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author | Alan Mishchenko <alanmi@berkeley.edu> | 2006-07-23 08:01:00 -0700 |
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committer | Alan Mishchenko <alanmi@berkeley.edu> | 2006-07-23 08:01:00 -0700 |
commit | 7e8e03206c56e7cd9d0d9fbb447c785c400ff3ee (patch) | |
tree | 9d31935cf6c27b36c3ceb57cb5cffe2577a569a7 /src/misc/extra/extraUtilTruth.c | |
parent | 616bb095f10c24f1f720efe89b7f39c670d114a3 (diff) | |
download | abc-7e8e03206c56e7cd9d0d9fbb447c785c400ff3ee.tar.gz abc-7e8e03206c56e7cd9d0d9fbb447c785c400ff3ee.tar.bz2 abc-7e8e03206c56e7cd9d0d9fbb447c785c400ff3ee.zip |
Version abc60723
Diffstat (limited to 'src/misc/extra/extraUtilTruth.c')
-rw-r--r-- | src/misc/extra/extraUtilTruth.c | 112 |
1 files changed, 111 insertions, 1 deletions
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; |