hypot -- Calculate Hypotenuse

Format

#include <math.h>
double hypot(double side1, double side2);

Language Level: XPG4
hypot calculates the length of the hypotenuse of a right-angled triangle based on the lengths of two sides side1 and side2. A call to hypot is equivalent to:

sqrt(side1 * side1 + side2 * side2);

Return Value
hypot returns the length of the hypotenuse. If an overflow results, hypot sets errno to ERANGE and returns the value HUGE_VAL. If an underflow results, hypot sets errno to ERANGE and returns zero.

Example
This example calculates the hypotenuse of a right-angled triangle with sides of 3.0 and 4.0.

#include <math.h>
#include <stdio.h>
int main(void)
{
   double x, y, z;
   x = 3.0;
   y = 4.0;
   z = hypot(x,y);
   printf("The hypotenuse of the triangle with sides %lf and %lf"
          " is %lf\n", x, y, z);
   return 0;
   /*****************************************************************************
      The output should be:
      The hypotenuse of a triangle with sides 3.000000 and 4.000000 is 5.000000
   *****************************************************************************/
}


_fsqrt -- Calculate Square Root
sqrt -- Calculate Square Root
<math.h>