Java Rounding Mode getOppositeRoundingMode(RoundingMode roundingMode)

Description

get Opposite Rounding Mode

License

Open Source License

Declaration

public static RoundingMode getOppositeRoundingMode(RoundingMode roundingMode) 

Method Source Code

//package com.java2s;
/**/* ww  w  .  j  a  v a 2s . c  o  m*/
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 decimal4j (tools4j), Marco Terzer
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.math.RoundingMode;

public class Main {
    public static RoundingMode getOppositeRoundingMode(RoundingMode roundingMode) {
        switch (roundingMode) {
        case UP:
            return RoundingMode.DOWN;
        case DOWN:
            return RoundingMode.UP;
        case CEILING:
            return RoundingMode.FLOOR;
        case FLOOR:
            return RoundingMode.CEILING;
        case HALF_UP:
            return RoundingMode.HALF_DOWN;
        case HALF_DOWN:
            return RoundingMode.HALF_UP;
        case HALF_EVEN:
            return RoundingMode.HALF_EVEN;//HALF_UNEVEN?
        case UNNECESSARY:
            return RoundingMode.UNNECESSARY;
        default:
            throw new IllegalArgumentException("unsupported rounding mode: " + roundingMode);
        }
    }
}

Related

1. normalizeRoundingMode(String roundingMode)
2. roundHalfUp(double value)
3. sqrt(int x, RoundingMode mode)