139 lines
3.2 KiB
C++
139 lines
3.2 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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//
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// 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_inv
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//! @{
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template<typename T1>
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arma_warn_unused
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arma_inline
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typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, const Op<T1, op_inv_gen_default> >::result
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inv
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(
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const Base<typename T1::elem_type,T1>& X
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)
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{
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arma_extra_debug_sigprint();
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return Op<T1, op_inv_gen_default>(X.get_ref());
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}
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template<typename T1>
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inline
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typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, bool >::result
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inv
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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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)
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{
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arma_extra_debug_sigprint();
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const bool status = op_inv_gen_default::apply_direct(out, X.get_ref(), "inv()");
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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, "inv(): matrix is singular");
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}
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return status;
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}
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template<typename T1>
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arma_warn_unused
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arma_inline
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typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, const Op<T1, op_inv_gen_full> >::result
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inv
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(
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const Base<typename T1::elem_type,T1>& X,
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const inv_opts::opts& opts
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)
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{
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arma_extra_debug_sigprint();
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return Op<T1, op_inv_gen_full>(X.get_ref(), opts.flags, 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_supported_blas_type<typename T1::elem_type>::value, bool >::result
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inv
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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 inv_opts::opts& opts
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)
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{
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arma_extra_debug_sigprint();
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const bool status = op_inv_gen_full::apply_direct(out, X.get_ref(), "inv()", opts.flags);
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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, "inv(): matrix is singular");
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}
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return status;
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}
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template<typename T1>
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inline
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typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, bool >::result
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inv
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(
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Mat<typename T1::elem_type>& out_inv,
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typename T1::pod_type& out_rcond,
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const Base<typename T1::elem_type,T1>& X
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)
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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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op_inv_gen_state<T> inv_state;
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const bool status = op_inv_gen_rcond::apply_direct(out_inv, inv_state, X.get_ref());
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out_rcond = inv_state.rcond;
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if(status == false)
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{
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out_rcond = T(0);
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out_inv.soft_reset();
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arma_debug_warn_level(3, "inv(): matrix is singular");
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}
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return status;
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}
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//! @}
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