Support computation experiments with different network data-structures.

src/aig/aig/aigDfs.c

@@ -753,6 +753,29 @@ int Aig_SupportSize( Aig_Man_t * p, Aig_Obj_t * pObj )
     return Counter;
 }
 
+/**Function*************************************************************
+
+  Synopsis    [Counts the support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Aig_SupportSizeTest( Aig_Man_t * p )
+{
+    Aig_Obj_t * pObj;
+    int i, Counter = 0, clk = clock();
+    Aig_ManForEachObj( p, pObj, i )
+        if ( Aig_ObjIsNode(pObj) )
+            Counter += (Aig_SupportSize(p, pObj) <= 16);
+    printf( "Nodes with small support %d (out of %d)\n", Counter, Aig_ManNodeNum(p) );
+    Abc_PrintTime( 1, "Time", clock() - clk );
+    return Counter;
+}
+
 /**Function*************************************************************
 
   Synopsis    [Counts the support size of the node.]

src/aig/gia/giaDfs.c

@@ -244,6 +244,46 @@ int Gia_ManSuppSize_rec( Gia_Man_t * p, Gia_Obj_t * pObj )
         Gia_ManSuppSize_rec( p, Gia_ObjFanin1(pObj) );
 }
 
+/**Function*************************************************************
+
+  Synopsis    [Computes support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Gia_ManSuppSizeOne( Gia_Man_t * p, Gia_Obj_t * pObj )
+{
+    Gia_ManIncrementTravId( p );
+    return Gia_ManSuppSize_rec( p, pObj );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Computes support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Gia_ManSuppSizeTest( Gia_Man_t * p )
+{
+    Gia_Obj_t * pObj;
+    int i, Counter = 0, clk = clock();
+    Gia_ManForEachObj( p, pObj, i )
+        if ( Gia_ObjIsAnd(pObj) )
+            Counter += (Gia_ManSuppSizeOne(p, pObj) <= 16);
+    printf( "Nodes with small support %d (out of %d)\n", Counter, Gia_ManAndNum(p) );
+    Abc_PrintTime( 1, "Time", clock() - clk );
+    return Counter;
+}
+
 /**Function*************************************************************
 
   Synopsis    [Collects support nodes.]

src/base/abc/abcDfs.c

@@ -780,6 +780,70 @@ Vec_Ptr_t * Abc_NtkNodeSupport( Abc_Ntk_t * pNtk, Abc_Obj_t ** ppNodes, int nNod
     return vNodes;
 }
 
+/**Function*************************************************************
+
+  Synopsis    [Computes support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Abc_ObjSuppSize_rec( Abc_Obj_t * pObj )
+{
+    Abc_Obj_t * pFanin;
+    int i, Counter = 0;
+    if ( Abc_NodeIsTravIdCurrent(pObj) )
+        return 0;
+    Abc_NodeSetTravIdCurrent(pObj);
+    if ( Abc_ObjIsPi(pObj) )
+        return 1;
+    assert( Abc_ObjIsNode(pObj) || Abc_ObjIsBox(pObj) );
+    Abc_ObjForEachFanin( pObj, pFanin, i )
+        Counter += Abc_ObjSuppSize_rec( pFanin );
+    return Counter;
+}
+/**Function*************************************************************
+
+  Synopsis    [Computes support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Abc_ObjSuppSize( Abc_Obj_t * pObj )
+{
+    Abc_NtkIncrementTravId( Abc_ObjNtk(pObj) );
+    return Abc_ObjSuppSize_rec( pObj );
+}
+/**Function*************************************************************
+
+  Synopsis    [Computes support size of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Abc_NtkSuppSizeTest( Abc_Ntk_t * p )
+{
+    Abc_Obj_t * pObj;
+    int i, Counter = 0, clk = clock();
+    Abc_NtkForEachObj( p, pObj, i )
+        if ( Abc_ObjIsNode(pObj) )
+            Counter += (Abc_ObjSuppSize(pObj) <= 16);
+    printf( "Nodes with small support %d (out of %d)\n", Counter, Abc_NtkNodeNum(p) );
+    Abc_PrintTime( 1, "Time", clock() - clk );
+    return Counter;
+}
+
 /**Function*************************************************************
 
   Synopsis    [Computes the sum total of supports of all outputs.]