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-/**CFile****************************************************************
-
- FileName [ivy.h]
-
- SystemName [ABC: Logic synthesis and verification system.]
-
- PackageName [And-Inverter Graph package.]
-
- Synopsis [External declarations.]
-
- Author [Alan Mishchenko]
-
- Affiliation [UC Berkeley]
-
- Date [Ver. 1.0. Started - May 11, 2006.]
-
- Revision [$Id: ivy.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#ifndef __IVY_H__
-#define __IVY_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-////////////////////////////////////////////////////////////////////////
-/// INCLUDES ///
-////////////////////////////////////////////////////////////////////////
-
-#include <stdio.h>
-#include "extra.h"
-#include "vec.h"
-
-////////////////////////////////////////////////////////////////////////
-/// PARAMETERS ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-/// BASIC TYPES ///
-////////////////////////////////////////////////////////////////////////
-
-typedef struct Ivy_Man_t_ Ivy_Man_t;
-typedef struct Ivy_Obj_t_ Ivy_Obj_t;
-typedef int Ivy_Edge_t;
-typedef struct Ivy_FraigParams_t_ Ivy_FraigParams_t;
-
-// object types
-typedef enum {
- IVY_NONE, // 0: non-existent object
- IVY_PI, // 1: primary input (and constant 1 node)
- IVY_PO, // 2: primary output
- IVY_ASSERT, // 3: assertion
- IVY_LATCH, // 4: sequential element
- IVY_AND, // 5: AND node
- IVY_EXOR, // 6: EXOR node
- IVY_BUF, // 7: buffer (temporary)
- IVY_VOID // 8: unused object
-} Ivy_Type_t;
-
-// latch initial values
-typedef enum {
- IVY_INIT_NONE, // 0: not a latch
- IVY_INIT_0, // 1: zero
- IVY_INIT_1, // 2: one
- IVY_INIT_DC // 3: don't-care
-} Ivy_Init_t;
-
-// the AIG node
-struct Ivy_Obj_t_ // 24 bytes (32-bit) or 32 bytes (64-bit) // 10 words - 16 words
-{
- int Id; // integer ID
- int TravId; // traversal ID
- unsigned Type : 4; // object type
- unsigned fMarkA : 1; // multipurpose mask
- unsigned fMarkB : 1; // multipurpose mask
- unsigned fExFan : 1; // set to 1 if last fanout added is EXOR
- unsigned fPhase : 1; // value under 000...0 pattern
- unsigned fFailTfo : 1; // the TFO of the failed node
- unsigned Init : 2; // latch initial value
- unsigned Level : 21; // logic level
- int nRefs; // reference counter
- Ivy_Obj_t * pFanin0; // fanin
- Ivy_Obj_t * pFanin1; // fanin
- Ivy_Obj_t * pFanout; // fanout
- Ivy_Obj_t * pNextFan0; // next fanout of the first fanin
- Ivy_Obj_t * pNextFan1; // next fanout of the second fanin
- Ivy_Obj_t * pPrevFan0; // prev fanout of the first fanin
- Ivy_Obj_t * pPrevFan1; // prev fanout of the second fanin
- Ivy_Obj_t * pEquiv; // equivalent node
-};
-
-// the AIG manager
-struct Ivy_Man_t_
-{
- // AIG nodes
- Vec_Ptr_t * vPis; // the array of PIs
- Vec_Ptr_t * vPos; // the array of POs
- Vec_Ptr_t * vBufs; // the array of buffers
- Vec_Ptr_t * vObjs; // the array of objects
- Ivy_Obj_t * pConst1; // the constant 1 node
- Ivy_Obj_t Ghost; // the ghost node
- // AIG node counters
- int nObjs[IVY_VOID];// the number of objects by type
- int nCreated; // the number of created objects
- int nDeleted; // the number of deleted objects
- // stuctural hash table
- int * pTable; // structural hash table
- int nTableSize; // structural hash table size
- // various data members
- int fCatchExor; // set to 1 to detect EXORs
- int nTravIds; // the traversal ID
- int nLevelMax; // the maximum level
- Vec_Int_t * vRequired; // required times
- int fFanout; // fanout is allocated
- void * pData; // the temporary data
- void * pCopy; // the temporary data
- Ivy_Man_t * pHaig; // history AIG if present
- int nClassesSkip; // the number of skipped classes
