Experiments with permutations.

2 files changed, 141 insertions, 0 deletions

diff --git a/src/misc/extra/extraUtilCube.c b/src/misc/extra/extraUtilCube.c
new file mode 100644
index 00000000..b08a4a21
--- /dev/null
+++ b/src/misc/extra/extraUtilCube.c
@@ -0,0 +1,140 @@
+/**CFile****************************************************************
+
+  FileName    [extraUtilCube.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [extra]
+
+  Synopsis    [Permutation computation.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: extraUtilCube.c,v 1.0 2003/02/01 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include "misc/vec/vec.h"
+#include "misc/vec/vecHsh.h"
+
+ABC_NAMESPACE_IMPL_START
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static inline void Abc_StatePush( Vec_Int_t * vData, char * pState, int k )  { int i; for ( i = 0; i < 6; i++ ) Vec_IntWriteEntry(vData, 6*k+i, ((int*)pState)[i]);  }
+static inline void Abc_StatePerm( char * pState, char * pPerm, char * pRes ) { int i; for ( i = 0; i < 24; i++ ) pRes[i] = pState[pPerm[i]];                         }
+static inline void Abc_StatePrint( char * pState )                           { int i; for ( i = 0; i < 24; i++ ) printf(" %2d", pState[i]); printf( "\n" );          }
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_EnumerateCubeStates()
+{
+    int pXYZ[3][9][2] = {
+        { {3, 5}, {3,17}, {3,15}, {1, 6}, {1,16}, {1,14}, {2, 4}, {2,18}, {2,13} },
+        { {2,14}, {2,24}, {2,12}, {3,13}, {3,23}, {3,10}, {1,15}, {1,22}, {1,11} },
+        { {1,10}, {1, 7}, {1, 4}, {3,12}, {3, 9}, {3, 6}, {2,11}, {2, 8}, {2, 5} }  };
+
+    Vec_Int_t * vData = Vec_IntStart( 6 * (1 << 22) );
+    Hsh_IntMan_t * vHash = Hsh_IntManStart( vData, 6, 1 << 22 );
+    int i, k, v, RetValue, Beg, End, Counter = 0;
+    char pStart[24], pFirst[9][24];
+    abctime clk = Abc_Clock();
+    printf( "Enumerating states of 2x2x2 cube.\n" );
+    // init state
+    for ( v = 0; v < 24; v++ )
+        pStart[v] = v;
+    Abc_StatePush( vData, pStart, Counter );
+    RetValue = Hsh_IntManAdd( vHash, Counter );
+    assert( RetValue == Counter );
+    Counter++;
+    // first nine states
+    for ( i = 0; i < 3; i++ )
+    {
+        memcpy( pFirst[i], pStart, 24 );
+        for ( v = 0; v < 9; v++ )
+            ABC_SWAP( char, pFirst[i][pXYZ[i][v][0]-1], pFirst[i][pXYZ[i][v][1]-1] );
+        Abc_StatePush( vData, pFirst[i], Counter );
+        RetValue = Hsh_IntManAdd( vHash, Counter );
+        assert( RetValue == Counter );
+        Counter++;
+        //Abc_StatePrint( pFirst[i] );
+
+        memcpy( pFirst[3+i], pFirst[i], 24 );
+        for ( v = 0; v < 9; v++ )
+            ABC_SWAP( char, pFirst[3+i][pXYZ[i][v][0]-1], pFirst[3+i][pXYZ[i][v][1]-1] );
+        Abc_StatePush( vData, pFirst[3+i], Counter );
+        RetValue = Hsh_IntManAdd( vHash, Counter );
+        assert( RetValue == Counter );
+        Counter++;
+        //Abc_StatePrint( pFirst[3+i] );
+
+        memcpy( pFirst[6+i], pFirst[3+i], 24 );
+        for ( v = 0; v < 9; v++ )
+            ABC_SWAP( char, pFirst[6+i][pXYZ[i][v][0]-1], pFirst[6+i][pXYZ[i][v][1]-1] );
+        Abc_StatePush( vData, pFirst[6+i], Counter );
+        RetValue = Hsh_IntManAdd( vHash, Counter );
+        assert( RetValue == Counter );
+        Counter++;
+        //Abc_StatePrint( pFirst[6+i] );
+    }
+    printf( "Iter %2d -> %8d   ", 0, 1 );
+    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    printf( "Iter %2d -> %8d   ", 1, Counter );
+    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    Beg = 1;  End = 10;
+    for ( i = 2; i <= 100; i++ )
+    {
+        if ( Beg == End )
+            break;
+        for ( k = Beg; k < End; k++ )
+            for ( v = 0; v < 9; v++ )
+            {
+                Abc_StatePerm( (char *)Vec_IntEntryP(vData, 6*k), pFirst[v], (char *)Vec_IntEntryP(vData, 6*Counter) );
+                RetValue = Hsh_IntManAdd( vHash, Counter );
+                if ( RetValue == Counter )
+                    Counter++;
+                if ( Counter == (1<<22) )
+                {
+                    printf( "Did not converge.  " );
+                    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+                    return;
+                }
+            }
+        Beg = End;  End = Counter;
+        printf( "Iter %2d -> %8d   ", i, Counter );
+        Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    }
+    Hsh_IntManStop( vHash );
+    Vec_IntFree( vData );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
diff --git a/src/misc/extra/module.make b/src/misc/extra/module.make
index 9c13c146..8a66c4b7 100644
--- a/src/misc/extra/module.make
+++ b/src/misc/extra/module.make
@@ -8,6 +8,7 @@ SRC +=    src/misc/extra/extraBddAuto.c \
     src/misc/extra/extraBddUnate.c \
     src/misc/extra/extraUtilBitMatrix.c \
     src/misc/extra/extraUtilCanon.c \
+    src/misc/extra/extraUtilCube.c \
     src/misc/extra/extraUtilDsd.c \
     src/misc/extra/extraUtilFile.c \
     src/misc/extra/extraUtilMemory.c \