RTOp_TOp_set_ele.c

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

/* Implementation functions for RTOp_RTOp */

static int RTOp_TOp_set_ele_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 )
{
  const struct RTOp_value_index_type  *val_ind  = NULL;
  RTOp_value_type                     alpha;
  RTOp_value_type                     i;
  RTOp_index_type  global_offset;
  RTOp_index_type  z_sub_dim;
  RTOp_value_type  *z_val = NULL;
  ptrdiff_t        z_val_s;

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

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

  /* alpha, i */
  val_ind  = (const struct RTOp_value_index_type*)obj_data;
  alpha    = val_ind->value;
  i        = val_ind->index;

  /* z */
  global_offset = targ_vecs[0].global_offset;
  z_sub_dim     = targ_vecs[0].sub_dim;
  z_val         = targ_vecs[0].values;
  z_val_s       = targ_vecs[0].values_stride;

  /* */
  /* Set the element? */
  /* */

  if( i < global_offset + 1 || global_offset + z_sub_dim < i )
    return 0; /* The element we are looking for is not here. */

  /* It is not hard to find the element */
  z_val[(ptrdiff_t)(z_val_s * (i-global_offset-1))] = alpha;

  return 0; /* success? */
}

/* Virtual function table */
const struct RTOp_RTOp_vtbl_t RTOp_TOp_set_ele_vtbl =
{
  &RTOp_obj_value_index_vtbl
  ,&RTOp_obj_null_vtbl /* use null type for reduction target object */
  ,"TOp_set_ele"
  ,NULL /* use default from reduct_vtbl */
  ,RTOp_TOp_set_ele_apply_op
  ,NULL
  ,NULL
};


/* Class specific functions */

int RTOp_TOp_set_ele_construct( RTOp_index_type i, RTOp_value_type alpha
  , struct RTOp_RTOp* op )
{
  struct RTOp_value_index_type *val_ind = NULL;
  op->vtbl = &RTOp_TOp_set_ele_vtbl;
  op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
  val_ind = (struct RTOp_value_index_type*)op->obj_data;
  val_ind->value  = alpha;
  val_ind->index  = i;
  return 0; /* success? */
}

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

int RTOp_TOp_set_ele_set_i_alpha( RTOp_index_type i, RTOp_value_type alpha
  , struct RTOp_RTOp* op )
{
  struct RTOp_value_index_type
    *val_ind = (struct RTOp_value_index_type*)op->obj_data;
  val_ind->value  = alpha;
  val_ind->index  = i;
  return 0; /* success? */
}