RTOp_TOp_assign_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_assign_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_assign_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   /* */
00044   /* Get pointers to data */
00045   /* */
00046 
00047   /* alpha */
00048   const RTOp_value_type alpha = *((RTOp_value_type*)obj_data);
00049 
00050   /* z */
00051   RTOp_index_type        z_sub_dim     = targ_vecs[0].sub_dim;
00052   RTOp_value_type        *z_val        = targ_vecs[0].values;
00053   ptrdiff_t              z_val_s       = targ_vecs[0].values_stride;
00054 
00055   register RTOp_index_type k;
00056 
00057   /* */
00058   /* Validate the input */
00059   /* */
00060 
00061   if( num_vecs != 0 || vecs != NULL )
00062     return RTOp_ERR_INVALID_NUM_VECS;
00063   if( num_targ_vecs != 1 || targ_vecs == NULL )
00064     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00065 
00066   /* */
00067   /* Assign the elements */
00068   /* */
00069 
00070   for( k = 0; k < z_sub_dim; ++k, z_val += z_val_s )
00071     *z_val = alpha;
00072 
00073   return 0; /* success? */
00074 }
00075 
00076 /* Virtual function table */
00077 const struct RTOp_RTOp_vtbl_t RTOp_TOp_assign_scalar_vtbl =
00078 {
00079   &RTOp_obj_value_vtbl /* use simple scalar value type for object instance data */
00080   ,&RTOp_obj_null_vtbl /* use null type for target object */
00081   ,"TOp_assign_scalar"
00082   ,NULL /* use default from reduct_vtbl */
00083   ,RTOp_TOp_assign_scalar_apply_op
00084   ,NULL
00085   ,NULL
00086 };
00087 
00088 /* Class specific functions */
00089 
00090 int RTOp_TOp_assign_scalar_construct( RTOp_value_type alpha, struct RTOp_RTOp* op )
00091 {
00092   op->vtbl = &RTOp_TOp_assign_scalar_vtbl;
00093   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00094   *((RTOp_value_type*)op->obj_data) = alpha;
00095   return 0; /* success? */
00096 }
00097 
00098 int RTOp_TOp_assign_scalar_destroy( struct RTOp_RTOp* op )
00099 {
00100   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00101   op->vtbl = NULL;
00102   return 0; /* success? */
00103 }
00104 
00105 int RTOp_TOp_assign_scalar_set_alpha( RTOp_value_type alpha, struct RTOp_RTOp* op )
00106 {
00107   *((RTOp_value_type*)op->obj_data) = alpha;
00108   return 0; /* success? */
00109 }

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