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RTOp_ROp_find_nan_inf.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_find_nan_inf.h"
00045 #include "RTOp_obj_null_vtbl.h"
00046 #include "RTOp_obj_value_index_vtbl.h"
00047 #include "check_nan_inf.h"
00048 #include "RTOp_get_reduct_op.hpp"
00049 
00050 /* Implementation functions */
00051 
00052 static int RTOp_ROp_find_nan_inf_apply_op(
00053   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data
00054   , const int num_vecs, const struct RTOp_SubVector vecs[]
00055   , const int num_targ_vecs, const struct RTOp_MutableSubVector targ_vecs[]
00056   , RTOp_ReductTarget targ_obj )
00057 {
00058   struct RTOp_value_index_type
00059                          *targ;
00060   RTOp_index_type        global_offset;
00061   RTOp_index_type        sub_dim;
00062   const RTOp_value_type  *v0_val;
00063   ptrdiff_t              v0_val_s;
00064   RTOp_index_type        i;
00065 
00066   /* */
00067   /* Validate the input */
00068   /* */
00069   if( num_vecs != 1 )
00070     return RTOp_ERR_INVALID_NUM_VECS;
00071   if( num_targ_vecs != 0 )
00072     return RTOp_ERR_INVALID_NUM_TARG_VECS;
00073   assert(targ_obj);
00074   assert(vecs);
00075 
00076   /* */
00077   /* Get pointers to data */
00078   /* */
00079 
00080   /* {value,index} */
00081   targ = (struct RTOp_value_index_type*)targ_obj;
00082 
00083   /* v0 */
00084   global_offset  = vecs[0].global_offset;
00085   sub_dim        = vecs[0].sub_dim;
00086   v0_val         = vecs[0].values;
00087   v0_val_s       = vecs[0].values_stride;
00088 
00089   /* */
00090   /* Find a NaN or Inf element! */
00091   /* */
00092 
00093   for( i = global_offset + 1; i <= global_offset + sub_dim; ++i, v0_val += v0_val_s ) {
00094     if( RTOp_is_nan_inf(*v0_val) && ( targ->index == 0 || i < targ->index ) ) {
00095       targ->value = *v0_val;
00096       targ->index = i;
00097       break;
00098     }
00099   }
00100 
00101   return 0; /* success? */
00102 }
00103 
00104 static int reduce_reduct_objs(
00105   const struct RTOp_RTOp_vtbl_t* vtbl, const void* obj_data /* Can be NULL! */
00106   , RTOp_ReductTarget in_reduct_obj, RTOp_ReductTarget inout_reduct_obj )
00107 {
00108   const struct RTOp_value_index_type
00109     *i_targ = (const struct RTOp_value_index_type*)in_reduct_obj;
00110   struct RTOp_value_index_type
00111     *io_targ = (struct RTOp_value_index_type*)inout_reduct_obj;
00112   if(  io_targ->index == 0 || ( i_targ->index != 0 && i_targ->index < io_targ->index ) ) {
00113     io_targ->index = i_targ->index;
00114     io_targ->value = i_targ->value;
00115   }
00116   return 0;
00117 }
00118 
00119 INSERT_GET_REDUCT_OP_FUNCS(
00120   1,1,0,RTOp_value_index_type,reduce_reduct_objs
00121   ,RTOp_obj_value_index_vtbl.load_state
00122   ,RTOp_obj_value_index_vtbl.extract_state
00123   ,external_reduct_op,get_reduct_op)
00124 
00125 /* Virtual function table */
00126 const struct RTOp_RTOp_vtbl_t RTOp_ROp_find_nan_inf_vtbl =
00127 {
00128   &RTOp_obj_null_vtbl         /* use null type for instance data */
00129   ,&RTOp_obj_value_index_vtbl /* use {value,index} type for target object */
00130   ,"ROp_find_nan_inf"
00131   ,NULL
00132   ,RTOp_ROp_find_nan_inf_apply_op
00133   ,reduce_reduct_objs
00134   ,get_reduct_op
00135 };
00136 
00137 /* Class specific functions */
00138 
00139 int RTOp_ROp_find_nan_inf_construct( struct RTOp_RTOp* op )
00140 {
00141   op->obj_data = NULL;
00142   op->vtbl     = &RTOp_ROp_find_nan_inf_vtbl;
00143   return 0;
00144 }
00145 
00146 int RTOp_ROp_find_nan_inf_destroy( struct RTOp_RTOp* op )
00147 {
00148   op->obj_data = NULL;
00149   op->vtbl     = NULL;
00150   return 0;
00151 }
00152 
00153 struct RTOp_ROp_find_nan_inf_reduct_obj_t
00154 RTOp_ROp_find_nan_inf_val(RTOp_ReductTarget targ_obj)
00155 {
00156   const struct RTOp_value_index_type                *value_index;
00157   struct RTOp_ROp_find_nan_inf_reduct_obj_t         return_obj;
00158 #ifdef RTOp_DEBUG
00159   assert(targ_obj != RTOp_REDUCT_OBJ_NULL);
00160 #endif
00161   value_index = (const struct RTOp_value_index_type*)targ_obj;
00162   return_obj.v0_i = value_index->value;
00163   return_obj.i    = value_index->index;
00164   return return_obj;
00165 }
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