- // memory management
- Vec_Ptr_t * vChunks; // allocated memory pieces
- Vec_Ptr_t * vPages; // memory pages used by nodes
- Ivy_Obj_t * pListFree; // the list of free nodes
- // timing statistics
- int time1;
- int time2;
-};
-
-struct Ivy_FraigParams_t_
-{
- int nSimWords; // the number of words in the simulation info
- double dSimSatur; // the ratio of refined classes when saturation is reached
- int fPatScores; // enables simulation pattern scoring
- int MaxScore; // max score after which resimulation is used
- double dActConeRatio; // the ratio of cone to be bumped
- double dActConeBumpMax; // the largest bump in activity
- int fProve; // prove the miter outputs
- int fVerbose; // verbose output
- int fDoSparse; // skip sparse functions
- int nBTLimitNode; // conflict limit at a node
- int nBTLimitMiter; // conflict limit at an output
-// int nBTLimitGlobal; // conflict limit global
-// int nInsLimitNode; // inspection limit at a node
-// int nInsLimitMiter; // inspection limit at an output
-// int nInsLimitGlobal; // inspection limit global
-};
-
-
-#define IVY_CUT_LIMIT 256
-#define IVY_CUT_INPUT 6
-
-typedef struct Ivy_Cut_t_ Ivy_Cut_t;
-struct Ivy_Cut_t_
-{
- int nLatches;
- short nSize;
- short nSizeMax;
- int pArray[IVY_CUT_INPUT];
- unsigned uHash;
-};
-
-typedef struct Ivy_Store_t_ Ivy_Store_t;
-struct Ivy_Store_t_
-{
- int nCuts;
- int nCutsM;
- int nCutsMax;
- int fSatur;
- Ivy_Cut_t pCuts[IVY_CUT_LIMIT]; // storage for cuts
-};
-
-#define IVY_LEAF_MASK 255
-#define IVY_LEAF_BITS 8
-
-////////////////////////////////////////////////////////////////////////
-/// MACRO DEFINITIONS ///
-////////////////////////////////////////////////////////////////////////
-
-#define IVY_MIN(a,b) (((a) < (b))? (a) : (b))
-#define IVY_MAX(a,b) (((a) > (b))? (a) : (b))
-
-static inline int Ivy_BitWordNum( int nBits ) { return (nBits>>5) + ((nBits&31) > 0); }
-static inline int Ivy_TruthWordNum( int nVars ) { return nVars <= 5 ? 1 : (1 << (nVars - 5)); }
-static inline int Ivy_InfoHasBit( unsigned * p, int i ) { return (p[(i)>>5] & (1<<((i) & 31))) > 0; }
-static inline void Ivy_InfoSetBit( unsigned * p, int i ) { p[(i)>>5] |= (1<<((i) & 31)); }
-static inline void Ivy_InfoXorBit( unsigned * p, int i ) { p[(i)>>5] ^= (1<<((i) & 31)); }
-
-static inline Ivy_Obj_t * Ivy_Regular( Ivy_Obj_t * p ) { return (Ivy_Obj_t *)((unsigned long)(p) & ~01); }
-static inline Ivy_Obj_t * Ivy_Not( Ivy_Obj_t * p ) { return (Ivy_Obj_t *)((unsigned long)(p) ^ 01); }
-static inline Ivy_Obj_t * Ivy_NotCond( Ivy_Obj_t * p, int c ) { return (Ivy_Obj_t *)((unsigned long)(p) ^ (c)); }
-static inline int Ivy_IsComplement( Ivy_Obj_t * p ) { return (int )(((unsigned long)p) & 01); }
-
-static inline Ivy_Obj_t * Ivy_ManConst0( Ivy_Man_t * p ) { return Ivy_Not(p->pConst1); }
-static inline Ivy_Obj_t * Ivy_ManConst1( Ivy_Man_t * p ) { return p->pConst1; }
-static inline Ivy_Obj_t * Ivy_ManGhost( Ivy_Man_t * p ) { return &p->Ghost; }
-static inline Ivy_Obj_t * Ivy_ManPi( Ivy_Man_t * p, int i ) { return (Ivy_Obj_t *)Vec_PtrEntry(p->vPis, i); }
-static inline Ivy_Obj_t * Ivy_ManPo( Ivy_Man_t * p, int i ) { return (Ivy_Obj_t *)Vec_PtrEntry(p->vPos, i); }
-static inline Ivy_Obj_t * Ivy_ManObj( Ivy_Man_t * p, int i ) { return (Ivy_Obj_t *)Vec_PtrEntry(p->vObjs, i); }
-
-static inline Ivy_Edge_t Ivy_EdgeCreate( int Id, int fCompl ) { return (Id << 1) | fCompl; }
-static inline int Ivy_EdgeId( Ivy_Edge_t Edge ) { return Edge >> 1; }
-static inline int Ivy_EdgeIsComplement( Ivy_Edge_t Edge ) { return Edge & 1; }
-static inline Ivy_Edge_t Ivy_EdgeRegular( Ivy_Edge_t Edge ) { return (Edge >> 1) << 1; }
-static inline Ivy_Edge_t Ivy_EdgeNot( Ivy_Edge_t Edge ) { return Edge ^ 1; }
