تابع ‎isgreaterequal()‎‎ در ‎C++‎

/* isgreaterequal example */
#include <stdio.h>/* printf */
#include <math.h>/* isgreaterequal, log */

int main ()
{
double result;
result = log (10.0);
if (isgreaterequal(result,0.0))
printf ("log(10.0) is not negative");
else
printf ("log(10.0) is negative");
return 0;
}