maths.java

java程序包

package com.biolab.node.nexTest.Jama;



public class Maths {



   /** sqrt(a^2 + b^2) without under/overflow. **/



   public static double hypot(double a, double b) {

      double r;

      if (Math.abs(a) > Math.abs(b)) {

         r = b/a;

         r = Math.abs(a)*Math.sqrt(1+r*r);

      } else if (b != 0) {

         r = a/b;

         r = Math.abs(b)*Math.sqrt(1+r*r);

      } else {

         r = 0.0;

      }

      return r;

   }

}