Double.h

Go to the documentation of this file.

/*
 * 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.
 */

#ifndef _DECAF_LANG_DOUBLE_H_
#define _DECAF_LANG_DOUBLE_H_

#include <decaf/util/Config.h>
#include <decaf/lang/Comparable.h>
#include <decaf/lang/Number.h>
#include <decaf/lang/exceptions/NumberFormatException.h>
#include <string>

namespace decaf{
namespace lang{

    class DECAF_API Double : public Number,
                             public Comparable<Double>,
                             public Comparable<double> {
    private:

        double value;

    public:

        static const int SIZE;

        static const double MAX_VALUE;

        static const double MIN_VALUE;

        static const double NaN;

        static const double POSITIVE_INFINITY;

        static const double NEGATIVE_INFINITY;

    public:

        Double( double value );

        Double( const std::string& value );

        virtual ~Double() {}

        virtual int compareTo( const Double& d ) const;

        bool equals( const Double& d ) const {
            return this->value == d.value;
        }

        virtual bool operator==( const Double& d ) const {
            return this->value == d.value;
        }

        virtual bool operator<( const Double& d ) const {
            return this->value < d.value;
        }

        virtual int compareTo( const double& d ) const;

        bool equals( const double& d ) const {
            return this->value == d;
        }

        virtual bool operator==( const double& d ) const {
            return this->value == d;
        }

        virtual bool operator<( const double& d ) const {
            return this->value < d;
        }

        std::string toString() const;

        virtual double doubleValue() const {
            return this->value;
        }

        virtual float floatValue() const {
            return (float)this->value;
        }

        virtual unsigned char byteValue() const {
            return (unsigned char)this->value;
        }

        virtual short shortValue() const {
            return (short)this->value;
        }

        virtual int intValue() const {
            return (int)this->value;
        }

        virtual long long longValue() const {
            return (long long)this->value;
        }

        bool isInfinite() const;

        bool isNaN() const;

    public:  // Statics

        static int compare( double d1, double d2 );

        static long long doubleToLongBits( double value );

        static long long doubleToRawLongBits( double value );

        static bool isInfinite( double value );

        static bool isNaN( double value );

        static double longBitsToDouble( long long bits );

        static double parseDouble( const std::string value );

        static std::string toHexString( double value );

        static std::string toString( double value );

        static Double valueOf( double value );

        static Double valueOf( const std::string& value );

    private:

        static const long long DOUBLE_SIGN_MASK = 0x8000000000000000LL;
        static const long long DOUBLE_EXPONENT_MASK = 0x7FF0000000000000LL;
        static const long long DOUBLE_MANTISSA_MASK = 0x000FFFFFFFFFFFFFLL;
        static const long long DOUBLE_NAN_BITS =
            DOUBLE_EXPONENT_MASK | 0x0008000000000000LL;

    };

}}

#endif /*_DECAF_LANG_DOUBLE_H_*/