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Diffstat (limited to 'src/temp/aig/aigOper.c')
| -rw-r--r-- | src/temp/aig/aigOper.c | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/src/temp/aig/aigOper.c b/src/temp/aig/aigOper.c deleted file mode 100644 index 9985093e..00000000 --- a/src/temp/aig/aigOper.c +++ /dev/null @@ -1,373 +0,0 @@ -/**CFile**************************************************************** - - FileName [aigOper.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Minimalistic And-Inverter Graph package.] - - Synopsis [AIG operations.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - May 11, 2006.] - - Revision [$Id: aigOper.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "aig.h" - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -// procedure to detect an EXOR gate -static inline int Aig_ObjIsExorType( Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Obj_t ** ppFan0, Aig_Obj_t ** ppFan1 ) -{ - if ( !Aig_IsComplement(p0) || !Aig_IsComplement(p1) ) - return 0; - p0 = Aig_Regular(p0); - p1 = Aig_Regular(p1); - if ( !Aig_ObjIsAnd(p0) || !Aig_ObjIsAnd(p1) ) - return 0; - if ( Aig_ObjFanin0(p0) != Aig_ObjFanin0(p1) || Aig_ObjFanin1(p0) != Aig_ObjFanin1(p1) ) - return 0; - if ( Aig_ObjFaninC0(p0) == Aig_ObjFaninC0(p1) || Aig_ObjFaninC1(p0) == Aig_ObjFaninC1(p1) ) - return 0; - *ppFan0 = Aig_ObjChild0(p0); - *ppFan1 = Aig_ObjChild1(p0); - return 1; -} - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Returns i-th elementary variable.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_IthVar( Aig_Man_t * p, int i ) -{ - int v; - for ( v = Aig_ManPiNum(p); v <= i; v++ ) - Aig_ObjCreatePi( p ); - assert( i < Vec_PtrSize(p->vPis) ); - return Aig_ManPi( p, i ); -} - -/**Function************************************************************* - - Synopsis [Perform one operation.] - - Description [The argument nodes can be complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Oper( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1, Aig_Type_t Type ) -{ - if ( Type == AIG_AND ) - return Aig_And( p, p0, p1 ); - if ( Type == AIG_EXOR ) - return Aig_Exor( p, p0, p1 ); - assert( 0 ); - return NULL; -} - -/**Function************************************************************* - - Synopsis [Performs canonicization step.] - - Description [The argument nodes can be complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_And( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 ) -{ - Aig_Obj_t * pGhost, * pResult; -// Aig_Obj_t * pFan0, * pFan1; - // check trivial cases - if ( p0 == p1 ) - return p0; - if ( p0 == Aig_Not(p1) ) - return Aig_Not(p->pConst1); - if ( Aig_Regular(p0) == p->pConst1 ) - return p0 == p->pConst1 ? p1 : Aig_Not(p->pConst1); - if ( Aig_Regular(p1) == p->pConst1 ) - return p1 == p->pConst1 ? p0 : Aig_Not(p->pConst1); - // check if it can be an EXOR gate -// if ( Aig_ObjIsExorType( p0, p1, &pFan0, &pFan1 ) ) -// return Aig_Exor( p, pFan0, pFan1 ); - // check the table - pGhost = Aig_ObjCreateGhost( p, p0, p1, AIG_AND ); - if ( pResult = Aig_TableLookup( p, pGhost ) ) - return pResult; - return Aig_ObjCreate( p, pGhost ); -} - -/**Function************************************************************* - - Synopsis [Performs canonicization step.] - - Description [The argument nodes can be complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Exor( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 ) -{ -/* - Aig_Obj_t * pGhost, * pResult; - // check trivial cases - if ( p0 == p1 ) - return Aig_Not(p->pConst1); - if ( p0 == Aig_Not(p1) ) - return p->pConst1; - if ( Aig_Regular(p0) == p->pConst1 ) - return Aig_NotCond( p1, p0 == p->pConst1 ); - if ( Aig_Regular(p1) == p->pConst1 ) - return Aig_NotCond( p0, p1 == p->pConst1 ); - // check the table - pGhost = Aig_ObjCreateGhost( p, p0, p1, AIG_EXOR ); - if ( pResult = Aig_TableLookup( p, pGhost ) ) - return pResult; - return Aig_ObjCreate( p, pGhost ); -*/ - return Aig_Or( p, Aig_And(p, p0, Aig_Not(p1)), Aig_And(p, Aig_Not(p0), p1) ); -} - -/**Function************************************************************* - - Synopsis [Implements Boolean OR.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Or( Aig_Man_t * p, Aig_Obj_t * p0, Aig_Obj_t * p1 ) -{ - return Aig_Not( Aig_And( p, Aig_Not(p0), Aig_Not(p1) ) ); -} - -/**Function************************************************************* - - Synopsis [Implements ITE operation.