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36 lines
1 KiB
C++
36 lines
1 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_INVERT_DIAG_H
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#define IGL_INVERT_DIAG_H
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#include "igl_inline.h"
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#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
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#include <Eigen/Sparse>
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namespace igl
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{
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// Invert the diagonal entries of a matrix (if the matrix is a diagonal
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// matrix then this amounts to inverting the matrix)
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// Templates:
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// T should be a eigen sparse matrix primitive type like int or double
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// Inputs:
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// X an m by n sparse matrix
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// Outputs:
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// Y an m by n sparse matrix
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template <typename T>
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IGL_INLINE void invert_diag(
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const Eigen::SparseMatrix<T>& X,
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Eigen::SparseMatrix<T>& Y);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "invert_diag.cpp"
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#endif
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#endif
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