// C++ program that is called from Java
//
// Matthew Mead
// Monday, February 01, 1999 1:03 PM

#include <stdio.h>         
#include "MathFuncs.h"    

JNIEXPORT jdouble JNICALL Java_MathFuncs_calculateAreaOfCircle(JNIEnv *env, jobject obj, jdouble radius) 
{
  const jdouble PI = 3.1415926535;
  jdouble area =  PI * (radius * radius);
  return area;
}