| macro | isless(x,y) |
|---|
| function | bool isless (float x , float y);bool isless (double x , double y);bool isless (long double x, long double y); |
|---|
false, but no FE_INVALID exception is raised (note that the expression x<y may raise such an exception in this case).int value. The type of both x and y shall be float, double or long double.bool value.(x)<(y):true (1) if x is less than y.false (0) otherwise.1
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/* isless example */
#include <stdio.h> /* printf */
#include <math.h> /* isless, log */
int main ()
{
double result;
result = log (10.0);
if (isless(result,0.0))
printf ("log(10.0) is negative");
else
printf ("log(10.0) is not negative");
return 0;
}log(10.0) is not negative