Experiments with CEC for arithmetic circuits.

1 files changed, 87 insertions, 0 deletions

diff --git a/src/proof/acec/acecUtil.c b/src/proof/acec/acecUtil.c
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+/**CFile****************************************************************
+
+  FileName    [acecUtil.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [CEC for arithmetic circuits.]
+
+  Synopsis    [Various utilities.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: acecUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "acecInt.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Gia_PolynCollectXors_rec( Gia_Man_t * pGia, int iObj, Vec_Int_t * vXors )
+{
+    Gia_Obj_t * pObj = Gia_ManObj( pGia, iObj );
+    if ( Gia_ObjIsTravIdCurrent(pGia, pObj) )
+        return;
+    Gia_ObjSetTravIdCurrent(pGia, pObj);
+    if ( !Gia_ObjIsAnd(pObj) || !Gia_ObjIsXor(pObj) )
+        return;
+    Vec_IntPush( vXors, iObj );
+    Gia_PolynCollectXors_rec( pGia, Gia_ObjFaninId0(pObj, iObj), vXors );
+    Gia_PolynCollectXors_rec( pGia, Gia_ObjFaninId1(pObj, iObj), vXors );
+}
+void Gia_PolynAnalyzeXors( Gia_Man_t * pGia, int fVerbose )
+{
+    int i, iDriver, Count = 0;
+    Vec_Int_t * vXors = Vec_IntAlloc( 100 );
+    if ( pGia->pMuxes == NULL )
+    {
+        printf( "AIG does not have XORs extracted.\n" );
+        return;
+    }
+    assert( pGia->pMuxes );
+    Gia_ManForEachCoDriverId( pGia, iDriver, i )
+    {
+        Vec_IntClear( vXors );
+        Gia_ManIncrementTravId( pGia );
+        Gia_PolynCollectXors_rec( pGia, iDriver, vXors );
+        //printf( "%3d : ", i );
+        //Vec_IntPrint( vXors );
+        printf( "%d=%d  ", i, Vec_IntSize(vXors) );
+        Count += Vec_IntSize(vXors);
+    }
+    printf( "Total = %d.\n", Count );
+    Vec_IntFree( vXors );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+