Isomorphism checking code.

src/aig/saig/saigIso.c

@@ -503,6 +503,12 @@ Aig_Man_t * Iso_ManFilterPos( Aig_Man_t * pAig, Vec_Ptr_t ** pvPosEquivs, int fV
         printf( " Unique = %d\n", nUnique );
     }
 */
+
+    // canonicize order
+    Vec_PtrForEachEntry( Vec_Int_t *, vClasses, vLevel, i )
+        Vec_IntSort( vLevel, 0 );
+     Vec_VecSortByFirstInt( (Vec_Vec_t *)vClasses, 0 );
+       
     // collect the first ones
     vRemain = Vec_IntAlloc( 100 );
     Vec_PtrForEachEntry( Vec_Int_t *, vClasses, vLevel, i )

src/misc/vec/vecVec.h

@@ -588,6 +588,67 @@ static inline void Vec_VecSort( Vec_Vec_t * p, int fReverse )
 
 /**Function*************************************************************
 
+  Synopsis    [Comparison procedure for two integers.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static int Vec_VecSortCompare3( Vec_Int_t ** pp1, Vec_Int_t ** pp2 )
+{
+    if ( Vec_IntEntry(*pp1,0) < Vec_IntEntry(*pp2,0) )
+        return -1;
+    if ( Vec_IntEntry(*pp1,0) > Vec_IntEntry(*pp2,0) ) 
+        return 1;
+    return 0; 
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Comparison procedure for two integers.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static int Vec_VecSortCompare4( Vec_Int_t ** pp1, Vec_Int_t ** pp2 )
+{
+    if ( Vec_IntEntry(*pp1,0) > Vec_IntEntry(*pp2,0) )
+        return -1;
+    if ( Vec_IntEntry(*pp1,0) < Vec_IntEntry(*pp2,0) ) 
+        return 1;
+    return 0; 
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Sorting the entries by their integer value.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static inline void Vec_VecSortByFirstInt( Vec_Vec_t * p, int fReverse )
+{
+    if ( fReverse ) 
+        qsort( (void *)p->pArray, p->nSize, sizeof(void *), 
+                (int (*)(const void *, const void *)) Vec_VecSortCompare4 );
+    else
+        qsort( (void *)p->pArray, p->nSize, sizeof(void *), 
+                (int (*)(const void *, const void *)) Vec_VecSortCompare3 );
+}
+
+/**Function*************************************************************
+
   Synopsis    []
 
   Description []