gebrd.h

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// ========================================================================= //
// This file is part of MyraMath, copyright (c) 2014-2019 by Ryan A Chilton  //
// and distributed by MyraCore, LLC. See LICENSE.txt for license terms.      //
// ========================================================================= //

#ifndef MYRAMATH_DENSE_GEBRD_H
#define MYRAMATH_DENSE_GEBRD_H

#include <myramath/MYRAMATH_EXPORT.h>
#include <myramath/utility/Number.h>

#include <utility>

namespace myra {

// Forward declarations.
template<class Number> class MatrixRange;
template<class Number> class VectorRange;
template<class Number> class Vector;

// Overwrites the diagonal and first superdiagonal (I >= J) or subdiagonal (I < J) of A with B. The lower triangle of A is overwritten with the 
// Householder column vectors of Q (like geqrf), and the upper triangle of A is overwritten with the Householder row vectors of P (like gelqf).
MYRAMATH_EXPORT std::pair<Vector<NumberS>,Vector<NumberS> > gebrd_inplace(const MatrixRange<NumberS>& A);
MYRAMATH_EXPORT std::pair<Vector<NumberD>,Vector<NumberD> > gebrd_inplace(const MatrixRange<NumberD>& A);
MYRAMATH_EXPORT std::pair<Vector<NumberC>,Vector<NumberC> > gebrd_inplace(const MatrixRange<NumberC>& A);
MYRAMATH_EXPORT std::pair<Vector<NumberZ>,Vector<NumberZ> > gebrd_inplace(const MatrixRange<NumberZ>& A);

} // namespace

#endif