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Mux( Aig_Man_t * p, Aig_Obj_t * pC, Aig_Obj_t * p1, Aig_Obj_t * p0 ) -{ -/* - Aig_Obj_t * pTempA1, * pTempA2, * pTempB1, * pTempB2, * pTemp; - int Count0, Count1; - // consider trivial cases - if ( p0 == Aig_Not(p1) ) - return Aig_Exor( p, pC, p0 ); - // other cases can be added - // implement the first MUX (F = C * x1 + C' * x0) - - // check for constants here!!! - - pTempA1 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, pC, p1, AIG_AND) ); - pTempA2 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pC), p0, AIG_AND) ); - if ( pTempA1 && pTempA2 ) - { - pTemp = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pTempA1), Aig_Not(pTempA2), AIG_AND) ); - if ( pTemp ) return Aig_Not(pTemp); - } - Count0 = (pTempA1 != NULL) + (pTempA2 != NULL); - // implement the second MUX (F' = C * x1' + C' * x0') - pTempB1 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, pC, Aig_Not(p1), AIG_AND) ); - pTempB2 = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pC), Aig_Not(p0), AIG_AND) ); - if ( pTempB1 && pTempB2 ) - { - pTemp = Aig_TableLookup( p, Aig_ObjCreateGhost(p, Aig_Not(pTempB1), Aig_Not(pTempB2), AIG_AND) ); - if ( pTemp ) return pTemp; - } - Count1 = (pTempB1 != NULL) + (pTempB2 != NULL); - // compare and decide which one to implement - if ( Count0 >= Count1 ) - { - pTempA1 = pTempA1? pTempA1 : Aig_And(p, pC, p1); - pTempA2 = pTempA2? pTempA2 : Aig_And(p, Aig_Not(pC), p0); - return Aig_Or( p, pTempA1, pTempA2 ); - } - pTempB1 = pTempB1? pTempB1 : Aig_And(p, pC, Aig_Not(p1)); - pTempB2 = pTempB2? pTempB2 : Aig_And(p, Aig_Not(pC), Aig_Not(p0)); - return Aig_Not( Aig_Or( p, pTempB1, pTempB2 ) ); -*/ - return Aig_Or( p, Aig_And(p, pC, p1), Aig_And(p, Aig_Not(pC), p0) ); -} - -/**Function************************************************************* - - Synopsis [Implements ITE operation.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Maj( Aig_Man_t * p, Aig_Obj_t * pA, Aig_Obj_t * pB, Aig_Obj_t * pC ) -{ - return Aig_Or( p, Aig_Or(p, Aig_And(p, pA, pB), Aig_And(p, pA, pC)), Aig_And(p, pB, pC) ); -} - -/**Function************************************************************* - - Synopsis [Constructs the well-balanced tree of gates.] - - Description [Disregards levels and possible logic sharing.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Multi_rec( Aig_Man_t * p, Aig_Obj_t ** ppObjs, int nObjs, Aig_Type_t Type ) -{ - Aig_Obj_t * pObj1, * pObj2; - if ( nObjs == 1 ) - return ppObjs[0]; - pObj1 = Aig_Multi_rec( p, ppObjs, nObjs/2, Type ); - pObj2 = Aig_Multi_rec( p, ppObjs + nObjs/2, nObjs - nObjs/2, Type ); - return Aig_Oper( p, pObj1, pObj2, Type ); -} - -/**Function************************************************************* - - Synopsis [Old code.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Multi( Aig_Man_t * p, Aig_Obj_t ** pArgs, int nArgs, Aig_Type_t Type ) -{ - assert( Type == AIG_AND || Type == AIG_EXOR ); - assert( nArgs > 0 ); - return Aig_Multi_rec( p, pArgs, nArgs, Type ); -} - -/**Function************************************************************* - - Synopsis [Implements the miter.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_Miter( Aig_Man_t * p, Vec_Ptr_t * vPairs ) -{ - int i; - assert( vPairs->nSize > 0 ); - assert( vPairs->nSize % 2 == 0 ); - // go through the cubes of the node's SOP - for ( i = 0; i < vPairs->nSize; i += 2 ) - vPairs->pArray[i/2] = Aig_Not( Aig_Exor( p, vPairs->pArray[i], vPairs->pArray[i+1] ) ); - vPairs->nSize = vPairs->nSize/2; - return Aig_Not( Aig_Multi_rec( p, (Aig_Obj_t **)vPairs->pArray, vPairs->nSize, AIG_AND ) ); -} - -/**Function************************************************************* - - Synopsis [Creates AND function with nVars inputs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_CreateAnd( Aig_Man_t * p, int nVars ) -{ - Aig_Obj_t * pFunc; - int i; - pFunc = Aig_ManConst1( p ); - for ( i = 0; i < nVars; i++ ) - pFunc = Aig_And( p, pFunc, Aig_IthVar(p, i) ); - return pFunc; -} - -/**Function************************************************************* - - Synopsis [Creates AND function with nVars inputs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_CreateOr( Aig_Man_t * p, int nVars ) -{ - Aig_Obj_t * pFunc; - int i; - pFunc = Aig_ManConst0( p ); - for ( i = 0; i < nVars; i++ ) - pFunc = Aig_Or( p, pFunc, Aig_IthVar(p, i) ); - return pFunc; -} - -/**Function************************************************************* - - Synopsis [Creates AND function with nVars inputs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Obj_t * Aig_CreateExor( Aig_Man_t * p, int nVars ) -{ - Aig_Obj_t * pFunc; - int i; - pFunc = Aig_ManConst0( p ); - for ( i = 0; i < nVars; i++ ) - pFunc = Aig_Exor( p, pFunc, Aig_IthVar(p, i) ); - return pFunc; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - |