Java BigDecimal Encode encodePackedBCD(BigDecimal v, int decimals, int length)

Description

Convert from BigDecimal to packed BCD.

License

Apache License

Parameter

Parameter	Description
v	BigDecimal object
decimals	implied decimals
length	length

Return

byte array with packed BCD

Declaration

public static byte[] encodePackedBCD(BigDecimal v, int decimals, int length) 

Method Source Code

//package com.java2s;
/*// ww w  .ja va2s  .co  m
 * Copyright 2009 Arne Vajh?j.
 * 
 * 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. 
 */

import java.math.BigDecimal;

public class Main {
    /**
     * Convert from BigDecimal to packed BCD. 
     * @param v BigDecimal object
     * @param decimals implied decimals
     * @param length length
     * @return byte array with packed BCD
     */
    public static byte[] encodePackedBCD(BigDecimal v, int decimals, int length) {
        long v2 = v.scaleByPowerOfTen(decimals).longValue();
        byte[] res = new byte[length];
        int low = 12;
        if (v2 < 0) {
            low = 13;
            v2 = -v2;
        }
        int high = (int) (v2 % 10);
        v2 /= 10;
        res[res.length - 1] = (byte) (high << 4 | low);
        for (int i = res.length - 2; i >= 0; i--) {
            low = (int) (v2 % 10);
            v2 /= 10;
            high = (int) (v2 % 10);
            v2 /= 10;
            res[i] = (byte) (high << 4 | low);
        }
        return res;
    }
}

Related

1. encodeImage(BufferedImage bufferedImage, File file)
2. encodeRealNumberRange(BigDecimal number, int maxNumDigits, BigDecimal offsetValue)
3. encodeRealNumberRange(BigDecimal number, int maxNumDigits, BigDecimal offsetValue)