37 lines
995 B
C
37 lines
995 B
C
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2015 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_NULL_H
|
||
|
|
#define IGL_NULL_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
|
||
|
|
#include <Eigen/Dense>
|
||
|
|
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// Like MATLAB's null
|
||
|
|
//
|
||
|
|
// Compute a basis for the null space for the given matrix A: the columns of
|
||
|
|
// the output N form a basis for the space orthogonal to that spanned by the
|
||
|
|
// rows of A.
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// A m by n matrix
|
||
|
|
// Outputs:
|
||
|
|
// N n by r matrix, where r is the row rank of A
|
||
|
|
template <typename DerivedA, typename DerivedN>
|
||
|
|
IGL_INLINE void null(
|
||
|
|
const Eigen::PlainObjectBase<DerivedA> & A,
|
||
|
|
Eigen::PlainObjectBase<DerivedN> & N);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "null.cpp"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|