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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
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00042 */
00043 
00044 #include "RTOp_ROp_get_ele.h"
00045 #include "RTOp_obj_index_vtbl.h"
00046 #include "RTOp_obj_value_vtbl.h"
00047 #include "RTOp_reduct_sum_value.h"
00048 
00049 /* Implementation functions */
00050 
00051 static int RTOp_ROp_get_ele_apply_op(
00052   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00053   , const int num_vecs, const struct RTOp_SubVector vecs[]
00054   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00055   , RTOp_ReductTarget targ_obj )
00056 {
00057   RTOp_index_type        i;
00058   RTOp_index_type        global_offset;
00059   RTOp_index_type        sub_dim;
00060   const RTOp_value_type  *v0_val;
00061   ptrdiff_t              v0_val_s;
00062 
00063   /* */
00064   /* Validate the input */
00065   /* */
00066   if( num_vecs != 1 )
00067     return RTOp_ERR_INVALID_NUM_VECS;
00068   if( num_targ_vecs != 0 )
00069     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00070   assert(targ_obj);
00071   assert(vecs);
00072 
00073   /* */
00074   /* Get pointers to data */
00075   /* */
00076 
00077   /* i */
00078   i = *((RTOp_index_type*)obj_data);
00079 
00080   /* v0 */
00081   global_offset  = vecs[0].global_offset;
00082   sub_dim        = vecs[0].sub_dim;
00083   v0_val         = vecs[0].values;
00084   v0_val_s       = vecs[0].values_stride;
00085 
00086   /* */
00087   /* Lookup the element! */
00088   /* */
00089 
00090   if( i < global_offset + 1 || global_offset + sub_dim < i )
00091     return 0; /* The element we are looking for is not here. */
00092 
00093   *((RTOp_value_type*)targ_obj) = *(v0_val+v0_val_s*(i-global_offset-1));
00094 
00095   return 0; /* success? */
00096 }
00097 
00098 /* Virtual function table */
00099 const struct RTOp_RTOp_vtbl_t RTOp_ROp_get_ele_vtbl =
00100 {
00101   &RTOp_obj_index_vtbl  /* use simple scalar index type for object instance data */
00102   ,&RTOp_obj_value_vtbl /* use simple scalar value type for target object */
00103   ,"ROp_get_ele"
00104   ,NULL
00105   ,RTOp_ROp_get_ele_apply_op
00106   ,RTOp_reduct_sum_value
00107   ,RTOp_get_reduct_sum_value_op
00108 };
00109 
00110 /* Class specific functions */
00111 
00112 int RTOp_ROp_get_ele_construct( RTOp_index_type i, struct RTOp_RTOp* op )
00113 {
00114   op->vtbl = &RTOp_ROp_get_ele_vtbl;
00115   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00116   *((RTOp_index_type*)op->obj_data) = i;
00117   return 0;
00118 }
00119 
00120 int RTOp_ROp_get_ele_set_i( RTOp_index_type i, struct RTOp_RTOp* op )
00121 {
00122   *((RTOp_index_type*)op->obj_data) = i;
00123   return 0;
00124 }
00125 
00126 int RTOp_ROp_get_ele_destroy( struct RTOp_RTOp* op )
00127 {
00128   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00129   op->vtbl     = NULL;
00130   return 0;
00131 }
00132 
00133 RTOp_value_type RTOp_ROp_get_ele_val(RTOp_ReductTarget targ_obj)
00134 {
00135   return *((RTOp_value_type*)targ_obj);
00136 }
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