu\", %u) = %hhu\n", UCHAR_MAX + 2, UCHAR_MAX + 2);
  printf ("printf (\"%%hu\", %u) = %hu\n", USHRT_MAX + 2, USHRT_MAX + 2);
  printf ("printf (\"%%hhi\", %i) = %hhi\n", UCHAR_MAX + 2, UCHAR_MAX + 2);
  printf ("printf (\"%%hi\", %i) = %hi\n", USHRT_MAX + 2, USHRT_MAX + 2);

  printf ("printf (\"%%1$hhu\", %2$u) = %1$hhu\n",
         UCHAR_MAX + 2, UCHAR_MAX + 2);
  printf ("printf (\"%%1$hu\", %2$u) = %1$hu\n", USHRT_MAX + 2, USHRT_MAX + 2);
  printf ("printf (\"%%1$hhi\", %2$i) = %1$hhi\n",
         UCHAR_MAX + 2, UCHAR_MAX + 2);
  printf ("printf (\"%%1$hi\", %2$i) = %1$hi\n", USHRT_MAX + 2, USHRT_MAX + 2);

  puts ("--- Should be no further output. ---");
  rfg1 ();
  rfg2 ();
  rfg3 ();

  {
    char bytes[7];
    char buf[20];

    memset (bytes, '\xff', sizeof bytes);
    sprintf (buf, "foo%hhn\n", &bytes[3]);
    if (bytes[0] != '\xff' || bytes[1] != '\xff' || bytes[2] != '\xff'
       || bytes[4] != '\xff' || bytes[5] != '\xff' || bytes[6] != '\xff')
      {
       puts ("%hhn overwrite more bytes");
       result = 1;
      }
    if (bytes[3] != 3)
      {
       puts ("%hhn wrote incorrect value");
       result = 1;
      }
  }

  return result != 0;
}

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static void rfg1 ( void  ) [static]

Definition at line 314 of file tst-printf.c.

{
  char buf[100];

  sprintf (buf, "%5.s", "xyz");
  if (strcmp (buf, "     ") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "     ");
  sprintf (buf, "%5.f", 33.3);
  if (strcmp (buf, "   33") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "   33");
  sprintf (buf, "%8.e", 33.3e7);
  if (strcmp (buf, "   3e+08") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "   3e+08");
  sprintf (buf, "%8.E", 33.3e7);
  if (strcmp (buf, "   3E+08") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "   3E+08");
  sprintf (buf, "%.g", 33.3);
  if (strcmp (buf, "3e+01") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "3e+01");
  sprintf (buf, "%.G", 33.3);
  if (strcmp (buf, "3E+01") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "3E+01");
}

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static void rfg2 ( void  ) [static]

Definition at line 339 of file tst-printf.c.

{
  int prec;
  char buf[100];

  prec = 0;
  sprintf (buf, "%.*g", prec, 3.3);
  if (strcmp (buf, "3") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "3");
  prec = 0;
  sprintf (buf, "%.*G", prec, 3.3);
  if (strcmp (buf, "3") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "3");
  prec = 0;
  sprintf (buf, "%7.*G", prec, 3.33);
  if (strcmp (buf, "      3") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "      3");
  prec = 3;
  sprintf (buf, "%04.*o", prec, 33);
  if (strcmp (buf, " 041") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, " 041");
  prec = 7;
  sprintf (buf, "%09.*u", prec, 33);
  if (strcmp (buf, "  0000033") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, "  0000033");
  prec = 3;
  sprintf (buf, "%04.*x", prec, 33);
  if (strcmp (buf, " 021") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, " 021");
  prec = 3;
  sprintf (buf, "%04.*X", prec, 33);
  if (strcmp (buf, " 021") != 0)
    printf ("got: '%s', expected: '%s'\n", buf, " 021");
}

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static void rfg3 ( void  ) [static]

Definition at line 375 of file tst-printf.c.

{
  char buf[100];
  double g = 5.0000001;
  unsigned long l = 1234567890;
  double d = 321.7654321;
  const char s[] = "test-string";
  int i = 12345;
  int h = 1234;

  sprintf (buf,
          "%1$*5$d %2$*6$hi %3$*7$lo %4$*8$f %9$*12$e %10$*13$g %11$*14$s",
          i, h, l, d, 8, 5, 14, 14, d, g, s, 14, 3, 14);
  if (strcmp (buf,
             "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string") != 0)
    printf ("got: '%s', expected: '%s'\n", buf,
           "   12345  1234    11145401322     321.765432   3.217654e+02   5    test-string");
}

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