int64.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2014-2016 OpenFOAM Foundation
    Copyright (C) 2016-2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    the Free Software Foundation, either version 3 of the License, or
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    You should have received a copy of the GNU General Public License
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Primitive
    int64_t

Description
    64bit signed integer

SourceFiles
    int64.C
    int64IO.C

\*---------------------------------------------------------------------------*/

#ifndef Foam_primitives_int64_H
#define Foam_primitives_int64_H

#include <cstdint>
#include <climits>
#include <cstdlib>

#include "direction.H"
#include "pTraits.H"
#include "word.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

//- A word representation of int64 value
inline word name(const int64_t val)
{
    return word(std::to_string(val), false); // Needs no stripping
}


//- A word representation of int64 value
template<>
struct nameOp<int64_t>
{
    word operator()(const int64_t val) const
    {
        return word(std::to_string(val), false); // Needs no stripping
    }
};


inline int64_t mag(const int64_t val)
{
    return ::labs(val);
}


// * * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * //

//- Read int64_t from stream
int64_t readInt64(Istream& is);

//- Parse entire buffer as a int64_t, skipping leading/trailing whitespace.
//  \return Parsed value or FatalIOError on any problem
int64_t readInt64(const char* buf);

//- Parse entire string as a int64_t, skipping leading/trailing whitespace.
//  \return Parsed value or FatalIOError on any problem
inline int64_t readInt64(const std::string& str)
{
    return readInt64(str.c_str());
}

//- Read entire buffer as a int64_t, skipping leading/trailing whitespace.
//  \return True if successful.
bool readInt64(const char* buf, int64_t& val);

//- Read entire string as a int64_t, skipping leading/trailing whitespace.
//  \return True if successful.
inline bool readInt64(const std::string& str, int64_t& val)
{
    return readInt64(str.c_str(), val);
}

//- Same as readInt64
//  \return True if successful.
inline bool read(const char* buf, int64_t& val)
{
    return readInt64(buf, val);
}

//- Same as readInt64
//  \return True if successful.
inline bool read(const std::string& str, int64_t& val)
{
    return readInt64(str, val);
}


Istream& operator>>(Istream& is, int64_t& val);
Ostream& operator<<(Ostream& os, const int64_t val);

// On Darwin:
// long is not unambiguously (int32_t | int64_t)
// - explicitly resolve for input and output
#if defined(__APPLE__)
    Istream& operator>>(Istream& is, long& val);
    Ostream& operator<<(Ostream& os, const long val);
#endif


/*---------------------------------------------------------------------------*\
                        Specialization pTraits<int64_t>
\*---------------------------------------------------------------------------*/

//- Template specialization for pTraits<int64_t>
template<>
class pTraits<int64_t>
{
    int64_t p_;

public:

    // Typedefs

        //- Component type
        typedef int64_t cmptType;

        //- Magnitude type
        typedef int64_t magType;


    // Member Constants

        //- Dimensionality of space
        static constexpr direction dim = 3;

        //- Rank of int64_t is 0
        static constexpr direction rank = 0;

        //- Number of components in int64_t is 1
        static constexpr direction nComponents = 1;


    // Static Data Members

        static const char* const typeName;
        static const char* const componentNames[];
        static const int64_t zero;
        static const int64_t one;
        static const int64_t min;
        static const int64_t max;
        static const int64_t rootMax;
        static const int64_t rootMin;


    // Constructors

        //- Copy construct from primitive
        explicit pTraits(int64_t val) noexcept
        :
            p_(val)
        {}

        //- Read construct from Istream
        explicit pTraits(Istream& is);


    // Member Functions

        //- Return the value
        operator int64_t() const noexcept { return p_; }

        //- Access the value
        operator int64_t&() noexcept { return p_; }
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //