class FuncTest{

static class SinFunc extends RFunc{

public double evaluate(double x){

return(Math.sin(x));

}

}

static class ExpFunc extends RFunc{

public double evaluate(double x){

return(Math.exp(x) - 2.0);

}

}

static class LogFunc extends RFunc{

public double evaluate(double x){

return(Math.log(x) - 1);

}

}

public static void main(String[] args){

RFunc sin = new SinFunc();

RFunc exp = new ExpFunc();

RFunc log = new LogFunc();

double x;

x = sin.bracketRoot(1.0,4.0,0.0000000001);

System.out.println((float)x);

System.out.println((float)Math.PI);

x = exp.bracketRoot(0.0,4.0,0.0000000001);

System.out.println((float)x);

System.out.println((float)Math.log(2));

x = log.bracketRoot(1.0,4.0,0.0000000001);

System.out.println((float)x);

System.out.println((float)Math.E);

x = sin.defIntegral(0.0,Math.PI/2,1024*1024);

System.out.println((float)x);

System.out.println((float)1.0);

x = exp.defIntegral(0.0,2.0,1024*1024);

System.out.println((float)x);

System.out.println((float)(Math.exp(2) - 5));

x = log.defIntegral(1.0,2.0,1024*1024);

System.out.println((float)x);

System.out.println((float)(2*Math.log(2) - 2));

}

}