RTOp_ROp_sum.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_sum.h"
00032 #include "RTOp_obj_null_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_sum_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        v0_sub_dim;
00045   const RTOp_value_type  *v0_val;
00046   ptrdiff_t              v0_val_s;
00047   register RTOp_index_type k;
00048   RTOp_value_type sum = 0.0;
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 
00058   /* */
00059   /* Get pointers to data */
00060   /* */
00061 
00062   /* v0 */
00063   v0_sub_dim      = vecs[0].sub_dim;
00064   v0_val         = vecs[0].values;
00065   v0_val_s       = vecs[0].values_stride;
00066 
00067   /* */
00068   /* Sum the vector elements! */
00069   /* */
00070 
00071   for( k = 0; k < v0_sub_dim; ++k, v0_val += v0_val_s )
00072     sum += *v0_val;
00073 
00074   /* */
00075   /* Add this to the result */
00076   /* */
00077   *((RTOp_value_type*)targ_obj) += sum;
00078 
00079   return 0; /* success? */
00080 }
00081 
00082 /* Virtual function table */
00083 const struct RTOp_RTOp_vtbl_t RTOp_ROp_sum_vtbl =
00084 {
00085   &RTOp_obj_null_vtbl   /* use null type for instance data */
00086   ,&RTOp_obj_value_vtbl /* use simple scalar type for target object */
00087   ,"ROp_sum"
00088   ,NULL
00089   ,RTOp_ROp_sum_apply_op
00090   ,RTOp_reduct_sum_value
00091   ,RTOp_get_reduct_sum_value_op
00092 };
00093 
00094 /* Class specific functions */
00095 
00096 int RTOp_ROp_sum_construct( struct RTOp_RTOp* op )
00097 {
00098   op->obj_data = NULL;
00099   op->vtbl     = &RTOp_ROp_sum_vtbl;
00100   return 0;
00101 }
00102 
00103 int RTOp_ROp_sum_destroy( struct RTOp_RTOp* op )
00104 {
00105   op->obj_data = NULL;
00106   op->vtbl     = NULL;
00107   return 0;
00108 }
00109 
00110 RTOp_value_type RTOp_ROp_sum_val(RTOp_ReductTarget targ_obj)
00111 {
00112   return *((RTOp_value_type*)targ_obj);
00113 }

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