Truncates a float number f to decimal Places . - Android java.lang

Android examples for java.lang:Math

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Description

Truncates a float number f to decimal Places .

Demo Code

/*/*from  ww  w .jav  a  2 s .  c  o m*/
 * Copyright 2014 Flavio Faria
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;

public class Main {
    /**
     * Truncates a float number {@code f} to {@code decimalPlaces}.
     * @param f the number to be truncated.
     * @param decimalPlaces the amount of decimals that {@code f}
     * will be truncated to.
     * @return a truncated representation of {@code f}.
     */
    protected static float truncate(float f, int decimalPlaces) {
        float decimalShift = (float) Math.pow(10, decimalPlaces);
        return Math.round(f * decimalShift) / decimalShift;
    }
}

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