test/clib/strtod.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3
   4 const char * strings [] =
   5 {
   6     "1e1",
   7     "1.2e2",
   8     ".1e3",
   9     ".e4",
  10     "exp",
  11     "e",
  12     "12e ",
  13     "12.1ef",
  14     "12.e1",
  15     "12.e",
  16     "10.",
  17     "10e+2",
  18     "1000e-2",
  19     "20e+ ",
  20     "20e- ",
  21     "-exp",
  22     "+dummy",
  23     "+10",
  24     "-12.1e",
  25     "-.e+4",
  26     "-.1e+3",
  27     NULL
  28 };
  29
  30 const double results [] =
  31 {
  32     10.0,
  33     120.0,
  34     100.0,
  35     0.0,
  36     0.0,
  37     0.0,
  38     12.0,
  39     12.1,
  40     120,
  41     12,
  42     10,
  43     1000,
  44     10,
  45     20,
  46     20,
  47     0,
  48     0,
  49     10.0,
  50     -12.1,
  51     0,
  52     -100.0,
  53 };
  54
  55 const int ptroffset [] =
  56 {
  57     3,
  58     5,
  59     4,
  60     0,
  61     0,
  62     0,
  63     2,
  64     4,
  65     5,
  66     3,
  67     3,
  68     5,
  69     7,
  70     2,
  71     2,
  72     0,
  73     0,
  74     3,
  75     5,
  76     0,
  77     6
  78 };
  79
  80 int main()
  81 {
  82     char * float_end = NULL;
  83     double f = 0;
  84     int i = 0;
  85     const char * str = NULL;
  86
  87     while((str = strings[i]) != NULL)
  88     {
  89         f = strtod(str, &float_end);
  90         if (f != results[i])
  91             printf("RESULT FAILURE @ %s, should be %f was %f\n", str, results[i], f);
  92         if ((float_end - str) != ptroffset[i])
  93             printf("OFFSET FAILURE @ %s, should be %d was %d\n", str, ptroffset[i], (float_end - str));
  94         i++;
  95     }
  96 }