home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (Decimal64.java)

This example Java source code file (Decimal64.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

comparable, decimal64, dimensionmismatchexception, double, nan, negative_infinity, number, object, one, override, positive_infinity, realfieldelement, string, zero

The Decimal64.java Java example source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.commons.math3.util;

import org.apache.commons.math3.RealFieldElement;
import org.apache.commons.math3.Field;
import org.apache.commons.math3.exception.DimensionMismatchException;

/**
 * This class wraps a {@code double} value in an object. It is similar to the
 * standard class {@link Double}, while also implementing the
 * {@link RealFieldElement} interface.
 *
 * @since 3.1
 */
public class Decimal64 extends Number
                       implements RealFieldElement<Decimal64>, Comparable {

    /** The constant value of {@code 0d} as a {@code Decimal64}. */
    public static final Decimal64 ZERO;

    /** The constant value of {@code 1d} as a {@code Decimal64}. */
    public static final Decimal64 ONE;

    /**
     * The constant value of {@link Double#NEGATIVE_INFINITY} as a
     * {@code Decimal64}.
     */
    public static final Decimal64 NEGATIVE_INFINITY;

    /**
     * The constant value of {@link Double#POSITIVE_INFINITY} as a
     * {@code Decimal64}.
     */
    public static final Decimal64 POSITIVE_INFINITY;

    /** The constant value of {@link Double#NaN} as a {@code Decimal64}. */
    public static final Decimal64 NAN;

    /** */
    private static final long serialVersionUID = 20120227L;

    static {
        ZERO = new Decimal64(0d);
        ONE = new Decimal64(1d);
        NEGATIVE_INFINITY = new Decimal64(Double.NEGATIVE_INFINITY);
        POSITIVE_INFINITY = new Decimal64(Double.POSITIVE_INFINITY);
        NAN = new Decimal64(Double.NaN);
    }

    /** The primitive {@code double} value of this object. */
    private final double value;

    /**
     * Creates a new instance of this class.
     *
     * @param x the primitive {@code double} value of the object to be created
     */
    public Decimal64(final double x) {
        this.value = x;
    }

    /*
     * Methods from the FieldElement interface.
     */

    /** {@inheritDoc} */
    public Field<Decimal64> getField() {
        return Decimal64Field.getInstance();
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.add(a).equals(new Decimal64(this.doubleValue()
     * + a.doubleValue()))}.
     */
    public Decimal64 add(final Decimal64 a) {
        return new Decimal64(this.value + a.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.subtract(a).equals(new Decimal64(this.doubleValue()
     * - a.doubleValue()))}.
     */
    public Decimal64 subtract(final Decimal64 a) {
        return new Decimal64(this.value - a.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.negate().equals(new Decimal64(-this.doubleValue()))}.
     */
    public Decimal64 negate() {
        return new Decimal64(-this.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.multiply(a).equals(new Decimal64(this.doubleValue()
     * * a.doubleValue()))}.
     */
    public Decimal64 multiply(final Decimal64 a) {
        return new Decimal64(this.value * a.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.multiply(n).equals(new Decimal64(n * this.doubleValue()))}.
     */
    public Decimal64 multiply(final int n) {
        return new Decimal64(n * this.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.divide(a).equals(new Decimal64(this.doubleValue()
     * / a.doubleValue()))}.
     *
     */
    public Decimal64 divide(final Decimal64 a) {
        return new Decimal64(this.value / a.value);
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation strictly enforces
     * {@code this.reciprocal().equals(new Decimal64(1.0
     * / this.doubleValue()))}.
     */
    public Decimal64 reciprocal() {
        return new Decimal64(1.0 / this.value);
    }

    /*
     * Methods from the Number abstract class
     */

    /**
     * {@inheritDoc}
     *
     * The current implementation performs casting to a {@code byte}.
     */
    @Override
    public byte byteValue() {
        return (byte) value;
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation performs casting to a {@code short}.
     */
    @Override
    public short shortValue() {
        return (short) value;
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation performs casting to a {@code int}.
     */
    @Override
    public int intValue() {
        return (int) value;
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation performs casting to a {@code long}.
     */
    @Override
    public long longValue() {
        return (long) value;
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation performs casting to a {@code float}.
     */
    @Override
    public float floatValue() {
        return (float) value;
    }

