27 lines
812 B
C
27 lines
812 B
C
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2016 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_ISDIAG_H
|
||
|
|
#define IGL_ISDIAG_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
#include <Eigen/Sparse>
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// Determine if a given matrix is diagonal: all non-zeros lie on the
|
||
|
|
// main diagonal.
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// A m by n sparse matrix
|
||
|
|
// Returns true iff and only if the matrix is diagonal.
|
||
|
|
template <typename Scalar>
|
||
|
|
IGL_INLINE bool isdiag(const Eigen::SparseMatrix<Scalar> & A);
|
||
|
|
};
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "isdiag.cpp"
|
||
|
|
#endif
|
||
|
|
#endif
|