gmm_precond.h

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/* -*- c++ -*- (enables emacs c++ mode) */
/*===========================================================================
 
 Copyright (C) 2004-2026 Yves Renard
 
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===========================================================================*/
#ifndef GMM_PRECOND_H
#define GMM_PRECOND_H
 
#include "gmm_kernel.h"
 
/** @file gmm_precond.h
    @author  Yves Renard <[email protected]>
    @date March 29, 2004.
    @brief gmm preconditioners.
 */
 
/* Preconditioner concept :                                                */
/*                                                                         */
/* A the matrix, P the preconditioner PA well conditioned.                 */
/* PRECOND preconditioner type.                                            */
/* mult(P, v, w) :  w <- P v                                               */
/* transposed_mult(P, v, w)       : w <- transposed(P) v                   */
/* left_mult(P, v, w)             : see qmr solver                         */
/* right_mult(P, v, w)            : see qmr solver                         */
/* transposed_left_mult(P, v, w)  : see qmr solver                         */
/* transposed_right_mult(P, v, w) : see qmr solver                         */
/*                                                                         */
/* PRECOND P() : empty preconditioner.                                     */
/* PRECOND P(A, ...) : preconditioner for the matrix A, with optional      */
/*                     parameters                                          */
/* PRECOND(...)  : empty precondtioner with parameters set.                */
/* P.build_with(A) : build a precondtioner for A.                          */
/*                                                                         */
/* *********************************************************************** */
 
 
 
 
#endif