diff options
Diffstat (limited to 'src/sat/fraig/fraigTable.c')
| -rw-r--r-- | src/sat/fraig/fraigTable.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/src/sat/fraig/fraigTable.c b/src/sat/fraig/fraigTable.c index 4dc6afdc..7a8af749 100644 --- a/src/sat/fraig/fraigTable.c +++ b/src/sat/fraig/fraigTable.c @@ -382,28 +382,52 @@ int Fraig_CompareSimInfo( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWor SeeAlso [] ***********************************************************************/ -int Fraig_FindFirstDiff( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand ) +int Fraig_FindFirstDiff( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int fCompl, int iWordLast, int fUseRand ) { int i, v; assert( !Fraig_IsComplement(pNode1) ); assert( !Fraig_IsComplement(pNode2) ); - if ( fUseRand ) + // take into account possible internal complementation + fCompl ^= pNode1->fInv; + fCompl ^= pNode2->fInv; + // find the pattern + if ( fCompl ) { - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimR[i] != pNode2->puSimR[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimR[i] ^ pNode2->puSimR[i]) & (1 << v) ) - return i * 32 + v; + if ( fUseRand ) + { + for ( i = 0; i < iWordLast; i++ ) + if ( pNode1->puSimR[i] != ~pNode2->puSimR[i] ) + for ( v = 0; v < 32; v++ ) + if ( (pNode1->puSimR[i] ^ ~pNode2->puSimR[i]) & (1 << v) ) + return i * 32 + v; + } + else + { + for ( i = 0; i < iWordLast; i++ ) + if ( pNode1->puSimD[i] != ~pNode2->puSimD[i] ) + for ( v = 0; v < 32; v++ ) + if ( (pNode1->puSimD[i] ^ ~pNode2->puSimD[i]) & (1 << v) ) + return i * 32 + v; + } } else { - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimD[i] != pNode2->puSimD[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimD[i] ^ pNode2->puSimD[i]) & (1 << v) ) - return i * 32 + v; + if ( fUseRand ) + { + for ( i = 0; i < iWordLast; i++ ) + if ( pNode1->puSimR[i] != pNode2->puSimR[i] ) + for ( v = 0; v < 32; v++ ) + if ( (pNode1->puSimR[i] ^ pNode2->puSimR[i]) & (1 << v) ) + return i * 32 + v; + } + else + { + for ( i = 0; i < iWordLast; i++ ) + if ( pNode1->puSimD[i] != pNode2->puSimD[i] ) + for ( v = 0; v < 32; v++ ) + if ( (pNode1->puSimD[i] ^ pNode2->puSimD[i]) & (1 << v) ) + return i * 32 + v; + } } return -1; } |