Classes
class	Grid
	Static functions for constructing `A` and `b`, the components of a linear system `Au = b`. More...

class	InterpolatorBase
	Base class for interpolators that implement prolongation and restriction as linear operators constructed by the `make_operators` virtual function. More...

class	Jacobi
	Dense Jacobi iterative method. More...

class	LinearInterpolator
	Interface for linear interpolation. More...

class	Multigrid
	Interface for multigrid solver (via `solve`) that iteratively performs standard `vcycle`s. More...

class	SmootherBase
	Base class for smoothers that must implement a `smooth` function for the iterative solution of a linear system `Au = b`. More...

class	SparseGaussSeidel
	Symmetric Gauss-Seidel smoother for sparse systems. More...

class	SuccessiveOverRelaxation
	Dense successive over relaxation iterative method. More...

Functions
template<class EleType >
EleType	rss (const Eigen::SparseMatrix< EleType > &A, const Eigen::Matrix< EleType, -1, 1 > &u, const Eigen::Matrix< EleType, -1, 1 > &b)
	Return residual sum of squares of `bhat` from `Au` and rhs `b`.

Function Documentation

◆ rss()

template<class EleType >

EleType AMG::rss	(	const Eigen::SparseMatrix< EleType > &	A,
		const Eigen::Matrix< EleType, -1, 1 > &	u,
		const Eigen::Matrix< EleType, -1, 1 > &	b )

Return residual sum of squares of bhat from Au and rhs b.

Template Parameters

EleType

Parameters

A	Coefficients matrix for discretized governing equations.
u	Solution to linear system of equations.
b	Right hand side of linear system `Au = b`.