/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.nashorn.internal.objects;

import jdk.nashorn.internal.objects.annotations.Attribute;

import jdk.nashorn.internal.objects.annotations.Function;

import jdk.nashorn.internal.objects.annotations.Property;

import jdk.nashorn.internal.objects.annotations.ScriptClass;

import jdk.nashorn.internal.objects.annotations.SpecializedFunction;

import jdk.nashorn.internal.objects.annotations.Where;

import jdk.nashorn.internal.runtime.JSType;

import jdk.nashorn.internal.runtime.PropertyMap;

import jdk.nashorn.internal.runtime.ScriptObject;

/**

 * ECMA 15.8 The Math Object

 *

 */

@ScriptClass("Math")

public final class NativeMath extends ScriptObject {

    // initialized by nasgen

    @SuppressWarnings("unused")

    private static PropertyMap $nasgenmap$;

    private NativeMath() {

        // don't create me!

        throw new UnsupportedOperationException();

    }

    /** ECMA 15.8.1.1 - E, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double E = Math.E;

    /** ECMA 15.8.1.2 - LN10, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double LN10 = 2.302585092994046;

    /** ECMA 15.8.1.3 - LN2, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double LN2 = 0.6931471805599453;

    /** ECMA 15.8.1.4 - LOG2E, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double LOG2E = 1.4426950408889634;

    /** ECMA 15.8.1.5 - LOG10E, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double LOG10E = 0.4342944819032518;

    /** ECMA 15.8.1.6 - PI, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double PI = Math.PI;

    /** ECMA 15.8.1.7 - SQRT1_2, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double SQRT1_2 = 0.7071067811865476;

    /** ECMA 15.8.1.8 - SQRT2, always a double constant. Not writable or configurable */

    @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT, where = Where.CONSTRUCTOR)

    public static final double SQRT2 = 1.4142135623730951;

    /**

     * ECMA 15.8.2.1 abs(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return abs of value

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double abs(final Object self, final Object x) {

        return Math.abs(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.1 abs(x) - specialization for int values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return abs of argument

     */

    @SpecializedFunction

    }

    /**

     * ECMA 15.8.2.1 abs(x) - specialization for long values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return abs of argument

     */

    @SpecializedFunction

    public static long abs(final Object self, final long x) {

        return Math.abs(x);

    }

    /**

     * ECMA 15.8.2.1 abs(x) - specialization for double values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return abs of argument

     */

    @SpecializedFunction

    public static double abs(final Object self, final double x) {

        return Math.abs(x);

    }

    /**

     * ECMA 15.8.2.2 acos(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return acos of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double acos(final Object self, final Object x) {

        return Math.acos(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.2 acos(x) - specialization for double values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return acos of argument

     */

    @SpecializedFunction

    public static double acos(final Object self, final double x) {

        return Math.acos(x);

    }

    /**

     * ECMA 15.8.2.3 asin(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return asin of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double asin(final Object self, final Object x) {

        return Math.asin(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.3 asin(x) - specialization for double values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return asin of argument

     */

    @SpecializedFunction

    public static double asin(final Object self, final double x) {

        return Math.asin(x);

    }

    /**

     * ECMA 15.8.2.4 atan(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return atan of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double atan(final Object self, final Object x) {

        return Math.atan(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.4 atan(x) - specialization for double values

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return atan of argument

     */

    @SpecializedFunction

    public static double atan(final Object self, final double x) {

        return Math.atan(x);

    }

    /**

     * ECMA 15.8.2.5 atan2(x,y)

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return atan2 of x and y

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double atan2(final Object self, final Object y, final Object x) {

        return Math.atan2(JSType.toNumber(y), JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.5 atan2(x,y) - specialization for double values

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return atan2 of x and y

     */

    @SpecializedFunction

    public static double atan2(final Object self, final double y, final double x) {

        return Math.atan2(y,x);

    }

    /**

     * ECMA 15.8.2.6 ceil(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return ceil of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double ceil(final Object self, final Object x) {

        return Math.ceil(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.6 ceil(x) - specialized version for ints

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return ceil of argument

     */

    @SpecializedFunction

    public static int ceil(final Object self, final int x) {

        return x;

    }

    /**

     * ECMA 15.8.2.6 ceil(x) - specialized version for longs

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return ceil of argument

     */

    @SpecializedFunction

    public static long ceil(final Object self, final long x) {

        return x;

