62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
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// Copyright (C) 2013-2015 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_cond
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//! @{
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template<typename T1>
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arma_warn_unused
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inline
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typename enable_if2<is_supported_blas_type<typename T1::elem_type>::value, typename T1::pod_type>::result
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cond(const Base<typename T1::elem_type, T1>& X)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::pod_type T;
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Col<T> S;
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const bool status = auxlib::svd_dc(S, X);
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if(status == false)
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{
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arma_debug_warn("cond(): svd failed");
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return T(0);
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}
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if(S.n_elem > 0)
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{
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return T( max(S) / min(S) );
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}
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else
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{
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return T(0);
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}
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}
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template<typename T1>
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arma_warn_unused
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inline
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typename enable_if2<is_supported_blas_type<typename T1::elem_type>::value, typename T1::pod_type>::result
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rcond(const Base<typename T1::elem_type, T1>& X)
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{
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arma_extra_debug_sigprint();
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return auxlib::rcond(X.get_ref());
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}
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//! @}
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