1 files changed, 155 insertions, 0 deletions
diff --git a/src/base/abci/abcUnate.c b/src/base/abci/abcUnate.c
new file mode 100644
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+++ b/src/base/abci/abcUnate.c
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+/**CFile****************************************************************
+
+  FileName    [abcUnate.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Network and node package.]
+
+  Synopsis    []
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: abcUnate.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "abc.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static void Abc_NtkPrintUnateBdd( Abc_Ntk_t * pNtk, int fUseNaive, int fVerbose );
+static void Abc_NtkPrintUnateSat( Abc_Ntk_t * pNtk, int fVerbose );
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Detects unate variables of the multi-output function.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_NtkPrintUnate( Abc_Ntk_t * pNtk, int fUseBdds, int fUseNaive, int fVerbose )
+{
+    if ( fUseBdds || fUseNaive )
+        Abc_NtkPrintUnateBdd( pNtk, fUseNaive, fVerbose );
+    else
+        Abc_NtkPrintUnateSat( pNtk, fVerbose );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Detects unate variables using BDDs.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_NtkPrintUnateBdd( Abc_Ntk_t * pNtk, int fUseNaive, int fVerbose )
+{
+    Abc_Obj_t * pNode;
+    Extra_UnateInfo_t * p;
+    DdManager * dd;         // the BDD manager used to hold shared BDDs
+//    DdNode ** pbGlobal;     // temporary storage for global BDDs
+    int TotalSupps = 0;
+    int TotalUnate = 0;
+    int i, clk = clock();
+    int clkBdd, clkUnate;
+
+    // compute the global BDDs
+    dd = Abc_NtkBuildGlobalBdds(pNtk, 10000000, 1, 1, fVerbose);
+    if ( dd == NULL )
+        return;
+clkBdd = clock() - clk;
+
+    // get information about the network
+//    dd       = pNtk->pManGlob;
+//    dd       = Abc_NtkGlobalBddMan( pNtk );
+//    pbGlobal = (DdNode **)Vec_PtrArray( pNtk->vFuncsGlob );
+
+    // print the size of the BDDs
+    printf( "Shared BDD size = %6d nodes.\n", Cudd_ReadKeys(dd) - Cudd_ReadDead(dd) );
+
+    // perform naive BDD-based computation
+    if ( fUseNaive )
+    {
+        Abc_NtkForEachCo( pNtk, pNode, i )
+        {
+//            p = Extra_UnateComputeSlow( dd, pbGlobal[i] );
+            p = Extra_UnateComputeSlow( dd, Abc_ObjGlobalBdd(pNode) );
+            if ( fVerbose )
+                Extra_UnateInfoPrint( p );
+            TotalSupps += p->nVars;
+            TotalUnate += p->nUnate;
+            Extra_UnateInfoDissolve( p );
+        }
+    }
+    // perform smart BDD-based computation
+    else 
+    {
+        // create ZDD variables in the manager
+        Cudd_zddVarsFromBddVars( dd, 2 );
+        Abc_NtkForEachCo( pNtk, pNode, i )
+        {
+//            p = Extra_UnateComputeFast( dd, pbGlobal[i] );
+            p = Extra_UnateComputeFast( dd, Abc_ObjGlobalBdd(pNode) );
+            if ( fVerbose )
+                Extra_UnateInfoPrint( p );
+            TotalSupps += p->nVars;
+            TotalUnate += p->nUnate;
+            Extra_UnateInfoDissolve( p );
+        }
+    }
+clkUnate = clock() - clk - clkBdd;
+
+    // print stats
+    printf( "Ins/Outs = %4d/%4d.  Total supp = %5d.  Total unate = %5d.\n",
+        Abc_NtkCiNum(pNtk), Abc_NtkCoNum(pNtk), TotalSupps, TotalUnate );
+    PRT( "Glob BDDs", clkBdd );
+    PRT( "Unateness", clkUnate );
+    PRT( "Total    ", clock() - clk );
+
+    // deref the PO functions
+//    Abc_NtkFreeGlobalBdds( pNtk );
+    // stop the global BDD manager
+//    Extra_StopManager( pNtk->pManGlob );
+//    pNtk->pManGlob = NULL;
+    Abc_NtkFreeGlobalBdds( pNtk, 1 );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Detects unate variables using SAT.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_NtkPrintUnateSat( Abc_Ntk_t * pNtk, int fVerbose )
+{
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+