RTOp_TOp_add_scalar.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_TOp_add_scalar.h"
00032 #include "RTOp_obj_value_vtbl.h"
00033 #include "RTOp_obj_null_vtbl.h"
00034 
00035 /* Implementation functions for RTOp_RTOp */
00036 
00037 static int RTOp_TOp_add_scalar_apply_op(
00038   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00039   , const int num_vecs, const struct RTOp_SubVector vecs[]
00040   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00041   , RTOp_ReductTarget targ_obj )
00042 {
00043   RTOp_value_type        alpha = 0.0;
00044   RTOp_index_type        z_sub_dim;
00045   RTOp_value_type        *z_val;
00046   ptrdiff_t              z_val_s;
00047   register RTOp_index_type k;
00048 
00049   /* */
00050   /* Validate the input */
00051   /* */
00052 
00053   if( num_vecs != 0 || vecs != NULL )
00054     return RTOp_ERR_INVALID_NUM_VECS;
00055   if( num_targ_vecs != 1 || targ_vecs == NULL )
00056     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00057   assert(obj_data);
00058 
00059   /* */
00060   /* Get pointers to data */
00061   /* */
00062 
00063   /* alpha */
00064   alpha = *((RTOp_value_type*)obj_data);
00065 
00066   /* z */
00067   z_sub_dim     = targ_vecs[0].sub_dim;
00068   z_val         = targ_vecs[0].values;
00069   z_val_s       = targ_vecs[0].values_stride;
00070 
00071   /* */
00072   /* Scale the elements */
00073   /* */
00074 
00075   for( k = 0; k < z_sub_dim; ++k, z_val += z_val_s )
00076     *z_val += alpha;
00077 
00078   return 0; /* success? */
00079 }
00080 
00081 /* Virtual function table */
00082 const struct RTOp_RTOp_vtbl_t RTOp_TOp_add_scalar_vtbl =
00083 {
00084   &RTOp_obj_value_vtbl /* use simple scalar value type for object instance data */
00085   ,&RTOp_obj_null_vtbl /* use null type for target object */
00086   ,"TOp_add_scalar"
00087   ,NULL
00088   ,RTOp_TOp_add_scalar_apply_op
00089   ,NULL
00090   ,NULL
00091 };
00092 
00093 /* Class specific functions */
00094 
00095 int RTOp_TOp_add_scalar_construct( RTOp_value_type alpha, struct RTOp_RTOp* op )
00096 {
00097   op->vtbl = &RTOp_TOp_add_scalar_vtbl;
00098   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00099   *((RTOp_value_type*)op->obj_data) = alpha;
00100   return 0; /* success? */
00101 }
00102 
00103 int RTOp_TOp_add_scalar_destroy( struct RTOp_RTOp* op )
00104 {
00105   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00106   op->vtbl = NULL;
00107   return 0; /* success? */
00108 }
00109 
00110 int RTOp_TOp_add_scalar_set_alpha( RTOp_value_type alpha, struct RTOp_RTOp* op )
00111 {
00112   *((RTOp_value_type*)op->obj_data) = alpha;
00113   return 0; /* success? */
00114 }

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