Format
#include <math.h>
double hypot(double side1, double side2);Language Level: ILE C Extension
Threadsafe: Yes.
Description
The hypot() function calculates the length of the hypotenuse of a right-angled triangle based on the lengths of two sides side1 and side2. A call to the hypot() function is equivalent to:
sqrt(side1 * side1 + side2 * side2);Return Value
The hypot() function 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. The value of errno can also be set to EDOM.
Example that uses hypot()
This example calculates the hypotenuse of a right-angled triangle with sides of 3.0 and 4.0.
#include <math.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);
}
/******************** Output should be similar to: **************
The hypotenuse of the triangle with sides 3.000000 and 4.000000 is 5.000000
*/Related Information