Sin.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2015 Soumyajit De
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those
 * of the authors and should not be interpreted as representing official policies,
 * either expressed or implied, of the Shogun Development Team.
 */

#ifndef SIN_IMPL_H_
#define SIN_IMPL_H_

#include <shogun/lib/config.h>
#include <shogun/mathematics/Math.h>
#include <string>

#ifdef HAVE_EIGEN3
#include <shogun/mathematics/eigen3.h>
#endif // HAVE_EIGEN3

#include <shogun/mathematics/linalg/internal/implementation/operations/opencl_operation.h>

namespace shogun
{

namespace linalg
{

namespace operations
{

template <typename T>
struct sin : public ocl_operation
{
    using return_type = float64_t;

    /*
     * Default constructor. Initializes the OpenCL operation
     */
    sin() : ocl_operation("return sin(element);")
    {
    }

    return_type operator () (T& val) const
    {
        return CMath::sin(val);
    }

#ifdef HAVE_EIGEN3

    using MatrixXt = Eigen::Matrix<T,Eigen::Dynamic,Eigen::Dynamic>;

    using VectorXt = Eigen::Matrix<T,Eigen::Dynamic,1>;

    using MapMatrixXt = Eigen::Map<MatrixXt>;

    using MapVectorXt = Eigen::Map<VectorXt>;

    Eigen::MatrixXd compute_using_eigen3(MapMatrixXt m) const
    {
        return m.array().template cast<double>().sin();
    }

    Eigen::VectorXd compute_using_eigen3(MapVectorXt v) const
    {
        return v.array().template cast<double>().sin();
    }
#endif // HAVE_EIGEN3
};

template <>
struct sin<complex128_t>
{
    using return_type = complex128_t;

    return_type operator () (complex128_t& val) const
    {
        return CMath::sin(val);
    }
};

}

}

}
#endif // SIN_IMPL_H_