diff options
Diffstat (limited to 'src/misc/extra')
| -rw-r--r-- | src/misc/extra/extra.h | 12 | ||||
| -rw-r--r-- | src/misc/extra/extraUtilTruth.c | 112 |
2 files changed, 122 insertions, 2 deletions
diff --git a/src/misc/extra/extra.h b/src/misc/extra/extra.h index 9f3b4cc7..bdbc3d89 100644 --- a/src/misc/extra/extra.h +++ b/src/misc/extra/extra.h @@ -433,6 +433,14 @@ static inline int Extra_TruthIsConst1( unsigned * pIn, int nVars ) return 0; return 1; } +static inline int Extra_TruthIsImply( unsigned * pIn1, unsigned * pIn2, int nVars ) +{ + int w; + for ( w = Extra_TruthWordNum(nVars)-1; w >= 0; w-- ) + if ( pIn1[w] & ~pIn2[w] ) + return 0; + return 1; +} static inline void Extra_TruthCopy( unsigned * pOut, unsigned * pIn, int nVars ) { int w; @@ -491,7 +499,9 @@ extern int Extra_TruthSupportSize( unsigned * pTruth, int nVars ); extern int Extra_TruthSupport( unsigned * pTruth, int nVars ); extern void Extra_TruthCofactor0( unsigned * pTruth, int nVars, int iVar ); extern void Extra_TruthCofactor1( unsigned * pTruth, int nVars, int iVar ); -extern void Extra_TruthCombine( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar ); +extern void Extra_TruthExist( unsigned * pTruth, int nVars, int iVar ); +extern void Extra_TruthForall( unsigned * pTruth, int nVars, int iVar ); +extern void Extra_TruthMux( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar ); extern void Extra_TruthChangePhase( unsigned * pTruth, int nVars, int iVar ); extern int Extra_TruthMinCofSuppOverlap( unsigned * pTruth, int nVars, int * pVarMin ); extern int Extra_TruthCountOnes( unsigned * pTruth, int nVars ); diff --git a/src/misc/extra/extraUtilTruth.c b/src/misc/extra/extraUtilTruth.c index a80c0d3d..83153863 100644 --- a/src/misc/extra/extraUtilTruth.c +++ b/src/misc/extra/extraUtilTruth.c @@ -506,6 +506,116 @@ void Extra_TruthCofactor0( unsigned * pTruth, int nVars, int iVar ) } } + +/**Function************************************************************* + + Synopsis [Existentially quantifies the variable.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Extra_TruthExist( unsigned * pTruth, int nVars, int iVar ) +{ + int nWords = Extra_TruthWordNum( nVars ); + int i, k, Step; + + assert( iVar < nVars ); + switch ( iVar ) + { + case 0: + for ( i = 0; i < nWords; i++ ) + pTruth[i] |= ((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1); + return; + case 1: + for ( i = 0; i < nWords; i++ ) + pTruth[i] |= ((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2); + return; + case 2: + for ( i = 0; i < nWords; i++ ) + pTruth[i] |= ((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4); + return; + case 3: + for ( i = 0; i < nWords; i++ ) + pTruth[i] |= ((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8); + return; + case 4: + for ( i = 0; i < nWords; i++ ) + pTruth[i] |= ((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16); + return; + default: + Step = (1 << (iVar - 5)); + for ( k = 0; k < nWords; k += 2*Step ) + { + for ( i = 0; i < Step; i++ ) + { + pTruth[i] |= pTruth[Step+i]; + pTruth[Step+i] = pTruth[i]; + } + pTruth += 2*Step; + } + return; + } +} + +/**Function************************************************************* + + Synopsis [Existentially quantifies the variable.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Extra_TruthForall( unsigned * pTruth, int nVars, int iVar ) +{ + int nWords = Extra_TruthWordNum( nVars ); + int i, k, Step; + + assert( iVar < nVars ); + switch ( iVar ) + { + case 0: + for ( i = 0; i < nWords; i++ ) + pTruth[i] &= ((pTruth[i] & 0xAAAAAAAA) >> 1) | ((pTruth[i] & 0x55555555) << 1); + return; + case 1: + for ( i = 0; i < nWords; i++ ) + pTruth[i] &= ((pTruth[i] & 0xCCCCCCCC) >> 2) | ((pTruth[i] & 0x33333333) << 2); + return; + case 2: + for ( i = 0; i < nWords; i++ ) + pTruth[i] &= ((pTruth[i] & 0xF0F0F0F0) >> 4) | ((pTruth[i] & 0x0F0F0F0F) << 4); + return; + case 3: + for ( i = 0; i < nWords; i++ ) + pTruth[i] &= ((pTruth[i] & 0xFF00FF00) >> 8) | ((pTruth[i] & 0x00FF00FF) << 8); + return; + case 4: + for ( i = 0; i < nWords; i++ ) + pTruth[i] &= ((pTruth[i] & 0xFFFF0000) >> 16) | ((pTruth[i] & 0x0000FFFF) << 16); + return; + default: + Step = (1 << (iVar - 5)); + for ( k = 0; k < nWords; k += 2*Step ) + { + for ( i = 0; i < Step; i++ ) + { + pTruth[i] &= pTruth[Step+i]; + pTruth[Step+i] = pTruth[i]; + } + pTruth += 2*Step; + } + return; + } +} + + /**Function************************************************************* Synopsis [Computes negative cofactor of the function.] @@ -517,7 +627,7 @@ void Extra_TruthCofactor0( unsigned * pTruth, int nVars, int iVar ) SeeAlso [] ***********************************************************************/ -void Extra_TruthCombine( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar ) +void Extra_TruthMux( unsigned * pOut, unsigned * pCof0, unsigned * pCof1, int nVars, int iVar ) { int nWords = Extra_TruthWordNum( nVars ); int i, k, Step; |