diff options
| -rw-r--r-- | src/map/if/ifDec16.c | 25 | ||||
| -rw-r--r-- | src/map/if/ifMap.c | 8 |
2 files changed, 29 insertions, 4 deletions
diff --git a/src/map/if/ifDec16.c b/src/map/if/ifDec16.c index 372473a7..ce59a946 100644 --- a/src/map/if/ifDec16.c +++ b/src/map/if/ifDec16.c @@ -1760,6 +1760,31 @@ static inline word Abc_Tt6Cofactor1( word t, int iVar ) assert( iVar >= 0 && iVar < 6 ); return (t & Truth6[iVar]) | ((t & Truth6[iVar]) >> (1<<iVar)); } +int If_CluCheckDecInAny( word t, int nVars ) +{ + int v, u, Cof2[2], Cof4[4]; + for ( v = 0; v < nVars; v++ ) + { + Cof2[0] = Abc_Tt6Cofactor0( t, v ); + Cof2[1] = Abc_Tt6Cofactor1( t, v ); + for ( u = v+1; u < nVars; u++ ) + { + Cof4[0] = Abc_Tt6Cofactor0( Cof2[0], u ); + Cof4[1] = Abc_Tt6Cofactor1( Cof2[0], u ); + Cof4[2] = Abc_Tt6Cofactor0( Cof2[1], u ); + Cof4[3] = Abc_Tt6Cofactor1( Cof2[1], u ); + if ( Cof4[0] == Cof4[1] && Cof4[0] == Cof4[2] ) + return 1; + if ( Cof4[0] == Cof4[2] && Cof4[0] == Cof4[3] ) + return 1; + if ( Cof4[0] == Cof4[1] && Cof4[0] == Cof4[3] ) + return 1; + if ( Cof4[1] == Cof4[2] && Cof4[1] == Cof4[3] ) + return 1; + } + } + return 0; +} int If_CluCheckDecIn( word t, int nVars ) { int v, u, Cof2[2], Cof4[4]; diff --git a/src/map/if/ifMap.c b/src/map/if/ifMap.c index 5ac85807..85efe18e 100644 --- a/src/map/if/ifMap.c +++ b/src/map/if/ifMap.c @@ -276,24 +276,24 @@ void If_ObjPerformMappingAnd( If_Man_t * p, If_Obj_t * pObj, int Mode, int fPrep // skip 5-input cuts, which cannot be decomposed if ( (p->pPars->fEnableCheck75 || p->pPars->fEnableCheck75u) && pCut->nLeaves == 5 && pCut->nLimit == 5 ) { - extern int If_CluCheckDecIn( word t, int nVars ); + extern int If_CluCheckDecInAny( word t, int nVars ); extern int If_CluCheckDecOut( word t, int nVars ); unsigned TruthU = *If_CutTruth(pCut); word Truth = (((word)TruthU << 32) | (word)TruthU); p->nCuts5++; - if ( If_CluCheckDecIn( Truth, 5 ) || If_CluCheckDecOut( Truth, 5 ) ) + if ( If_CluCheckDecInAny( Truth, 5 ) ) p->nCuts5a++; else continue; } else if ( p->pPars->fVerbose && pCut->nLeaves == 5 ) { - extern int If_CluCheckDecIn( word t, int nVars ); + extern int If_CluCheckDecInAny( word t, int nVars ); extern int If_CluCheckDecOut( word t, int nVars ); unsigned TruthU = *If_CutTruth(pCut); word Truth = (((word)TruthU << 32) | (word)TruthU); p->nCuts5++; - if ( If_CluCheckDecIn( Truth, 5 ) || If_CluCheckDecOut( Truth, 5 ) ) + if ( If_CluCheckDecInAny( Truth, 5 ) || If_CluCheckDecOut( Truth, 5 ) ) p->nCuts5a++; } } |