/*
// @HEADER
// ***********************************************************************
// 
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
// 
// ***********************************************************************
// @HEADER
*/

#include <math.h>

/* ///////////////////////////////////////////// */
/* RTOp_ROp_sum_abs.c */

/* */
/* Note: This file was created automatically by 'new_rtop.pl' */
/*       on 8/12/2003 at 19:31 */
/* */

#define max(a,b) ( (a) > (b) ? (a) : (b) )
#define min(a,b) ( (a) < (b) ? (a) : (b) )

#include "RTOp_ROp_sum_abs.h"
#include "RTOp_obj_null_vtbl.h"     /* vtbl for operator object instance data */
#include "RTOp_reduct_sum_value.h"  /* Reduction of intermediate reduction objects */

/* Implementation functions for RTOp_RTOp */

static int RTOp_ROp_sum_abs_apply_op(
	const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
	, const int num_vecs, const struct RTOp_SubVector vecs[]
	, const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
	, RTOp_ReductTarget reduct_obj )
{
	/* */
	/* Declare local variables */
	/* */

	/* Access to the reduction object data */
	RTOp_value_type *abs_sum = (RTOp_value_type*)reduct_obj;
	/* Vector data */
	RTOp_index_type           sub_dim;
	/* v0 */
	const RTOp_value_type     *v0_val;
	ptrdiff_t                 v0_val_s;

	/* Automatic temporary variables */
	register RTOp_index_type  k;
	/* Temporary element-wise reduction object */
	RTOp_value_type abs_sum_ith;

	/* */
	/* Validate the input */
	/* */
	if( num_vecs != 1 || ( num_vecs && vecs == NULL ) )
		return RTOp_ERR_INVALID_NUM_VECS;
	if( num_targ_vecs != 0 || ( num_targ_vecs && targ_vecs == NULL ) )
		return RTOp_ERR_INVALID_NUM_TARG_VECS;
	assert(reduct_obj);

	/* */
	/* Get pointers to data */
	/* */
	sub_dim       = vecs[0].sub_dim;
	/* v0 */
	v0_val        = vecs[0].values;
	v0_val_s      = vecs[0].values_stride;

	/* */
	/* Apply the operator: */
	/* */
	for( k = 0; k < sub_dim; ++k, v0_val += v0_val_s )
	{
		/* Element-wise reduction */
		abs_sum_ith = fabs((*v0_val));
		/* Reduction of intermediates */
		(*abs_sum) += abs_sum_ith;
	}

	return 0; /* success? */
}

/* Virtual function table */
const struct RTOp_RTOp_vtbl_t RTOp_ROp_sum_abs_vtbl =
{
	&RTOp_obj_null_vtbl
	,&RTOp_obj_value_vtbl
	,"ROp_sum_abs"
	,NULL
	,RTOp_ROp_sum_abs_apply_op
	,RTOp_reduct_sum_value
	,RTOp_get_reduct_sum_value_op
};

/* Class specific functions */

int RTOp_ROp_sum_abs_construct(  struct RTOp_RTOp* op )
{
#ifdef RTOp_DEBUG
	assert(op);
#endif
	op->obj_data  = NULL;
	op->vtbl      = &RTOp_ROp_sum_abs_vtbl;
	op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
	return 0;
}

int RTOp_ROp_sum_abs_destroy( struct RTOp_RTOp* op )
{
	op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
	op->obj_data  = NULL;
	op->vtbl      = NULL;
	return 0;
}


RTOp_value_type RTOp_ROp_sum_abs_val(RTOp_ReductTarget reduct_obj)
{
	return *((RTOp_value_type*)reduct_obj);
}

