RTOp_ROp_sum.c

/*
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// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
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#include "RTOp_ROp_sum.h"
#include "RTOp_obj_null_vtbl.h"
#include "RTOp_obj_value_vtbl.h"
#include "RTOp_reduct_sum_value.h"

/* Implementation functions */

static int RTOp_ROp_sum_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 targ_obj )
{
  RTOp_index_type        v0_sub_dim;
  const RTOp_value_type  *v0_val;
  ptrdiff_t              v0_val_s;
  register RTOp_index_type k;
  RTOp_value_type sum = 0.0;

  /* */
  /* Validate the input */
  /* */
  if( num_vecs != 1 )
    return RTOp_ERR_INVALID_NUM_VECS;
  if( num_targ_vecs != 0 )
    return RTOp_ERR_INVALID_NUM_TARG_VECS;

  /* */
  /* Get pointers to data */
  /* */

  /* v0 */
  v0_sub_dim      = vecs[0].sub_dim;
  v0_val         = vecs[0].values;
  v0_val_s       = vecs[0].values_stride;

  /* */
  /* Sum the vector elements! */
  /* */

  for( k = 0; k < v0_sub_dim; ++k, v0_val += v0_val_s )
    sum += *v0_val;

  /* */
  /* Add this to the result */
  /* */
  *((RTOp_value_type*)targ_obj) += sum;

  return 0; /* success? */
}

/* Virtual function table */
const struct RTOp_RTOp_vtbl_t RTOp_ROp_sum_vtbl =
{
  &RTOp_obj_null_vtbl   /* use null type for instance data */
  ,&RTOp_obj_value_vtbl /* use simple scalar type for target object */
  ,"ROp_sum"
  ,NULL
  ,RTOp_ROp_sum_apply_op
  ,RTOp_reduct_sum_value
  ,RTOp_get_reduct_sum_value_op
};

/* Class specific functions */

int RTOp_ROp_sum_construct( struct RTOp_RTOp* op )
{
  op->obj_data = NULL;
  op->vtbl     = &RTOp_ROp_sum_vtbl;
  return 0;
}

int RTOp_ROp_sum_destroy( struct RTOp_RTOp* op )
{
  op->obj_data = NULL;
  op->vtbl     = NULL;
  return 0;
}

RTOp_value_type RTOp_ROp_sum_val(RTOp_ReductTarget targ_obj)
{
  return *((RTOp_value_type*)targ_obj);
}