RTOp_ROp_get_ele.c

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00001 /*
00002 // @HEADER
00003 // ***********************************************************************
00004 // 
00005 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00006 //                  Copyright (2003) Sandia Corporation
00007 // 
00008 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00009 // license for use of this work by or on behalf of the U.S. Government.
00010 // 
00011 // This library is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Lesser General Public License as
00013 // published by the Free Software Foundation; either version 2.1 of the
00014 // License, or (at your option) any later version.
00015 //  
00016 // This library is distributed in the hope that it will be useful, but
00017 // WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019 // Lesser General Public License for more details.
00020 //  
00021 // You should have received a copy of the GNU Lesser General Public
00022 // License along with this library; if not, write to the Free Software
00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00024 // USA
00025 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00026 // 
00027 // ***********************************************************************
00028 // @HEADER
00029 */
00030 
00031 #include "RTOp_ROp_get_ele.h"
00032 #include "RTOp_obj_index_vtbl.h"
00033 #include "RTOp_obj_value_vtbl.h"
00034 #include "RTOp_reduct_sum_value.h"
00035 
00036 /* Implementation functions */
00037 
00038 static int RTOp_ROp_get_ele_apply_op(
00039   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00040   , const int num_vecs, const struct RTOp_SubVector vecs[]
00041   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00042   , RTOp_ReductTarget targ_obj )
00043 {
00044   RTOp_index_type        i;
00045   RTOp_index_type        global_offset;
00046   RTOp_index_type        sub_dim;
00047   const RTOp_value_type  *v0_val;
00048   ptrdiff_t              v0_val_s;
00049 
00050   /* */
00051   /* Validate the input */
00052   /* */
00053   if( num_vecs != 1 )
00054     return RTOp_ERR_INVALID_NUM_VECS;
00055   if( num_targ_vecs != 0 )
00056     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00057   assert(targ_obj);
00058   assert(vecs);
00059 
00060   /* */
00061   /* Get pointers to data */
00062   /* */
00063 
00064   /* i */
00065   i = *((RTOp_index_type*)obj_data);
00066 
00067   /* v0 */
00068   global_offset  = vecs[0].global_offset;
00069   sub_dim        = vecs[0].sub_dim;
00070   v0_val         = vecs[0].values;
00071   v0_val_s       = vecs[0].values_stride;
00072 
00073   /* */
00074   /* Lookup the element! */
00075   /* */
00076 
00077   if( i < global_offset + 1 || global_offset + sub_dim < i )
00078     return 0; /* The element we are looking for is not here. */
00079 
00080   *((RTOp_value_type*)targ_obj) = *(v0_val+v0_val_s*(i-global_offset-1));
00081 
00082   return 0; /* success? */
00083 }
00084 
00085 /* Virtual function table */
00086 const struct RTOp_RTOp_vtbl_t RTOp_ROp_get_ele_vtbl =
00087 {
00088   &RTOp_obj_index_vtbl  /* use simple scalar index type for object instance data */
00089   ,&RTOp_obj_value_vtbl /* use simple scalar value type for target object */
00090   ,"ROp_get_ele"
00091   ,NULL
00092   ,RTOp_ROp_get_ele_apply_op
00093   ,RTOp_reduct_sum_value
00094   ,RTOp_get_reduct_sum_value_op
00095 };
00096 
00097 /* Class specific functions */
00098 
00099 int RTOp_ROp_get_ele_construct( RTOp_index_type i, struct RTOp_RTOp* op )
00100 {
00101   op->vtbl = &RTOp_ROp_get_ele_vtbl;
00102   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00103   *((RTOp_index_type*)op->obj_data) = i;
00104   return 0;
00105 }
00106 
00107 int RTOp_ROp_get_ele_set_i( RTOp_index_type i, struct RTOp_RTOp* op )
00108 {
00109   *((RTOp_index_type*)op->obj_data) = i;
00110   return 0;
00111 }
00112 
00113 int RTOp_ROp_get_ele_destroy( struct RTOp_RTOp* op )
00114 {
00115   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00116   op->vtbl     = NULL;
00117   return 0;
00118 }
00119 
00120 RTOp_value_type RTOp_ROp_get_ele_val(RTOp_ReductTarget targ_obj)
00121 {
00122   return *((RTOp_value_type*)targ_obj);
00123 }

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