package com.dumptruckman.test;

public class FloorTest {

    static int iterations = 5000;

    public static void main(String[] args) {
        double x = 204.75764;
        double z = -137.25428;
        System.out.println(floor(x) + " == " + cast(x));
        System.out.println(floor(z) + " == " + cast(z));
        testFloor(x);
        testFloor(z);
        testCast(x);
        testCast(z);
    }

    public static void testFloor(double loc) {
        long startTime = System.nanoTime();
        for (int i = 0; i < iterations; i++) {
            floor(loc);
        }
        long timeTaken = System.nanoTime() - startTime;
        System.out.println("Time taken: " + timeTaken / 1000 + "ms");
    }

    public static void testCast(double loc) {
        long startTime = System.nanoTime();
        for (int i = 0; i < iterations; i++) {
            cast(loc);
        }
        long timeTaken = System.nanoTime() - startTime;
        System.out.println("Time taken: " + timeTaken / 1000 + "ms");
    }

    public static int floor(double loc) {
        return (int) Math.floor(loc);
    }

    public static int cast(double loc) {
        int result = (int) loc;
        return loc < 0 ? result - 1 : result;
    }
}

// OUTPUT:
204 == 204
-138 == -138
Time taken: 3018ms
Time taken: 3231ms
Time taken: 432ms
Time taken: 487ms

// Test performed on Windows 7 Ultimate 64-bit