-static inline Ivy_Edge_t Ivy_EdgeNotCond( Ivy_Edge_t Edge, int fCond ) { return Edge ^ fCond; }
-static inline Ivy_Edge_t Ivy_EdgeFromNode( Ivy_Obj_t * pNode ) { return Ivy_EdgeCreate( Ivy_Regular(pNode)->Id, Ivy_IsComplement(pNode) ); }
-static inline Ivy_Obj_t * Ivy_EdgeToNode( Ivy_Man_t * p, Ivy_Edge_t Edge ){ return Ivy_NotCond( Ivy_ManObj(p, Ivy_EdgeId(Edge)), Ivy_EdgeIsComplement(Edge) ); }
-
-static inline int Ivy_LeafCreate( int Id, int Lat ) { return (Id << IVY_LEAF_BITS) | Lat; }
-static inline int Ivy_LeafId( int Leaf ) { return Leaf >> IVY_LEAF_BITS; }
-static inline int Ivy_LeafLat( int Leaf ) { return Leaf & IVY_LEAF_MASK; }
-
-static inline int Ivy_ManPiNum( Ivy_Man_t * p ) { return p->nObjs[IVY_PI]; }
-static inline int Ivy_ManPoNum( Ivy_Man_t * p ) { return p->nObjs[IVY_PO]; }
-static inline int Ivy_ManAssertNum( Ivy_Man_t * p ) { return p->nObjs[IVY_ASSERT]; }
-static inline int Ivy_ManLatchNum( Ivy_Man_t * p ) { return p->nObjs[IVY_LATCH]; }
-static inline int Ivy_ManAndNum( Ivy_Man_t * p ) { return p->nObjs[IVY_AND]; }
-static inline int Ivy_ManExorNum( Ivy_Man_t * p ) { return p->nObjs[IVY_EXOR]; }
-static inline int Ivy_ManBufNum( Ivy_Man_t * p ) { return p->nObjs[IVY_BUF]; }
-static inline int Ivy_ManObjNum( Ivy_Man_t * p ) { return p->nCreated - p->nDeleted; }
-static inline int Ivy_ManObjIdMax( Ivy_Man_t * p ) { return Vec_PtrSize(p->vObjs)-1; }
-static inline int Ivy_ManNodeNum( Ivy_Man_t * p ) { return p->nObjs[IVY_AND]+p->nObjs[IVY_EXOR];}
-static inline int Ivy_ManHashObjNum( Ivy_Man_t * p ) { return p->nObjs[IVY_AND]+p->nObjs[IVY_EXOR]+p->nObjs[IVY_LATCH]; }
-static inline int Ivy_ManGetCost( Ivy_Man_t * p ) { return p->nObjs[IVY_AND]+3*p->nObjs[IVY_EXOR]+8*p->nObjs[IVY_LATCH]; }
-
-static inline Ivy_Type_t Ivy_ObjType( Ivy_Obj_t * pObj ) { return pObj->Type; }
-static inline Ivy_Init_t Ivy_ObjInit( Ivy_Obj_t * pObj ) { return pObj->Init; }
-static inline int Ivy_ObjIsConst1( Ivy_Obj_t * pObj ) { return pObj->Id == 0; }
-static inline int Ivy_ObjIsGhost( Ivy_Obj_t * pObj ) { return pObj->Id < 0; }
-static inline int Ivy_ObjIsNone( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_NONE; }
-static inline int Ivy_ObjIsPi( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PI; }
-static inline int Ivy_ObjIsPo( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PO; }
-static inline int Ivy_ObjIsCi( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PI || pObj->Type == IVY_LATCH; }
-static inline int Ivy_ObjIsCo( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PO || pObj->Type == IVY_LATCH; }
-static inline int Ivy_ObjIsAssert( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_ASSERT; }
-static inline int Ivy_ObjIsLatch( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_LATCH; }
-static inline int Ivy_ObjIsAnd( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_AND; }
-static inline int Ivy_ObjIsExor( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_EXOR; }
-static inline int Ivy_ObjIsBuf( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_BUF; }
-static inline int Ivy_ObjIsNode( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_AND || pObj->Type == IVY_EXOR; }
-static inline int Ivy_ObjIsTerm( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PI || pObj->Type == IVY_PO || pObj->Type == IVY_ASSERT; }
-static inline int Ivy_ObjIsHash( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_AND || pObj->Type == IVY_EXOR || pObj->Type == IVY_LATCH; }
-static inline int Ivy_ObjIsOneFanin( Ivy_Obj_t * pObj ) { return pObj->Type == IVY_PO || pObj->Type == IVY_ASSERT || pObj->Type == IVY_BUF || pObj->Type == IVY_LATCH; }
-
-static inline int Ivy_ObjIsMarkA( Ivy_Obj_t * pObj ) { return pObj->fMarkA; }
