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RTOp_TOp_assign_vectors.c
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00001 /*
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00004 // 
00005 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00006 //                  Copyright (2003) Sandia Corporation
00007 // 
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00042 */
00043 
00044 #include "RTOp_TOp_assign_vectors.h"
00045 #include "RTOp_obj_null_vtbl.h"
00046 
00047 /* Implementation functions for RTOp_RTOp */
00048 
00049 static int RTOp_TOp_assign_vectors_apply_op(
00050   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00051   , const int num_vecs, const struct RTOp_SubVector vecs[]
00052   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00053   , RTOp_ReductTarget targ_obj )
00054 {
00055   RTOp_index_type        z_sub_dim;
00056   RTOp_value_type        *z_val = NULL;
00057   ptrdiff_t              z_val_s;
00058   RTOp_index_type        v0_sub_dim;
00059   const RTOp_value_type  *v0_val;
00060   ptrdiff_t              v0_val_s;
00061 
00062   register RTOp_index_type k;
00063   RTOp_value_type *z_val_tmp = NULL;
00064 #ifdef RTOp_DEBUG
00065   RTOp_index_type i;
00066 #endif
00067 
00068   /* */
00069   /* Validate the input */
00070   /* */
00071   if( num_vecs != 1 || vecs == NULL )
00072     return RTOp_ERR_INVALID_NUM_VECS;
00073   if( num_targ_vecs != 1 || targ_vecs == NULL )
00074     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00075   if( targ_vecs[0].sub_dim != vecs[0].sub_dim )
00076     return RTOp_ERR_INCOMPATIBLE_VECS;
00077 
00078   /* */
00079   /* Get pointers to data */
00080   /* */
00081 
00082   /* z */
00083   z_sub_dim     = targ_vecs[0].sub_dim;
00084   z_val         = targ_vecs[0].values;
00085   z_val_s       = targ_vecs[0].values_stride;
00086 
00087   /* v0 */
00088   v0_sub_dim     = vecs[0].sub_dim;
00089   v0_val         = vecs[0].values;
00090   v0_val_s       = vecs[0].values_stride;
00091 
00092   z_val_tmp = z_val;
00093 
00094   /* */
00095   /* Assign the elements */
00096   /* */
00097 
00098   if( z_val_s == 1 && v0_val_s == 1 ) {
00099     /* Slightly faster loop for unit stride vectors */
00100     for( k = 0; k < z_sub_dim; ++k )
00101       *z_val++ = *v0_val++;
00102   }
00103   else {
00104     /* More general implementation for one or both non-unit strides */
00105     for( k = 0; k < z_sub_dim; ++k, z_val += z_val_s, v0_val += v0_val_s )
00106       *z_val = *v0_val;
00107   }
00108 
00109   return 0; /* success? */
00110 }
00111 
00112 /* Virtual function table */
00113 const struct RTOp_RTOp_vtbl_t RTOp_TOp_assign_vectors_vtbl =
00114 {
00115   &RTOp_obj_null_vtbl  /* Use a null object for instance data */
00116   ,&RTOp_obj_null_vtbl /* use null type for target object */
00117   ,"TOp_assign_vectors"
00118   ,NULL /* use default from reduct_vtbl */
00119   ,RTOp_TOp_assign_vectors_apply_op
00120   ,NULL
00121   ,NULL
00122 };
00123 
00124 /* Class specific functions */
00125 
00126 int RTOp_TOp_assign_vectors_construct( struct RTOp_RTOp* op )
00127 {
00128   op->obj_data  = NULL;
00129   op->vtbl      = &RTOp_TOp_assign_vectors_vtbl;
00130   return 0; /* success? */
00131 }
00132 
00133 int RTOp_TOp_assign_vectors_destroy( struct RTOp_RTOp* op )
00134 {
00135   op->obj_data  = NULL;
00136   op->vtbl      = NULL;
00137   return 0; /* success? */
00138 }
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