    /** {@inheritDoc} */
    @Override
    public double doubleValue() {
        return value;
    }

    /*
     * Methods from the Comparable interface.
     */

    /**
     * {@inheritDoc}
     *
     * The current implementation returns the same value as
     * <center> {@code new Double(this.doubleValue()).compareTo(new
     * Double(o.doubleValue()))} </center>
     *
     * @see Double#compareTo(Double)
     */
    public int compareTo(final Decimal64 o) {
        return Double.compare(this.value, o.value);
    }

    /*
     * Methods from the Object abstract class.
     */

    /** {@inheritDoc} */
    @Override
    public boolean equals(final Object obj) {
        if (obj instanceof Decimal64) {
            final Decimal64 that = (Decimal64) obj;
            return Double.doubleToLongBits(this.value) == Double
                    .doubleToLongBits(that.value);
        }
        return false;
    }

    /**
     * {@inheritDoc}
     *
     * The current implementation returns the same value as
     * {@code new Double(this.doubleValue()).hashCode()}
     *
     * @see Double#hashCode()
     */
    @Override
    public int hashCode() {
        long v = Double.doubleToLongBits(value);
        return (int) (v ^ (v >>> 32));
    }

    /**
     * {@inheritDoc}
     *
     * The returned {@code String} is equal to
     * {@code Double.toString(this.doubleValue())}
     *
     * @see Double#toString(double)
     */
    @Override
    public String toString() {
        return Double.toString(value);
    }

    /*
     * Methods inspired by the Double class.
     */

    /**
     * Returns {@code true} if {@code this} double precision number is infinite
     * ({@link Double#POSITIVE_INFINITY} or {@link Double#NEGATIVE_INFINITY}).
     *
     * @return {@code true} if {@code this} number is infinite
     */
    public boolean isInfinite() {
        return Double.isInfinite(value);
    }

    /**
     * Returns {@code true} if {@code this} double precision number is
     * Not-a-Number ({@code NaN}), false otherwise.
     *
     * @return {@code true} if {@code this} is {@code NaN}
     */
    public boolean isNaN() {
        return Double.isNaN(value);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public double getReal() {
        return value;
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 add(final double a) {
        return new Decimal64(value + a);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 subtract(final double a) {
        return new Decimal64(value - a);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 multiply(final double a) {
        return new Decimal64(value * a);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 divide(final double a) {
        return new Decimal64(value / a);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 remainder(final double a) {
        return new Decimal64(FastMath.IEEEremainder(value, a));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 remainder(final Decimal64 a) {
        return new Decimal64(FastMath.IEEEremainder(value, a.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 abs() {
        return new Decimal64(FastMath.abs(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 ceil() {
        return new Decimal64(FastMath.ceil(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 floor() {
        return new Decimal64(FastMath.floor(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 rint() {
        return new Decimal64(FastMath.rint(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public long round() {
        return FastMath.round(value);
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 signum() {
        return new Decimal64(FastMath.signum(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 copySign(final Decimal64 sign) {
        return new Decimal64(FastMath.copySign(value, sign.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 copySign(final double sign) {
        return new Decimal64(FastMath.copySign(value, sign));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 scalb(final int n) {
        return new Decimal64(FastMath.scalb(value, n));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 hypot(final Decimal64 y) {
        return new Decimal64(FastMath.hypot(value, y.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 sqrt() {
        return new Decimal64(FastMath.sqrt(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 cbrt() {
        return new Decimal64(FastMath.cbrt(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 rootN(final int n) {
        if (value < 0) {
            return new Decimal64(-FastMath.pow(-value, 1.0 / n));
        } else {
            return new Decimal64(FastMath.pow(value, 1.0 / n));
        }
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 pow(final double p) {
        return new Decimal64(FastMath.pow(value, p));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 pow(final int n) {
        return new Decimal64(FastMath.pow(value, n));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 pow(final Decimal64 e) {
        return new Decimal64(FastMath.pow(value, e.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 exp() {
        return new Decimal64(FastMath.exp(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 expm1() {
        return new Decimal64(FastMath.expm1(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 log() {
        return new Decimal64(FastMath.log(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 log1p() {
        return new Decimal64(FastMath.log1p(value));
    }

