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Diffstat (limited to 'src/temp/aig/aigUtil.c')
| -rw-r--r-- | src/temp/aig/aigUtil.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/temp/aig/aigUtil.c b/src/temp/aig/aigUtil.c index eb93cba1..99966e7d 100644 --- a/src/temp/aig/aigUtil.c +++ b/src/temp/aig/aigUtil.c @@ -73,6 +73,46 @@ void Aig_ManCleanData( Aig_Man_t * p ) /**Function************************************************************* + Synopsis [Detects multi-input gate rooted at this node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Aig_ObjCollectMulti_rec( Aig_Obj_t * pRoot, Aig_Obj_t * pObj, Vec_Ptr_t * vSuper ) +{ + if ( pRoot != pObj && (Aig_IsComplement(pObj) || Aig_ObjIsPi(pObj) || Aig_ObjType(pRoot) != Aig_ObjType(pObj)) ) + { + Vec_PtrPushUnique(vSuper, pObj); + return; + } + Aig_ObjCollectMulti_rec( pRoot, Aig_ObjChild0(pObj), vSuper ); + Aig_ObjCollectMulti_rec( pRoot, Aig_ObjChild1(pObj), vSuper ); +} + +/**Function************************************************************* + + Synopsis [Detects multi-input gate rooted at this node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Aig_ObjCollectMulti( Aig_Obj_t * pRoot, Vec_Ptr_t * vSuper ) +{ + assert( !Aig_IsComplement(pRoot) ); + Vec_PtrClear( vSuper ); + Aig_ObjCollectMulti_rec( pRoot, pRoot, vSuper ); +} + +/**Function************************************************************* + Synopsis [Returns 1 if the node is the root of MUX or EXOR/NEXOR.] Description [] @@ -106,6 +146,48 @@ int Aig_ObjIsMuxType( Aig_Obj_t * pNode ) (Aig_ObjFanin1(pNode0) == Aig_ObjFanin1(pNode1) && (Aig_ObjFaninC1(pNode0) ^ Aig_ObjFaninC1(pNode1))); } + +/**Function************************************************************* + + Synopsis [Recognizes what nodes are inputs of the EXOR.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Aig_ObjRecognizeExor( Aig_Obj_t * pObj, Aig_Obj_t ** ppFan0, Aig_Obj_t ** ppFan1 ) +{ + Aig_Obj_t * p0, * p1; + assert( !Aig_IsComplement(pObj) ); + if ( !Aig_ObjIsNode(pObj) ) + return 0; + if ( Aig_ObjIsExor(pObj) ) + { + *ppFan0 = Aig_ObjChild0(pObj); + *ppFan1 = Aig_ObjChild1(pObj); + return 1; + } + assert( Aig_ObjIsAnd(pObj) ); + p0 = Aig_ObjChild0(pObj); + p1 = Aig_ObjChild1(pObj); + 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************************************************************* Synopsis [Recognizes what nodes are control and data inputs of a MUX.] @@ -198,6 +280,95 @@ Aig_Obj_t * Aig_ObjRecognizeMux( Aig_Obj_t * pNode, Aig_Obj_t ** ppNodeT, Aig_Ob return NULL; } + +/**Function************************************************************* + + Synopsis [Prints Verilog formula for the AIG rooted at this node.] + + Description [The formula is in terms of PIs, which should have + their names assigned in pObj->pData fields.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Aig_ObjPrintVerilog( FILE * pFile, Aig_Obj_t * pObj, Vec_Vec_t * vLevels, int Level ) +{ + Vec_Ptr_t * vSuper; + Aig_Obj_t * pFanin, * pFanin0, * pFanin1, * pFaninC; + int fCompl, i; + // store the complemented attribute + fCompl = Aig_IsComplement(pObj); + pObj = Aig_Regular(pObj); + // constant case + if ( Aig_ObjIsConst1(pObj) ) + { + fprintf( pFile, "%d", !fCompl ); + return; + } + // PI case + if ( Aig_ObjIsPi(pObj) ) + { + fprintf( pFile, "%s%s", fCompl? "~" : "", pObj->pData ); + return; + } + // EXOR case + if ( Aig_ObjIsExor(pObj) ) + { + Vec_VecExpand( vLevels, Level ); + vSuper = Vec_VecEntry( vLevels, Level ); + Aig_ObjCollectMulti( pObj, vSuper ); + fprintf( pFile, "%s", (Level==0? "" : "(") ); + Vec_PtrForEachEntry( vSuper, pFanin, i ) + { + Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin, (fCompl && i==0)), vLevels, Level+1 ); + if ( i < Vec_PtrSize(vSuper) - 1 ) + fprintf( pFile, " ^ " ); + } + fprintf( pFile, "%s", (Level==0? "" : ")") ); + return; + } + // MUX case + if ( Aig_ObjIsMuxType(pObj) ) + { + if ( Aig_ObjRecognizeExor( pObj, &pFanin0, &pFanin1 ) ) + { + fprintf( pFile, "%s", (Level==0? "" : "(") ); + Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin0, fCompl), vLevels, Level+1 ); + fprintf( pFile, " ^ " ); + Aig_ObjPrintVerilog( pFile, pFanin1, vLevels, Level+1 ); + fprintf( pFile, "%s", (Level==0? "" : ")") ); + } + else + { + pFaninC = Aig_ObjRecognizeMux( pObj, &pFanin1, &pFanin0 ); + fprintf( pFile, "%s", (Level==0? "" : "(") ); + Aig_ObjPrintVerilog( pFile, pFaninC, vLevels, Level+1 ); + fprintf( pFile, " ? " ); + Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin1, fCompl), vLevels, Level+1 ); + fprintf( pFile, " : " ); + Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin0, fCompl), vLevels, Level+1 ); + fprintf( pFile, "%s", (Level==0? "" : ")") ); + } + return; + } + // AND case + Vec_VecExpand( vLevels, Level ); + vSuper = Vec_VecEntry(vLevels, Level); + Aig_ObjCollectMulti( pObj, vSuper ); + fprintf( pFile, "%s", (Level==0? "" : "(") ); + Vec_PtrForEachEntry( vSuper, pFanin, i ) + { + Aig_ObjPrintVerilog( pFile, Aig_NotCond(pFanin, fCompl), vLevels, Level+1 ); + if ( i < Vec_PtrSize(vSuper) - 1 ) + fprintf( pFile, " %s ", fCompl? "|" : "&" ); + } + fprintf( pFile, "%s", (Level==0? "" : ")") ); + return; +} + + /**Function************************************************************* Synopsis [Prints node in HAIG.] @@ -250,6 +421,8 @@ void Aig_ManPrintVerbose( Aig_Man_t * p, int fHaig ) printf( "\n" ); } + + //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// |