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