/* ************************************************************************
 * Copyright (c) 2018 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#include "math_functions.hpp"
#include "def.hpp"

#include <limits>
#include <math.h>
#include <stdlib.h>

namespace rocalution
{

    double rocalution_double(const int& val)
    {
        return static_cast<double>(val);
    }
    double rocalution_double(const float& val)
    {
        return static_cast<double>(val);
    }
    double rocalution_double(const double& val)
    {
        return val;
    }
    double rocalution_double(const std::complex<float>& val)
    {
        return static_cast<double>(val.real());
    }
    double rocalution_double(const std::complex<double>& val)
    {
        return val.real();
    }

    template <typename ValueType>
    ValueType rocalution_eps(void)
    {
        return std::numeric_limits<ValueType>::epsilon();
    }

    template <typename ValueType>
    bool operator<(const std::complex<ValueType>& lhs, const std::complex<ValueType>& rhs)
    {
        if(&lhs == &rhs)
        {
            return false;
        }

        assert(lhs.imag() == rhs.imag() && lhs.imag() == static_cast<ValueType>(0));

        return lhs.real() < rhs.real();
    }

    template <typename ValueType>
    bool operator>(const std::complex<ValueType>& lhs, const std::complex<ValueType>& rhs)
    {
        if(&lhs == &rhs)
        {
            return false;
        }

        assert(lhs.imag() == rhs.imag() && lhs.imag() == static_cast<ValueType>(0));

        return lhs.real() > rhs.real();
    }

    template <typename ValueType>
    bool operator<=(const std::complex<ValueType>& lhs, const std::complex<ValueType>& rhs)
    {
        if(&lhs == &rhs)
        {
            return true;
        }

        assert(lhs.imag() == rhs.imag() && lhs.imag() == static_cast<ValueType>(0));

        return lhs.real() <= rhs.real();
    }

    template <typename ValueType>
    bool operator>=(const std::complex<ValueType>& lhs, const std::complex<ValueType>& rhs)
    {
        if(&lhs == &rhs)
        {
            return true;
        }

        assert(lhs.imag() == rhs.imag() && lhs.imag() == static_cast<ValueType>(0));

        return lhs.real() >= rhs.real();
    }

    template double               rocalution_eps(void);
    template float                rocalution_eps(void);
    template std::complex<double> rocalution_eps(void);
    template std::complex<float>  rocalution_eps(void);

    template bool operator<(const std::complex<float>& lhs, const std::complex<float>& rhs);
    template bool operator<(const std::complex<double>& lhs, const std::complex<double>& rhs);

    template bool operator>(const std::complex<float>& lhs, const std::complex<float>& rhs);
    template bool operator>(const std::complex<double>& lhs, const std::complex<double>& rhs);

    template bool operator<=(const std::complex<float>& lhs, const std::complex<float>& rhs);
    template bool operator<=(const std::complex<double>& lhs, const std::complex<double>& rhs);

    template bool operator>=(const std::complex<float>& lhs, const std::complex<float>& rhs);
    template bool operator>=(const std::complex<double>& lhs, const std::complex<double>& rhs);

} // namespace rocalution