    }

    /**

     * ECMA 15.8.2.6 ceil(x) - specialized version for doubles

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return ceil of argument

     */

    @SpecializedFunction

    public static double ceil(final Object self, final double x) {

        return Math.ceil(x);

    }

    /**

     * ECMA 15.8.2.7 cos(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return cos of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double cos(final Object self, final Object x) {

        return Math.cos(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.7 cos(x) - specialized version for doubles

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return cos of argument

     */

    @SpecializedFunction

    public static double cos(final Object self, final double x) {

        return Math.cos(x);

    }

    /**

     * ECMA 15.8.2.8 exp(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return exp of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double exp(final Object self, final Object x) {

        return Math.exp(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.9 floor(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return floor of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double floor(final Object self, final Object x) {

        return Math.floor(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.9 floor(x) - specialized version for ints

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return floor of argument

     */

    @SpecializedFunction

    public static int floor(final Object self, final int x) {

        return x;

    }

    /**

     * ECMA 15.8.2.9 floor(x) - specialized version for longs

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return floor of argument

     */

    @SpecializedFunction

    public static long floor(final Object self, final long x) {

        return x;

    }

    /**

     * ECMA 15.8.2.9 floor(x) - specialized version for doubles

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return floor of argument

     */

    @SpecializedFunction

    public static double floor(final Object self, final double x) {

        return Math.floor(x);

    }

    /**

     * ECMA 15.8.2.10 log(x)

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return log of argument

     */

    @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double log(final Object self, final Object x) {

        return Math.log(JSType.toNumber(x));

    }

    /**

     * ECMA 15.8.2.10 log(x) - specialized version for doubles

     *

     * @param self  self reference

     * @param x     argument

     *

     * @return log of argument

     */

    @SpecializedFunction

    public static double log(final Object self, final double x) {

        return Math.log(x);

    }

    /**

     * ECMA 15.8.2.11 max(x)

     *

     * @param self  self reference

     * @param args  arguments

     *

     * @return the largest of the arguments, {@link Double#NEGATIVE_INFINITY} if no args given, or identity if one arg is given

     */

    @Function(arity = 2, attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double max(final Object self, final Object... args) {

        switch (args.length) {

        case 0:

            return Double.NEGATIVE_INFINITY;

        case 1:

            return JSType.toNumber(args[0]);

        default:

            double res = JSType.toNumber(args[0]);

            for (int i = 1; i < args.length; i++) {

                res = Math.max(res, JSType.toNumber(args[i]));

            }

            return res;

        }

    }

    /**

     * ECMA 15.8.2.11 max(x) - specialized no args version

     *

     * @param self  self reference

     *

     * @return {@link Double#NEGATIVE_INFINITY}

     */

    @SpecializedFunction

    public static double max(final Object self) {

        return Double.NEGATIVE_INFINITY;

    }

    /**

     * ECMA 15.8.2.11 max(x) - specialized version for ints

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return largest value of x and y

     */

    @SpecializedFunction

    public static int max(final Object self, final int x, final int y) {

        return Math.max(x, y);

    }

    /**

     * ECMA 15.8.2.11 max(x) - specialized version for longs

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return largest value of x and y

     */

    @SpecializedFunction

    public static long max(final Object self, final long x, final long y) {

        return Math.max(x, y);

    }

    /**

     * ECMA 15.8.2.11 max(x) - specialized version for doubles

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return largest value of x and y

     */

    @SpecializedFunction

    public static double max(final Object self, final double x, final double y) {

        return Math.max(x, y);

    }

    /**

     * ECMA 15.8.2.11 max(x) - specialized version for two Object args

     *

     * @param self  self reference

     * @param x     first argument

     * @param y     second argument

     *

     * @return largest value of x and y

     */

    @SpecializedFunction

    public static double max(final Object self, final Object x, final Object y) {

        return Math.max(JSType.toNumber(x), JSType.toNumber(y));

    }

    /**

     * ECMA 15.8.2.12 min(x)

     *

     * @param self  self reference

     * @param args  arguments

     *

     * @return the smallest of the arguments, {@link Double#NEGATIVE_INFINITY} if no args given, or identity if one arg is given

     */

    @Function(arity = 2, attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)

    public static double min(final Object self, final Object... args) {

        switch (args.length) {

        case 0:

            return Double.POSITIVE_INFINITY;

        case 1:

            return JSType.toNumber(args[0]);

        default:

            double res = JSType.toNumber(args[0]);

            for (int i = 1; i < args.length; i++) {

                res = Math.min(res, JSType.toNumber(args[i]));

            }