stdio-common/tst-fphex.c

   1 /* Test program for %a printf formats.  */
   2
   3 #include <stdio.h>
   4 #include <string.h>
   5
   6 struct testcase
   7 {
   8   double value;
   9   const char *fmt;
  10   const char *expect;
  11 };
  12
  13 static const struct testcase testcases[] =
  14   {
  15     { 0x0.0030p+0, "%a",        "0x1.8p-11" },
  16     { 0x0.0040p+0, "%a",        "0x1p-10" },
  17     { 0x0.0030p+0, "%040a",     "0x00000000000000000000000000000001.8p-11" },
  18     { 0x0.0040p+0, "%040a",     "0x0000000000000000000000000000000001p-10" },
  19     { 0x0.0040p+0, "%40a",      "                                 0x1p-10" },
  20     { 0x0.0040p+0, "%#40a",     "                                0x1.p-10" },
  21     { 0x0.0040p+0, "%-40a",     "0x1p-10                                 " },
  22     { 0x0.0040p+0, "%#-40a",    "0x1.p-10                                " },
  23     { 0x0.0030p+0, "%040e",     "00000000000000000000000000007.324219e-04" },
  24     { 0x0.0040p+0, "%040e",     "00000000000000000000000000009.765625e-04" },
  25   };
  26
  27
  28 static int
  29 do_test (int argc, char **argv)
  30 {
  31   const struct testcase *t;
  32   int result = 0;
  33
  34   for (t = testcases;
  35        t < &testcases[sizeof testcases / sizeof testcases[0]];
  36        ++t)
  37     {
  38       char buf[1024];
  39       int n = snprintf (buf, sizeof buf, t->fmt, t->value);
  40       if (n != strlen (t->expect) || strcmp (buf, t->expect) != 0)
  41         {
  42           printf ("%s\tExpected \"%s\" (%Zu)\n\tGot      \"%s\" (%d, %Zu)\n",
  43                   t->fmt, t->expect, strlen (t->expect), buf, n, strlen (buf));
  44           result = 1;
  45         }
  46     }
  47
  48   return result;
  49 }
  50
  51 #include "../test-skeleton.c"