abc/src/misc/mvc/mvcOpBool.c

/**CFile****************************************************************

  FileName    [mvcProc.c]

  PackageName [MVSIS 2.0: Multi-valued logic synthesis system.]

  Synopsis    [Various boolean procedures working with covers.]

  Author      [MVSIS Group]
  
  Affiliation [UC Berkeley]

  Date        [Ver. 1.0. Started - February 1, 2003.]

  Revision    [$Id: mvcOpBool.c,v 1.4 2003/04/16 01:55:37 alanmi Exp $]

***********************************************************************/

#include "mvc.h"

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///                        DECLARATIONS                              ///
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///                     FUNCTION DEFINITIONS                         ///
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/**Function*************************************************************

  Synopsis    []

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
Mvc_Cover_t * Mvc_CoverBooleanOr( Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
{
    Mvc_Cover_t * pCover;
    Mvc_Cube_t * pCube, * pCubeCopy;
    // make sure the covers are compatible
    assert( pCover1->nBits == pCover2->nBits );
    // clone the cover
    pCover = Mvc_CoverClone( pCover1 );
    // create the cubes by making pair-wise products
    // of cubes in pCover1 and pCover2
    Mvc_CoverForEachCube( pCover1, pCube )
    {
        pCubeCopy = Mvc_CubeDup( pCover, pCube );
        Mvc_CoverAddCubeTail( pCover, pCubeCopy );
    }
    Mvc_CoverForEachCube( pCover2, pCube )
    {
        pCubeCopy = Mvc_CubeDup( pCover, pCube );
        Mvc_CoverAddCubeTail( pCover, pCubeCopy );
    }
    return pCover;
}

#if 0

/**Function*************************************************************

  Synopsis    []

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
Mvc_Cover_t * Mvc_CoverBooleanAnd( Mvc_Data_t * p, Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
{
    Mvc_Cover_t * pCover;
    Mvc_Cube_t * pCube1, * pCube2, * pCubeCopy;
    // make sure the covers are compatible
    assert( pCover1->nBits == pCover2->nBits );
    // clone the cover
    pCover = Mvc_CoverClone( pCover1 );
    // create the cubes by making pair-wise products
    // of cubes in pCover1 and pCover2
    Mvc_CoverForEachCube( pCover1, pCube1 )
    {
        Mvc_CoverForEachCube( pCover2, pCube2 )
        {
            if ( Mvc_CoverDist0Cubes( p, pCube1, pCube2 ) )
            {
                pCubeCopy = Mvc_CubeAlloc( pCover );
                Mvc_CubeBitAnd( pCubeCopy, pCube1, pCube2 );
                Mvc_CoverAddCubeTail( pCover, pCubeCopy );
            }
        }
        // if the number of cubes in the new cover is too large
        // try compressing them
        if ( Mvc_CoverReadCubeNum( pCover ) > 500 )
            Mvc_CoverContain( pCover );
    }
    return pCover;
}

/**Function*************************************************************

  Synopsis    [Returns 1 if the two covers are equal.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
int Mvc_CoverBooleanEqual( Mvc_Data_t * p, Mvc_Cover_t * pCover1, Mvc_Cover_t * pCover2 )
{
    Mvc_Cover_t * pSharp;

    pSharp = Mvc_CoverSharp( p, pCover1, pCover2 );
    if ( Mvc_CoverReadCubeNum( pSharp ) )
    {
Mvc_CoverContain( pSharp );
printf( "Sharp \n" );
Mvc_CoverPrint( pSharp );
        Mvc_CoverFree( pSharp );
        return 0;
    }
    Mvc_CoverFree( pSharp );

    pSharp = Mvc_CoverSharp( p, pCover2, pCover1 );
    if ( Mvc_CoverReadCubeNum( pSharp ) )
    {
Mvc_CoverContain( pSharp );
printf( "Sharp \n" );
Mvc_CoverPrint( pSharp );
        Mvc_CoverFree( pSharp );
        return 0;
    }
    Mvc_CoverFree( pSharp );

    return 1;
}

#endif

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