rot.h (cxxblas/level1/rot.h)

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/*
*   Copyright (c) 2009, Michael Lehn
*
*   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.
*   3) Neither the name of the FLENS development group nor the names of
*      its contributors may be used to endorse or promote products derived
*      from this software without specific prior written permission.
*
*   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.
*/

#ifndef CXXBLAS_LEVEL1_ROT_H
#define CXXBLAS_LEVEL1_ROT_H 1

#include <cxxblas/typedefs.h>

#define HAVE_CXXBLAS_ROT  1
#define HAVE_CXXBLAS_ROTG 1

namespace cxxblas {

template <typename IndexType, typename X, typename Y, typename T>
    void
    rot(IndexType n, X *x, IndexType incX, Y *y, IndexType incY, T c, T s);

template <typename A, typename B, typename T>
    void
    rotg(A &a, B &b, T &c, T &s);

template <typename TA, typename TB, typename T>
    void
    rotg(std::complex<TA> &a, std::complex<TB> &b, T &c, std::complex<T> &s);

#ifdef HAVE_CBLAS
// srot
template <typename IndexType>
    typename If<IndexType>::isBlasCompatibleInteger
    rot(IndexType n,
        float *x, IndexType incX,
        float *y, IndexType incY,
        float c, float s);

// drot
template <typename IndexType>
    typename If<IndexType>::isBlasCompatibleInteger
    rot(IndexType n,
        double *x, IndexType incX,
        double *y, IndexType incY,
        double c, double s);

// srotg
template <typename IndexType>
    typename If<IndexType>::isBlasCompatibleInteger
    rotg(float &a, float &b, float &c, float &s);

// drotg
template <typename IndexType>
    typename If<IndexType>::isBlasCompatibleInteger
    rotg(double &a, double &b, double &c, double &s);

#endif // HAVE_CBLAS

} // namespace cxxblas

#endif // CXXBLAS_LEVEL1_ROT_H