Java BigDecimal valueOf(final BigDecimal value)

Description

value Of

License

Apache License

Declaration

public static BigDecimal valueOf(final BigDecimal value) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.math.BigDecimal;
import java.math.BigInteger;

import java.util.Arrays;

public class Main {
    /**/*ww w  .j a  v  a2s .c  om*/
     * adopted from <a href=
     * "https://forum.processing.org/two/discussion/10384/bigdecimal-to-byte-array">
     * orthoptera (apr 2015)</a>
     * 
     * @param raw big-endian two's-complement binary representation with first 4
     *            bytes representing the scale. The value of the
     *            {@code BigDecimal} is
     *            <tt>(unscaledVal &times; 10<sup>-scale</sup>)</tt>.
     * @return a {@link BigDecimal}
     * @see BigInteger#BigInteger(byte[])
     * @see BigDecimal#BigDecimal(BigInteger,int)
     */
    public static BigDecimal valueOf(final byte[] raw) {
        // read scale from first 4 bytes
        final int scale = (raw[0] & 0xFF) << 24 | (raw[1] & 0xFF) << 16 | (raw[2] & 0xFF) << 8 | (raw[3] & 0xFF);
        final byte[] subset = Arrays.copyOfRange(raw, 4, raw.length);
        final BigInteger unscaled = new BigInteger(subset);
        return new BigDecimal(unscaled, scale);
    }

    public static BigDecimal valueOf(final BigDecimal value) {
        return value;
    }

    public static BigDecimal valueOf(final BigInteger value) {
        return valueOf(value.longValueExact());
    }

    public static BigDecimal valueOf(final long value) {
        return BigDecimal.valueOf(value);
    }

    public static BigDecimal valueOf(final Number value) {
        return value instanceof BigDecimal ? valueOf((BigDecimal) value)
                : value instanceof Long || value instanceof Integer || value instanceof Short
                        || value instanceof Byte ? valueOf(value.longValue())
                                : value instanceof BigInteger ? valueOf((BigInteger) value)
                                        : BigDecimal.valueOf(value.doubleValue());
    }
}

Related

1. tryParseBigDecimal(Object val, BigDecimal defaultVal)
2. tryToStoreAsIntegerBigDecimal(Object ob)
3. tryToStoreAsRealBigDecimal(Object ob)
4. unformattedFromBigDecimal(BigDecimal n)
5. unformattedToBigDecimal(String str)
6. writeBigDecimal(BigDecimal val, DataOutput out)
7. writeBigDecimal(final OutputStream out, @Nullable final BigDecimal value)
8. zeroOrMore(BigDecimal decimal)