Provided by: librheolef-dev_5.93-2_i386 bug

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: