bicgstab(5)

NAME

bicgstab - bi-conjugate gradient stabilized method

SYNOPSIS

int bicgstab (const Matrix &A, Vector &x, const Vector &b,
               const Preconditioner &M, int &max_iter, Real &tol);

EXAMPLE

The simplest call to 'bicgstab' has the folling form:

int status = bicgstab(a, x, b, EYE, 100, 1e-7);

DESCRIPTION

bicgstab solves the unsymmetric linear system Ax = b
using the preconditioned bi-conjugate gradient stabilized method

The return value indicates convergence within max_iter (input)
iterations (0), or no convergence within max_iter iterations (1).
Upon successful return, output arguments have the following values:

x approximate solution to Ax = b

max_iter

the number of iterations performed before the tolerance was reached

tol the residual after the final iteration

NOTE:

rheolef-5.89 bicgstab(5)