93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup fn_pinv
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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_real<typename T1::pod_type>::value, const Op<T1, op_pinv> >::result
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pinv
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(
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const Base<typename T1::elem_type,T1>& X,
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const typename T1::pod_type tol = 0.0,
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const char* method = nullptr
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)
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{
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arma_extra_debug_sigprint();
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typedef typename T1::elem_type eT;
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uword method_id = 0; // default setting
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if(method != nullptr)
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{
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const char sig = method[0];
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arma_debug_check( ((sig != 's') && (sig != 'd')), "pinv(): unknown method specified" );
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if(sig == 's') { method_id = 1; }
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if(sig == 'd') { method_id = 2; }
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}
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return Op<T1, op_pinv>(X.get_ref(), eT(tol), method_id, uword(0));
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}
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template<typename T1>
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inline
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typename enable_if2< is_real<typename T1::pod_type>::value, bool >::result
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pinv
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(
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Mat<typename T1::elem_type>& out,
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const Base<typename T1::elem_type,T1>& X,
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const typename T1::pod_type tol = 0.0,
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const char* method = nullptr
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)
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{
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arma_extra_debug_sigprint();
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uword method_id = 0; // default setting
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if(method != nullptr)
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{
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const char sig = method[0];
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arma_debug_check( ((sig != 's') && (sig != 'd')), "pinv(): unknown method specified" );
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if(sig == 's') { method_id = 1; }
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if(sig == 'd') { method_id = 2; }
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}
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const bool status = op_pinv::apply_direct(out, X.get_ref(), tol, method_id);
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if(status == false)
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{
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out.soft_reset();
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arma_debug_warn_level(3, "pinv(): svd failed");
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}
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return status;
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}
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//! @}
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