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/**CFile****************************************************************
FileName [simSym.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis [Simulation to determine two-variable symmetries.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: simSym.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "base/abc/abc.h"
#include "sim.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Computes two variable symmetries.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Sim_ComputeTwoVarSymms( Abc_Ntk_t * pNtk, int fVerbose )
{
Sym_Man_t * p;
Vec_Ptr_t * vResult;
int Result;
int i;
abctime clk, clkTotal = Abc_Clock();
srand( 0xABC );
// start the simulation manager
p = Sym_ManStart( pNtk, fVerbose );
p->nPairsTotal = p->nPairsRem = Sim_UtilCountAllPairs( p->vSuppFun, p->nSimWords, p->vPairsTotal );
if ( fVerbose )
printf( "Total = %8d. Sym = %8d. NonSym = %8d. Remaining = %8d.\n",
p->nPairsTotal, p->nPairsSymm, p->nPairsNonSymm, p->nPairsRem );
// detect symmetries using circuit structure
clk = Abc_Clock();
Sim_SymmsStructCompute( pNtk, p->vMatrSymms, p->vSuppFun );
p->timeStruct = Abc_Clock() - clk;
Sim_UtilCountPairsAll( p );
p->nPairsSymmStr = p->nPairsSymm;
if ( fVerbose )
printf( "Total = %8d. Sym = %8d. NonSym = %8d. Remaining = %8d.\n",
p->nPairsTotal, p->nPairsSymm, p->nPairsNonSymm, p->nPairsRem );
// detect symmetries using simulation
for ( i = 1; i <= 1000; i++ )
{
// simulate this pattern
Sim_UtilSetRandom( p->uPatRand, p->nSimWords );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
if ( i % 50 != 0 )
continue;
// check disjointness
assert( Sim_UtilMatrsAreDisjoint( p ) );
// count the number of pairs
Sim_UtilCountPairsAll( p );
if ( i % 500 != 0 )
continue;
if ( fVerbose )
printf( "Total = %8d. Sym = %8d. NonSym = %8d. Remaining = %8d.\n",
p->nPairsTotal, p->nPairsSymm, p->nPairsNonSymm, p->nPairsRem );
}
// detect symmetries using SAT
for ( i = 1; Sim_SymmsGetPatternUsingSat( p, p->uPatRand ); i++ )
{
// simulate this pattern in four polarities
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar1 );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar2 );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar1 );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar2 );
/*
// try the previuos pair
Sim_XorBit( p->uPatRand, p->iVar1Old );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar2Old );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
Sim_XorBit( p->uPatRand, p->iVar1Old );
Sim_SymmsSimulate( p, p->uPatRand, p->vMatrNonSymms );
*/
if ( i % 10 != 0 )
continue;
// check disjointness
assert( Sim_UtilMatrsAreDisjoint( p ) );
// count the number of pairs
Sim_UtilCountPairsAll( p );
if ( i % 50 != 0 )
continue;
if ( fVerbose )
printf( "Total = %8d. Sym = %8d. NonSym = %8d. Remaining = %8d.\n",
p->nPairsTotal, p->nPairsSymm, p->nPairsNonSymm, p->nPairsRem );
}
// count the number of pairs
Sim_UtilCountPairsAll( p );
if ( fVerbose )
printf( "Total = %8d. Sym = %8d. NonSym = %8d. Remaining = %8d.\n",
p->nPairsTotal, p->nPairsSymm, p->nPairsNonSymm, p->nPairsRem );
// Sim_UtilCountPairsAllPrint( p );
Result = p->nPairsSymm;
vResult = p->vMatrSymms;
p->timeTotal = Abc_Clock() - clkTotal;
// p->vMatrSymms = NULL;
Sym_ManStop( p );
return Result;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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