48 lines
1.4 KiB
C++
48 lines
1.4 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_spones
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//! @{
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//! Generate a sparse matrix with the non-zero values in the same locations as in the given sparse matrix X,
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//! with the non-zero values set to one
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template<typename T1>
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arma_warn_unused
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inline
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SpMat<typename T1::elem_type>
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spones(const SpBase<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::elem_type eT;
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const unwrap_spmat<T1> U(X.get_ref());
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SpMat<eT> out(arma_layout_indicator(), U.M);
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arrayops::inplace_set( access::rwp(out.values), eT(1), out.n_nonzero );
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return out;
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}
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//! @}
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