Description of bicg

bicg		Programmers Guide
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Category:itl,algorithms

Component type:function

Prototype

template <class Matrix, class Vector, class VectorB, class Preconditioner, class Iteration> int bicg(const Matrix& A, Vector& x, const VectorB& b, const Preconditioner& M, Iteration& iter) ;

Description

This solves the unsymmetric linear system Ax = b using the Preconditioned BiConjugate Gradient method.

A return value of 0 indicates convergence within the maximum number of iterations (determined by the iter object). A return value of 1 indicates a failure to converge.

See: R. Fletcher, Conjugate gradient methods for indefinite systems, In Numerical Analysis Dundee 1975, G. Watson, ed., Springer Verlag, Berlin, New York, 1976 pp. 73-89

Definition

bicg.h

Preconditions

Complexity

Example

Notes

See also