1 files changed, 163 insertions, 0 deletions
diff --git a/src/misc/mvc/mvcOpAlg.c b/src/misc/mvc/mvcOpAlg.c
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+++ b/src/misc/mvc/mvcOpAlg.c
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+/**CFile****************************************************************
+
+  FileName    [mvcOperAlg.c]
+
+  PackageName [MVSIS 2.0: Multi-valued logic synthesis system.]
+
+  Synopsis    [Miscellaneous operations on covers.]
+
+  Author      [MVSIS Group]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - February 1, 2003.]
+
+  Revision    [$Id: mvcOpAlg.c,v 1.4 2003/04/26 20:41:36 alanmi Exp $]
+
+***********************************************************************/
+
+#include "mvc.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Multiplies two disjoint-support covers.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Mvc_Cover_t * Mvc_CoverAlgebraicMultiply( Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
+{
+    Mvc_Cover_t * pCover;
+    Mvc_Cube_t * pCube1, * pCube2, * pCube;
+    int CompResult;
+
+    // covers should be the same base
+    assert( pCover1->nBits == pCover2->nBits );
+    // make sure that supports do not overlap
+    Mvc_CoverAllocateMask( pCover1 );
+    Mvc_CoverAllocateMask( pCover2 );
+    Mvc_CoverSupport( pCover1, pCover1->pMask );
+    Mvc_CoverSupport( pCover2, pCover2->pMask );
+    // check if the cubes are bit-wise disjoint
+    Mvc_CubeBitDisjoint( CompResult, pCover1->pMask, pCover2->pMask );
+    if ( !CompResult )
+        printf( "Mvc_CoverMultiply(): Cover supports are not disjoint!\n" );
+
+    // iterate through the cubes
+    pCover = Mvc_CoverClone( pCover1 );
+    Mvc_CoverForEachCube( pCover1, pCube1 )
+        Mvc_CoverForEachCube( pCover2, pCube2 )
+        { 
+            // create the product cube
+            pCube = Mvc_CubeAlloc( pCover );
+            // set the product cube equal to the product of the two cubes
+            Mvc_CubeBitOr( pCube, pCube1, pCube2 );
+            // add the cube to the cover
+            Mvc_CoverAddCubeTail( pCover, pCube );
+        }
+    return pCover;
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    [Subtracts the second cover from the first.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Mvc_Cover_t * Mvc_CoverAlgebraicSubtract( Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
+{
+    Mvc_Cover_t * pCover;
+    Mvc_Cube_t * pCube1, * pCube2, * pCube;
+    int fFound;
+    int CompResult;
+
+    // covers should be the same base
+    assert( pCover1->nBits == pCover2->nBits );
+
+    // iterate through the cubes
+    pCover = Mvc_CoverClone( pCover1 );
+    Mvc_CoverForEachCube( pCover1, pCube1 )
+    {
+        fFound = 0;
+        Mvc_CoverForEachCube( pCover2, pCube2 )
+        {
+            Mvc_CubeBitEqual( CompResult, pCube1, pCube2 );
+            if ( CompResult )
+            {
+                fFound = 1;
+                break;
+            }
+        }
+        if ( !fFound )
+        { 
+            // create the copy of the cube
+            pCube = Mvc_CubeDup( pCover, pCube1 );
+            // add the cube copy to the cover
+            Mvc_CoverAddCubeTail( pCover, pCube );
+        }
+    }
+    return pCover;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Mvc_CoverAlgebraicEqual( Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
+{
+    Mvc_Cube_t * pCube1, * pCube2;
+    int fFound;
+    int CompResult;
+
+    // covers should be the same base
+    assert( pCover1->nBits == pCover2->nBits );
+    // iterate through the cubes
+    Mvc_CoverForEachCube( pCover1, pCube1 )
+    {
+        fFound = 0;
+        Mvc_CoverForEachCube( pCover2, pCube2 )
+        {
+            Mvc_CubeBitEqual( CompResult, pCube1, pCube2 );
+            if ( CompResult )
+            {
+                fFound = 1;
+                break;
+            }
+        }
+        if ( !fFound )
+            return 0;
+    }
+    return 1;
+}
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+