Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Returns the appropriate number of decimals to be used for the provided
     * number.
     *
     * @param number
     * @return
     */
    public static int getDecimals(float number) {

        float i = roundToNextSignificant(number);
        return (int) Math.ceil(-Math.log10(i)) + 2;
    }

    /**
     * rounds the given number to the next significant number
     *
     * @param number
     * @return
     */
    public static float roundToNextSignificant(double number) {
        final float d = (float) Math.ceil((float) Math.log10(number < 0 ? -number : number));
        final int pw = 1 - (int) d;
        final float magnitude = (float) Math.pow(10, pw);
        final long shifted = Math.round(number * magnitude);
        return shifted / magnitude;
    }
}