    /** Base 10 logarithm.
     * @return base 10 logarithm of the instance
     * @since 3.2
     */
    public Decimal64 log10() {
        return new Decimal64(FastMath.log10(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 cos() {
        return new Decimal64(FastMath.cos(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 sin() {
        return new Decimal64(FastMath.sin(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 tan() {
        return new Decimal64(FastMath.tan(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 acos() {
        return new Decimal64(FastMath.acos(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 asin() {
        return new Decimal64(FastMath.asin(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 atan() {
        return new Decimal64(FastMath.atan(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 atan2(final Decimal64 x) {
        return new Decimal64(FastMath.atan2(value, x.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 cosh() {
        return new Decimal64(FastMath.cosh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 sinh() {
        return new Decimal64(FastMath.sinh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 tanh() {
        return new Decimal64(FastMath.tanh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 acosh() {
        return new Decimal64(FastMath.acosh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 asinh() {
        return new Decimal64(FastMath.asinh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 atanh() {
        return new Decimal64(FastMath.atanh(value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final Decimal64[] a, final Decimal64[] b)
        throws DimensionMismatchException {
        if (a.length != b.length) {
            throw new DimensionMismatchException(a.length, b.length);
        }
        final double[] aDouble = new double[a.length];
        final double[] bDouble = new double[b.length];
        for (int i = 0; i < a.length; ++i) {
            aDouble[i] = a[i].value;
            bDouble[i] = b[i].value;
        }
        return new Decimal64(MathArrays.linearCombination(aDouble, bDouble));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final double[] a, final Decimal64[] b)
        throws DimensionMismatchException {
        if (a.length != b.length) {
            throw new DimensionMismatchException(a.length, b.length);
        }
        final double[] bDouble = new double[b.length];
        for (int i = 0; i < a.length; ++i) {
            bDouble[i] = b[i].value;
        }
        return new Decimal64(MathArrays.linearCombination(a, bDouble));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final Decimal64 a1, final Decimal64 b1,
                                       final Decimal64 a2, final Decimal64 b2) {
        return new Decimal64(MathArrays.linearCombination(a1.value, b1.value,
                                                          a2.value, b2.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final double a1, final Decimal64 b1,
                                       final double a2, final Decimal64 b2) {
        return new Decimal64(MathArrays.linearCombination(a1, b1.value,
                                                          a2, b2.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final Decimal64 a1, final Decimal64 b1,
                                       final Decimal64 a2, final Decimal64 b2,
                                       final Decimal64 a3, final Decimal64 b3) {
        return new Decimal64(MathArrays.linearCombination(a1.value, b1.value,
                                                          a2.value, b2.value,
                                                          a3.value, b3.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final double a1, final Decimal64 b1,
                                       final double a2, final Decimal64 b2,
                                       final double a3, final Decimal64 b3) {
        return new Decimal64(MathArrays.linearCombination(a1, b1.value,
                                                          a2, b2.value,
                                                          a3, b3.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final Decimal64 a1, final Decimal64 b1,
                                       final Decimal64 a2, final Decimal64 b2,
                                       final Decimal64 a3, final Decimal64 b3,
                                       final Decimal64 a4, final Decimal64 b4) {
        return new Decimal64(MathArrays.linearCombination(a1.value, b1.value,
                                                          a2.value, b2.value,
                                                          a3.value, b3.value,
                                                          a4.value, b4.value));
    }

    /** {@inheritDoc}
     * @since 3.2
     */
    public Decimal64 linearCombination(final double a1, final Decimal64 b1,
                                       final double a2, final Decimal64 b2,
                                       final double a3, final Decimal64 b3,
                                       final double a4, final Decimal64 b4) {
        return new Decimal64(MathArrays.linearCombination(a1, b1.value,
                                                          a2, b2.value,
                                                          a3, b3.value,
                                                          a4, b4.value));
    }

}

Other Java examples (source code examples)

Here is a short list of links related to this Java Decimal64.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.