static class Logarithm extends PostfixMathCommand {
public Logarithm() {
numberOfParameters = 1;
}
private static final double LOG_10 = Math.log(10);
public final double operation(double[] params) throws ParseException {
return Math.log(params[0]) / LOG_10;
}
}
public final void run(DoubleStack stack) {
stack.push(Math.abs(stack.pop()));
}
public final void run(DoubleStack inStack) throws ParseException {
inStack.push(Math.random());
}
public final void run(DoubleStack inStack) throws ParseException {
double param2 = inStack.pop();
double param1 = inStack.pop();
inStack.push(Math.pow(param1, param2));
}
public final void run(DoubleStack stack) throws ParseException {
stack.push(Math.sqrt(stack.pop()));
}
public final double operation(double[] params) throws ParseException {
return Math.tan(params[0]);
}
public final double operation(double[] params) throws ParseException {
return Math.log(params[0]) / LOG_10;
}
