79 lines
1.6 KiB
C++
79 lines
1.6 KiB
C++
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// Copyright (C) 2009-2012 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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//! \addtogroup fn_qr
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//! @{
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//! QR decomposition
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template<typename T1>
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inline
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bool
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qr
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(
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Mat<typename T1::elem_type>& Q,
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Mat<typename T1::elem_type>& R,
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const Base<typename T1::elem_type,T1>& X,
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const typename arma_blas_type_only<typename T1::elem_type>::result* junk = 0
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)
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{
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arma_extra_debug_sigprint();
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arma_ignore(junk);
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arma_debug_check( (&Q == &R), "qr(): Q and R are the same object");
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const bool status = auxlib::qr(Q, R, X);
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if(status == false)
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{
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Q.reset();
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R.reset();
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arma_debug_warn("qr(): decomposition failed");
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}
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return status;
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}
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//! economical QR decomposition
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template<typename T1>
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inline
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bool
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qr_econ
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(
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Mat<typename T1::elem_type>& Q,
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Mat<typename T1::elem_type>& R,
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const Base<typename T1::elem_type,T1>& X,
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const typename arma_blas_type_only<typename T1::elem_type>::result* junk = 0
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)
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{
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arma_extra_debug_sigprint();
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arma_ignore(junk);
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arma_debug_check( (&Q == &R), "qr_econ(): Q and R are the same object");
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const bool status = auxlib::qr_econ(Q, R, X);
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if(status == false)
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{
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Q.reset();
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R.reset();
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arma_debug_warn("qr_econ(): decomposition failed");
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}
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return status;
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}
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//! @}
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