RTOp_TOp_sign.c

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 /* ///////////////////////////////////////////// */
00032 /* RTOp_TOp_sign.c */
00033 
00034 #include "RTOp_TOp_sign.h"
00035 #include "RTOp_obj_null_vtbl.h"  /* vtbl for operator object instance data */
00036 
00037 /* Implementation functions for RTOp_RTOp */
00038 
00039 static int RTOp_TOp_sign_apply_op(
00040   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00041   , const int num_vecs, const struct RTOp_SubVector vecs[]
00042   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00043   , RTOp_ReductTarget reduct_obj )
00044 {
00045   /* */
00046   /* Declare local variables */
00047   /* */
00048 
00049   /* Vector data */
00050   RTOp_index_type           sub_dim;
00051   /* z0 */
00052   RTOp_value_type           *z0_val;
00053   ptrdiff_t                 z0_val_s;
00054   /* v0 */
00055   const RTOp_value_type     *v0_val;
00056   ptrdiff_t                 v0_val_s;
00057 
00058   /* Automatic temporary variables */
00059   register RTOp_index_type  k;
00060 
00061   /* */
00062   /* Validate the input */
00063   /* */
00064   if( num_vecs != 1 || ( num_vecs && vecs == NULL ) )
00065     return RTOp_ERR_INVALID_NUM_VECS;
00066   if( num_targ_vecs != 1 || ( num_targ_vecs && targ_vecs == NULL ) )
00067     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00068   if( /* Validate sub_dim */
00069     targ_vecs[0].sub_dim != vecs[0].sub_dim
00070     )
00071     return RTOp_ERR_INCOMPATIBLE_VECS;
00072 
00073 
00074   /* */
00075   /* Get pointers to data */
00076   /* */
00077   sub_dim       = vecs[0].sub_dim;
00078   /* z0 */
00079   z0_val        = targ_vecs[0].values;
00080   z0_val_s      = targ_vecs[0].values_stride;
00081   /* v0 */
00082   v0_val        = vecs[0].values;
00083   v0_val_s      = vecs[0].values_stride;
00084 
00085 
00086   /* */
00087   /* Apply the operator: */
00088   /* */
00089   for( k = 0; k < sub_dim; ++k, v0_val += v0_val_s, z0_val += z0_val_s )
00090   {
00091     /* Element-wise transformation */
00092     (*z0_val) = ( (*v0_val) == 0.0 ? 0.0 : ( (*v0_val) < 0.0 ? -1.0 : +1.0 ) );
00093   }
00094 
00095   return 0; /* success? */
00096 }
00097 
00098 /* Virtual function table */
00099 const struct RTOp_RTOp_vtbl_t RTOp_TOp_sign_vtbl =
00100 {
00101   &RTOp_obj_null_vtbl
00102   ,&RTOp_obj_null_vtbl
00103   ,"TOp_sign"
00104   ,NULL
00105   ,RTOp_TOp_sign_apply_op
00106   ,NULL
00107   ,NULL
00108 };
00109 
00110 /* Class specific functions */
00111 
00112 int RTOp_TOp_sign_construct(  struct RTOp_RTOp* op )
00113 {
00114 #ifdef RTOp_DEBUG
00115   assert(op);
00116 #endif
00117   op->obj_data  = NULL;
00118   op->vtbl      = &RTOp_TOp_sign_vtbl;
00119   op->vtbl->obj_data_vtbl->obj_create(NULL,NULL,&op->obj_data);
00120   return 0;
00121 }
00122 
00123 int RTOp_TOp_sign_destroy( struct RTOp_RTOp* op )
00124 {
00125   op->vtbl->obj_data_vtbl->obj_free(NULL,NULL,&op->obj_data);
00126   op->obj_data  = NULL;
00127   op->vtbl      = NULL;
00128   return 0;
00129 }
00130 
00131 
00132 

Generated on Tue Jul 13 09:28:39 2010 for RTOpPack: Extra C/C++ Code for Vector Reduction/Transformation Operators by  doxygen 1.4.7