diff options
Diffstat (limited to 'src/base/abci/abcMap.c')
| -rw-r--r-- | src/base/abci/abcMap.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/base/abci/abcMap.c b/src/base/abci/abcMap.c index c9d743eb..fb8c87ed 100644 --- a/src/base/abci/abcMap.c +++ b/src/base/abci/abcMap.c @@ -682,6 +682,35 @@ Abc_Obj_t * Abc_NodeFromMapSuperChoice_rec( Abc_Ntk_t * pNtkNew, Map_Super_t * p return pNodeNew; } +/**Function************************************************************* + + Synopsis [Returns the twin node if it exists.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NtkFetchTwinNode( Abc_Obj_t * pNode ) +{ + Abc_Obj_t * pNode2; + Mio_Gate_t * pGate = (Mio_Gate_t *)pNode->pData; + assert( Abc_NtkHasMapping(pNode->pNtk) ); + if ( pGate == NULL || Mio_GateReadTwin(pGate) == NULL ) + return NULL; + // assuming the twin node is following next + if ( (int)Abc_ObjId(pNode) == Abc_NtkObjNumMax(pNode->pNtk) - 1 ) + return NULL; + pNode2 = Abc_NtkObj( pNode->pNtk, Abc_ObjId(pNode) + 1 ); + if ( pNode2 == NULL || !Abc_ObjIsNode(pNode2) || Abc_ObjFaninNum(pNode) != Abc_ObjFaninNum(pNode2) ) + return NULL; + if ( Mio_GateReadTwin(pGate) != (Mio_Gate_t *)pNode2->pData ) + return NULL; + return pNode2; +} + //////////////////////////////////////////////////////////////////////// /// END OF FILE /// |