-static inline void Ivy_ObjSetMarkA( Ivy_Obj_t * pObj ) { pObj->fMarkA = 1; }
-static inline void Ivy_ObjClearMarkA( Ivy_Obj_t * pObj ) { pObj->fMarkA = 0; }
-
-static inline void Ivy_ObjSetTravId( Ivy_Obj_t * pObj, int TravId ) { pObj->TravId = TravId; }
-static inline void Ivy_ObjSetTravIdCurrent( Ivy_Man_t * p, Ivy_Obj_t * pObj ) { pObj->TravId = p->nTravIds; }
-static inline void Ivy_ObjSetTravIdPrevious( Ivy_Man_t * p, Ivy_Obj_t * pObj ) { pObj->TravId = p->nTravIds - 1; }
-static inline int Ivy_ObjIsTravIdCurrent( Ivy_Man_t * p, Ivy_Obj_t * pObj ) { return (int )((int)pObj->TravId == p->nTravIds); }
-static inline int Ivy_ObjIsTravIdPrevious( Ivy_Man_t * p, Ivy_Obj_t * pObj ) { return (int )((int)pObj->TravId == p->nTravIds - 1); }
-
-static inline int Ivy_ObjId( Ivy_Obj_t * pObj ) { return pObj->Id; }
-static inline int Ivy_ObjTravId( Ivy_Obj_t * pObj ) { return pObj->TravId; }
-static inline int Ivy_ObjPhase( Ivy_Obj_t * pObj ) { return pObj->fPhase; }
-static inline int Ivy_ObjExorFanout( Ivy_Obj_t * pObj ) { return pObj->fExFan; }
-static inline int Ivy_ObjRefs( Ivy_Obj_t * pObj ) { return pObj->nRefs; }
-static inline void Ivy_ObjRefsInc( Ivy_Obj_t * pObj ) { pObj->nRefs++; }
-static inline void Ivy_ObjRefsDec( Ivy_Obj_t * pObj ) { assert( pObj->nRefs > 0 ); pObj->nRefs--; }
-static inline int Ivy_ObjFaninId0( Ivy_Obj_t * pObj ) { return pObj->pFanin0? Ivy_ObjId(Ivy_Regular(pObj->pFanin0)) : 0; }
-static inline int Ivy_ObjFaninId1( Ivy_Obj_t * pObj ) { return pObj->pFanin1? Ivy_ObjId(Ivy_Regular(pObj->pFanin1)) : 0; }
-static inline int Ivy_ObjFaninC0( Ivy_Obj_t * pObj ) { return Ivy_IsComplement(pObj->pFanin0); }
-static inline int Ivy_ObjFaninC1( Ivy_Obj_t * pObj ) { return Ivy_IsComplement(pObj->pFanin1); }
-static inline Ivy_Obj_t * Ivy_ObjFanin0( Ivy_Obj_t * pObj ) { return Ivy_Regular(pObj->pFanin0); }
-static inline Ivy_Obj_t * Ivy_ObjFanin1( Ivy_Obj_t * pObj ) { return Ivy_Regular(pObj->pFanin1); }
-static inline Ivy_Obj_t * Ivy_ObjChild0( Ivy_Obj_t * pObj ) { return pObj->pFanin0; }
-static inline Ivy_Obj_t * Ivy_ObjChild1( Ivy_Obj_t * pObj ) { return pObj->pFanin1; }
-static inline Ivy_Obj_t * Ivy_ObjChild0Equiv( Ivy_Obj_t * pObj ) { assert( !Ivy_IsComplement(pObj) ); return Ivy_ObjFanin0(pObj)? Ivy_NotCond(Ivy_ObjFanin0(pObj)->pEquiv, Ivy_ObjFaninC0(pObj)) : NULL; }
-static inline Ivy_Obj_t * Ivy_ObjChild1Equiv( Ivy_Obj_t * pObj ) { assert( !Ivy_IsComplement(pObj) ); return Ivy_ObjFanin1(pObj)? Ivy_NotCond(Ivy_ObjFanin1(pObj)->pEquiv, Ivy_ObjFaninC1(pObj)) : NULL; }
-static inline Ivy_Obj_t * Ivy_ObjEquiv( Ivy_Obj_t * pObj ) { return Ivy_Regular(pObj)->pEquiv? Ivy_NotCond(Ivy_Regular(pObj)->pEquiv, Ivy_IsComplement(pObj)) : NULL; }
-static inline int Ivy_ObjLevel( Ivy_Obj_t * pObj ) { return pObj->Level; }
-static inline int Ivy_ObjLevelNew( Ivy_Obj_t * pObj ) { return 1 + Ivy_ObjIsExor(pObj) + IVY_MAX(Ivy_ObjFanin0(pObj)->Level, Ivy_ObjFanin1(pObj)->Level); }
-static inline int Ivy_ObjFaninPhase( Ivy_Obj_t * pObj ) { return Ivy_IsComplement(pObj)? !Ivy_Regular(pObj)->fPhase : pObj->fPhase; }
-
-static inline void Ivy_ObjClean( Ivy_Obj_t * pObj )
-{
- int IdSaved = pObj->Id;
- memset( pObj, 0, sizeof(Ivy_Obj_t) );
- pObj->Id = IdSaved;
-}
-static inline void Ivy_ObjOverwrite( Ivy_Obj_t * pBase, Ivy_Obj_t * pData )
-{
- int IdSaved = pBase->Id;
- memcpy( pBase, pData, sizeof(Ivy_Obj_t) );
- pBase->Id = IdSaved;
-}
-static inline int Ivy_ObjWhatFanin( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanin )
-{
- if ( Ivy_ObjFanin0(pObj) == pFanin ) return 0;
- if ( Ivy_ObjFanin1(pObj) == pFanin ) return 1;
- assert(0); return -1;
-}
-static inline int Ivy_ObjFanoutC( Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout )
-{
- if ( Ivy_ObjFanin0(pFanout) == pObj ) return Ivy_ObjFaninC0(pObj);
- if ( Ivy_ObjFanin1(pFanout) == pObj ) return Ivy_ObjFaninC1(pObj);
- assert(0); return -1;
-}
-
-// create the ghost of the new node
-static inline Ivy_Obj_t * Ivy_ObjCreateGhost( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Type_t Type, Ivy_Init_t Init )
-{
- Ivy_Obj_t * pGhost, * pTemp;
- assert( Type != IVY_AND || !Ivy_ObjIsConst1(Ivy_Regular(p0)) );
- assert( p1 == NULL || !Ivy_ObjIsConst1(Ivy_Regular(p1)) );
- assert( Type == IVY_PI || Ivy_Regular(p0) != Ivy_Regular(p1) );
- assert( Type != IVY_LATCH || !Ivy_IsComplement(p0) );
-// assert( p1 == NULL || (!Ivy_ObjIsLatch(Ivy_Regular(p0)) || !Ivy_ObjIsLatch(Ivy_Regular(p1))) );
- pGhost = Ivy_ManGhost(p);
- pGhost->Type = Type;
- pGhost->Init = Init;
- pGhost->pFanin0 = p0;
- pGhost->pFanin1 = p1;
- if ( p1 && Ivy_ObjFaninId0(pGhost) > Ivy_ObjFaninId1(pGhost) )
- pTemp = pGhost->pFanin0, pGhost->pFanin0 = pGhost->pFanin1, pGhost->pFanin1 = pTemp;
- return pGhost;
-}
-
-// get the complemented initial state
-static Ivy_Init_t Ivy_InitNotCond( Ivy_Init_t Init, int fCompl )
-{
- assert( Init != IVY_INIT_NONE );
- if ( fCompl == 0 )
- return Init;
- if ( Init == IVY_INIT_0 )
- return IVY_INIT_1;
- if ( Init == IVY_INIT_1 )
- return IVY_INIT_0;
- return IVY_INIT_DC;
-}
-
-// get the initial state after forward retiming over AND gate
-static Ivy_Init_t Ivy_InitAnd( Ivy_Init_t InitA, Ivy_Init_t InitB )
-{
- assert( InitA != IVY_INIT_NONE && InitB != IVY_INIT_NONE );
- if ( InitA == IVY_INIT_0 || InitB == IVY_INIT_0 )
- return IVY_INIT_0;
- if ( InitA == IVY_INIT_DC || InitB == IVY_INIT_DC )
- return IVY_INIT_DC;
- return IVY_INIT_1;
-}
-
-// get the initial state after forward retiming over EXOR gate
-static Ivy_Init_t Ivy_InitExor( Ivy_Init_t InitA, Ivy_Init_t InitB )
-{
- assert( InitA != IVY_INIT_NONE && InitB != IVY_INIT_NONE );
- if ( InitA == IVY_INIT_DC || InitB == IVY_INIT_DC )
- return IVY_INIT_DC;
- if ( InitA == IVY_INIT_0 && InitB == IVY_INIT_1 )
- return IVY_INIT_1;
- if ( InitA == IVY_INIT_1 && InitB == IVY_INIT_0 )
- return IVY_INIT_1;
- return IVY_INIT_0;
-}
-
-// internal memory manager
-static inline Ivy_Obj_t * Ivy_ManFetchMemory( Ivy_Man_t * p )
-{
- extern void Ivy_ManAddMemory( Ivy_Man_t * p );
- Ivy_Obj_t * pTemp;
- if ( p->pListFree == NULL )
- Ivy_ManAddMemory( p );
- pTemp = p->pListFree;
- p->pListFree = *((Ivy_Obj_t **)pTemp);
- memset( pTemp, 0, sizeof(Ivy_Obj_t) );
- return pTemp;
-}
-static inline void Ivy_ManRecycleMemory( Ivy_Man_t * p, Ivy_Obj_t * pEntry )
-{
- pEntry->Type = IVY_NONE; // distinquishes dead node from live node
- *((Ivy_Obj_t **)pEntry) = p->pListFree;
- p->pListFree = pEntry;
-}
-
-
-////////////////////////////////////////////////////////////////////////
-/// ITERATORS ///
-////////////////////////////////////////////////////////////////////////
-
-// iterator over the primary inputs
-#define Ivy_ManForEachPi( p, pObj, i ) \
- Vec_PtrForEachEntry( p->vPis, pObj, i )
-// iterator over the primary outputs
-#define Ivy_ManForEachPo( p, pObj, i ) \
- Vec_PtrForEachEntry( p->vPos, pObj, i )
-// iterator over all objects, including those currently not used
-#define Ivy_ManForEachObj( p, pObj, i ) \
- Vec_PtrForEachEntry( p->vObjs, pObj, i ) if ( (pObj) == NULL ) {} else
-// iterator over the combinational inputs
-#define Ivy_ManForEachCi( p, pObj, i ) \
- Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsCi(pObj) ) {} else
-// iterator over the combinational outputs
-#define Ivy_ManForEachCo( p, pObj, i ) \
- Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsCo(pObj) ) {} else
-// iterator over logic nodes (AND and EXOR gates)
-#define Ivy_ManForEachNode( p, pObj, i ) \
- Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsNode(pObj) ) {} else
-// iterator over logic latches
-#define Ivy_ManForEachLatch( p, pObj, i ) \
- Ivy_ManForEachObj( p, pObj, i ) if ( !Ivy_ObjIsLatch(pObj) ) {} else
-// iterator over the nodes whose IDs are stored in the array
-#define Ivy_ManForEachNodeVec( p, vIds, pObj, i ) \
- for ( i = 0; i < Vec_IntSize(vIds) && ((pObj) = Ivy_ManObj(p, Vec_IntEntry(vIds,i))); i++ )
-// iterator over the fanouts of an object
-#define Ivy_ObjForEachFanout( p, pObj, vArray, pFanout, i ) \
- for ( i = 0, Ivy_ObjCollectFanouts(p, pObj, vArray); \
- i < Vec_PtrSize(vArray) && ((pFanout) = Vec_PtrEntry(vArray,i)); i++ )
-
-////////////////////////////////////////////////////////////////////////
-/// FUNCTION DECLARATIONS ///
-////////////////////////////////////////////////////////////////////////
-
-/*=== ivyBalance.c ========================================================*/
-extern Ivy_Man_t * Ivy_ManBalance( Ivy_Man_t * p, int fUpdateLevel );
-extern Ivy_Obj_t * Ivy_NodeBalanceBuildSuper( Ivy_Man_t * p, Vec_Ptr_t * vSuper, Ivy_Type_t Type, int fUpdateLevel );
-/*=== ivyCanon.c ========================================================*/
-extern Ivy_Obj_t * Ivy_CanonAnd( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t * Ivy_CanonExor( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t * Ivy_CanonLatch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init );
-/*=== ivyCheck.c ========================================================*/
-extern int Ivy_ManCheck( Ivy_Man_t * p );
-extern int Ivy_ManCheckFanoutNums( Ivy_Man_t * p );
-extern int Ivy_ManCheckFanouts( Ivy_Man_t * p );
-extern int Ivy_ManCheckChoices( Ivy_Man_t * p );
-/*=== ivyCut.c ==========================================================*/
-extern void Ivy_ManSeqFindCut( Ivy_Man_t * p, Ivy_Obj_t * pNode, Vec_Int_t * vFront, Vec_Int_t * vInside, int nSize );
-extern Ivy_Store_t * Ivy_NodeFindCutsAll( Ivy_Man_t * p, Ivy_Obj_t * pObj, int nLeaves );
-/*=== ivyDfs.c ==========================================================*/
-extern Vec_Int_t * Ivy_ManDfs( Ivy_Man_t * p );
-extern Vec_Int_t * Ivy_ManDfsSeq( Ivy_Man_t * p, Vec_Int_t ** pvLatches );
-extern void Ivy_ManCollectCone( Ivy_Obj_t * pObj, Vec_Ptr_t * vFront, Vec_Ptr_t * vCone );
-extern Vec_Vec_t * Ivy_ManLevelize( Ivy_Man_t * p );
-extern Vec_Int_t * Ivy_ManRequiredLevels( Ivy_Man_t * p );
-extern int Ivy_ManIsAcyclic( Ivy_Man_t * p );
-extern int Ivy_ManSetLevels( Ivy_Man_t * p, int fHaig );
-/*=== ivyDsd.c ==========================================================*/
-extern int Ivy_TruthDsd( unsigned uTruth, Vec_Int_t * vTree );
-extern void Ivy_TruthDsdPrint( FILE * pFile, Vec_Int_t * vTree );
-extern unsigned Ivy_TruthDsdCompute( Vec_Int_t * vTree );
-extern void Ivy_TruthDsdComputePrint( unsigned uTruth );
-extern Ivy_Obj_t * Ivy_ManDsdConstruct( Ivy_Man_t * p, Vec_Int_t * vFront, Vec_Int_t * vTree );
-/*=== ivyFanout.c ==========================================================*/
-extern void Ivy_ManStartFanout( Ivy_Man_t * p );
-extern void Ivy_ManStopFanout( Ivy_Man_t * p );
-extern void Ivy_ObjAddFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout );
-extern void Ivy_ObjDeleteFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanout );
-extern void Ivy_ObjPatchFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFanoutOld, Ivy_Obj_t * pFanoutNew );
-extern void Ivy_ObjCollectFanouts( Ivy_Man_t * p, Ivy_Obj_t * pObj, Vec_Ptr_t * vArray );
-extern Ivy_Obj_t * Ivy_ObjReadFirstFanout( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern int Ivy_ObjFanoutNum( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-/*=== ivyFastMap.c =============================================================*/
-extern void Ivy_FastMapPerform( Ivy_Man_t * pAig, int nLimit, int fRecovery, int fVerbose );
-extern void Ivy_FastMapStop( Ivy_Man_t * pAig );
-extern void Ivy_FastMapReadSupp( Ivy_Man_t * pAig, Ivy_Obj_t * pObj, Vec_Int_t * vLeaves );
-extern void Ivy_FastMapReverseLevel( Ivy_Man_t * pAig );
-/*=== ivyFraig.c ==========================================================*/
-extern int Ivy_FraigProve( Ivy_Man_t ** ppManAig, void * pPars );
-extern Ivy_Man_t * Ivy_FraigPerform( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-extern Ivy_Man_t * Ivy_FraigMiter( Ivy_Man_t * pManAig, Ivy_FraigParams_t * pParams );
-extern void Ivy_FraigParamsDefault( Ivy_FraigParams_t * pParams );
-/*=== ivyHaig.c ==========================================================*/
-extern void Ivy_ManHaigStart( Ivy_Man_t * p, int fVerbose );
-extern void Ivy_ManHaigTrasfer( Ivy_Man_t * p, Ivy_Man_t * pNew );
-extern void Ivy_ManHaigStop( Ivy_Man_t * p );
-extern void Ivy_ManHaigPostprocess( Ivy_Man_t * p, int fVerbose );
-extern void Ivy_ManHaigCreateObj( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_ManHaigCreateChoice( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew );
-extern void Ivy_ManHaigSimulate( Ivy_Man_t * p );
-/*=== ivyMan.c ==========================================================*/
-extern Ivy_Man_t * Ivy_ManStart();
-extern Ivy_Man_t * Ivy_ManStartFrom( Ivy_Man_t * p );
-extern Ivy_Man_t * Ivy_ManDup( Ivy_Man_t * p );
-extern Ivy_Man_t * Ivy_ManFrames( Ivy_Man_t * pMan, int nLatches, int nFrames, int fInit, Vec_Ptr_t ** pvMapping );
-extern void Ivy_ManStop( Ivy_Man_t * p );
-extern int Ivy_ManCleanup( Ivy_Man_t * p );
-extern int Ivy_ManPropagateBuffers( Ivy_Man_t * p, int fUpdateLevel );
-extern void Ivy_ManPrintStats( Ivy_Man_t * p );
-extern void Ivy_ManMakeSeq( Ivy_Man_t * p, int nLatches, int * pInits );
-/*=== ivyMem.c ==========================================================*/
-extern void Ivy_ManStartMemory( Ivy_Man_t * p );
-extern void Ivy_ManStopMemory( Ivy_Man_t * p );
-/*=== ivyMulti.c ==========================================================*/
-extern Ivy_Obj_t * Ivy_Multi( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern Ivy_Obj_t * Ivy_Multi1( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern Ivy_Obj_t * Ivy_Multi_rec( Ivy_Man_t * p, Ivy_Obj_t ** ppObjs, int nObjs, Ivy_Type_t Type );
-extern Ivy_Obj_t * Ivy_MultiBalance_rec( Ivy_Man_t * p, Ivy_Obj_t ** pArgs, int nArgs, Ivy_Type_t Type );
-extern int Ivy_MultiPlus( Ivy_Man_t * p, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vCone, Ivy_Type_t Type, int nLimit, Vec_Ptr_t * vSol );
-/*=== ivyObj.c ==========================================================*/
-extern Ivy_Obj_t * Ivy_ObjCreatePi( Ivy_Man_t * p );
-extern Ivy_Obj_t * Ivy_ObjCreatePo( Ivy_Man_t * p, Ivy_Obj_t * pDriver );
-extern Ivy_Obj_t * Ivy_ObjCreate( Ivy_Man_t * p, Ivy_Obj_t * pGhost );
-extern void Ivy_ObjConnect( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFan0, Ivy_Obj_t * pFan1 );
-extern void Ivy_ObjDisconnect( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_ObjPatchFanin0( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Obj_t * pFaninNew );
-extern void Ivy_ObjDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop );
-extern void Ivy_ObjDelete_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fFreeTop );
-extern void Ivy_ObjReplace( Ivy_Man_t * p, Ivy_Obj_t * pObjOld, Ivy_Obj_t * pObjNew, int fDeleteOld, int fFreeTop, int fUpdateLevel );
-extern void Ivy_NodeFixBufferFanins( Ivy_Man_t * p, Ivy_Obj_t * pNode, int fUpdateLevel );
-/*=== ivyOper.c =========================================================*/
-extern Ivy_Obj_t * Ivy_Oper( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1, Ivy_Type_t Type );
-extern Ivy_Obj_t * Ivy_And( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t * Ivy_Or( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t * Ivy_Exor( Ivy_Man_t * p, Ivy_Obj_t * p0, Ivy_Obj_t * p1 );
-extern Ivy_Obj_t * Ivy_Mux( Ivy_Man_t * p, Ivy_Obj_t * pC, Ivy_Obj_t * p1, Ivy_Obj_t * p0 );
-extern Ivy_Obj_t * Ivy_Maj( Ivy_Man_t * p, Ivy_Obj_t * pA, Ivy_Obj_t * pB, Ivy_Obj_t * pC );
-extern Ivy_Obj_t * Ivy_Miter( Ivy_Man_t * p, Vec_Ptr_t * vPairs );
-extern Ivy_Obj_t * Ivy_Latch( Ivy_Man_t * p, Ivy_Obj_t * pObj, Ivy_Init_t Init );
-/*=== ivyResyn.c =========================================================*/
-extern Ivy_Man_t * Ivy_ManResyn0( Ivy_Man_t * p, int fUpdateLevel, int fVerbose );
-extern Ivy_Man_t * Ivy_ManResyn( Ivy_Man_t * p, int fUpdateLevel, int fVerbose );
-extern Ivy_Man_t * Ivy_ManRwsat( Ivy_Man_t * pMan, int fVerbose );
-/*=== ivyRewrite.c =========================================================*/
-extern int Ivy_ManSeqRewrite( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost );
-extern int Ivy_ManRewriteAlg( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost );
-extern int Ivy_ManRewritePre( Ivy_Man_t * p, int fUpdateLevel, int fUseZeroCost, int fVerbose );
-/*=== ivySeq.c =========================================================*/
-extern int Ivy_ManRewriteSeq( Ivy_Man_t * p, int fUseZeroCost, int fVerbose );
-/*=== ivyShow.c =========================================================*/
-extern void Ivy_ManShow( Ivy_Man_t * pMan, int fHaig, Vec_Ptr_t * vBold );
-/*=== ivyTable.c ========================================================*/
-extern Ivy_Obj_t * Ivy_TableLookup( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_TableInsert( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_TableDelete( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_TableUpdate( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ObjIdNew );
-extern int Ivy_TableCountEntries( Ivy_Man_t * p );
-extern void Ivy_TableProfile( Ivy_Man_t * p );
-/*=== ivyUtil.c =========================================================*/
-extern void Ivy_ManIncrementTravId( Ivy_Man_t * p );
-extern void Ivy_ManCleanTravId( Ivy_Man_t * p );
-extern unsigned * Ivy_ManCutTruth( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes, Vec_Int_t * vTruth );
-extern void Ivy_ManCollectCut( Ivy_Man_t * p, Ivy_Obj_t * pRoot, Vec_Int_t * vLeaves, Vec_Int_t * vNodes );
-extern Vec_Int_t * Ivy_ManLatches( Ivy_Man_t * p );
-extern int Ivy_ManLevels( Ivy_Man_t * p );
-extern void Ivy_ManResetLevels( Ivy_Man_t * p );
-extern int Ivy_ObjMffcLabel( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_ObjUpdateLevel_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj );
-extern void Ivy_ObjUpdateLevelR_rec( Ivy_Man_t * p, Ivy_Obj_t * pObj, int ReqNew );
-extern int Ivy_ObjIsMuxType( Ivy_Obj_t * pObj );
-extern Ivy_Obj_t * Ivy_ObjRecognizeMux( Ivy_Obj_t * pObj, Ivy_Obj_t ** ppObjT, Ivy_Obj_t ** ppObjE );
-extern Ivy_Obj_t * Ivy_ObjReal( Ivy_Obj_t * pObj );
-extern void Ivy_ObjPrintVerbose( Ivy_Man_t * p, Ivy_Obj_t * pObj, int fHaig );
-extern void Ivy_ManPrintVerbose( Ivy_Man_t * p, int fHaig );
-extern int Ivy_CutTruthPrint( Ivy_Man_t * p, Ivy_Cut_t * pCut, unsigned uTruth );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-////////////////////////////////////////////////////////////////////////
-/// END OF FILE ///
-////////////////////////////////////////////////////////////////////////
-