---

gnn_affine.h

Go to the documentation of this file.

/***************************************************************************
 *  @file gnn_affine.h
 *  @brief gnn_affine Header File.
 *
 *  @date   : 05-10-03 11:56
 *  @author : Pedro Ortega C. <peortega@dcc.uchile.cl>
 *  Copyright  2003  Pedro Ortega C.
 ****************************************************************************/
/*
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _GNN_AFFINE_H_
#define _GNN_AFFINE_H_

/******************************************/
/* Include Files                          */
/******************************************/

#include "gnn_node.h"



/******************************************/
/* Typedefs                               */
/******************************************/

/**
 * @brief The structure for a \ref gnn_affine node.
 * @ingroup gnn_affine_doc
 *
 * This datatype holds the information for a \ref gnn_affine node.
 * Basically, it extends the \ref gnn_node with special pointers to get fast
 * accesses to the amplitudes and variances.
 */
typedef struct _gnn_affine gnn_affine;

struct _gnn_affine
{
    gnn_node node;                   /**< Subyacent \ref gnn_node.       */

    gsl_vector_view a_view;          /**< View to the amplitudes.             */
    gsl_vector_view da_view;         /**< View to teh amplitude gradients.    */
    gsl_vector_int_view af_view;     /**< View to the amplitude freeze flags. */

    gsl_vector *buf;                 /**< Buffer for fast evaluations.        */

    gsl_vector_view b_view;          /**< View to the variances.              */
    gsl_vector_view db_view;         /**< View to the variance gradients.     */
    gsl_vector_int_view bf_view;     /**< View to the variance freeze flags.  */

    gsl_vector     *a;       /**< Pointer to the amplitude vector.       */
    gsl_vector     *da;      /**< Pointer to the amplitude gradients.    */
    gsl_vector_int *af;      /**< Pointer to the amplitude freeze flags. */
    gsl_vector     *b;       /**< Pointer to the variance vector.        */
    gsl_vector     *db;      /**< Pointer to the variance gradients.     */
    gsl_vector_int *bf;      /**< Pointer to the variance freeze flags.  */
};



/******************************************/
/* Public Interface                       */
/******************************************/

gnn_node *
gnn_affine_new (int input_size, double a, double b);

gnn_node *
gnn_affine_standard_new (int input_size);

#endif /* _GNN_AFFINE_H_ */

---