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Saturating floating point computation.

This commit is contained in:
Alan Mishchenko 2017-06-29 17:58:43 -07:00
parent 96c5b56245
commit a1dd7e3fb0
1 changed files with 10 additions and 4 deletions
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14
src/map/amap/amapMatch.c
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@ -387,6 +387,7 @@ static inline void Amap_ManMatchGetFlows( Amap_Man_t * p, Amap_Mat_t * pM )
Amap_Mat_t * pMFanin;
Amap_Obj_t * pFanin;
Amap_Gat_t * pGate;
float AddOn;
int i;
pGate = Amap_LibGate( p->pLib, pM->pSet->iGate );
assert( pGate->nPins == pM->pCut->nFans );
@ -399,10 +400,15 @@ static inline void Amap_ManMatchGetFlows( Amap_Man_t * p, Amap_Mat_t * pM )
pMFanin = &pFanin->Best;
pM->Delay = Abc_MaxInt( pM->Delay, pMFanin->Delay );
pM->AveFan += Amap_ObjRefsTotal(pFanin);
if ( Amap_ObjRefsTotal(pFanin) == 0 )
pM->Area += pMFanin->Area;
else
pM->Area += pMFanin->Area / pFanin->EstRefs;
// if ( Amap_ObjRefsTotal(pFanin) == 0 )
// pM->Area += pMFanin->Area;
// else
// pM->Area += pMFanin->Area / pFanin->EstRefs;
AddOn = Amap_ObjRefsTotal(pFanin) == 0 ? pMFanin->Area : pMFanin->Area / pFanin->EstRefs;
if ( pM->Area >= (float)1e32 || AddOn >= (float)1e32 )
pM->Area = (float)1e32;
else
pM->Area += AddOn;
}
pM->AveFan /= pGate->nPins;
pM->Delay += 1.0;