cfloat.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <errno.h>
   4 #include <math.h>
   5
   6 #include "cfloat.h"
   7
   8 int double_to_string(char *buf, double val)
   9 {
  10         if (buf == NULL)
  11                 return snprintf(NULL, 0, "%a", val);
  12         return sprintf(buf, "%a", val);
  13 }
  14
  15 double double_signum(double val)
  16 {
  17         if (signbit(val))
  18                 return -1;
  19         return 1;
  20 }
  21
  22 float double_to_float(double val)
  23 {
  24         return val;
  25 }
  26
  27 double float_to_double(float val)
  28 {
  29         return val;
  30 }