stdlib/tst-atof2.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5
   6 static const struct
   7 {
   8   const char *str;
   9   const char *expected;
  10 } tests[] =
  11   {
  12     { "1e308", "1e+308" },
  13     { "100000000e300", "1e+308" },
  14     { "0x1p1023", "8.98847e+307" },
  15     { "0x1000p1011", "8.98847e+307" },
  16     { "0x1p1020", "1.12356e+307" },
  17     { "0x0.00001p1040", "1.12356e+307" },
  18     { "1e-307", "1e-307" },
  19     { "0.000001e-301", "1e-307" },
  20     { "0.0000001e-300", "1e-307" },
  21     { "0.00000001e-299", "1e-307" },
  22     { "1000000e-313", "1e-307" },
  23     { "10000000e-314", "1e-307" },
  24     { "100000000e-315", "1e-307" },
  25     { "0x1p-1021", "4.45015e-308" },
  26     { "0x1000p-1033", "4.45015e-308" },
  27     { "0x10000p-1037", "4.45015e-308" },
  28     { "0x0.001p-1009", "4.45015e-308" },
  29     { "0x0.0001p-1005", "4.45015e-308" },
  30   };
  31 #define NTESTS (sizeof (tests) / sizeof (tests[0]))
  32
  33
  34 static int
  35 do_test (void)
  36 {
  37   int status = 0;
  38
  39   for (int i = 0; i < NTESTS; ++i)
  40     {
  41       char buf[100];
  42       snprintf (buf, sizeof (buf), "%g", atof (tests[i].str));
  43       if (strcmp (buf, tests[i].expected) != 0)
  44         {
  45           printf ("%d: got \"%s\", expected \"%s\"\n",
  46                   i, buf, tests[i].expected);
  47           status = 1;
  48         }
  49     }
  50
  51   return status;
  52 }
  53
  54 #define TEST_FUNCTION do_test ()
  55 #include "../test-skeleton.c"