luke
/
abc
mirror of https://github.com/YosysHQ/abc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Suspected bug fix in exact NPN classification (undoing this change as useless).

This commit is contained in:
Alan Mishchenko 2018-09-10 18:23:59 +03:00
parent a628fb3015
commit 68524cc19c
1 changed files with 8 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/opt/dau/dauCanon.c
View File

@ -1220,7 +1220,7 @@ int Abc_TtHieRetrieveOrInsert(Abc_TtHieMan_t * p, int level, word * pTruth, word
return 0;
}
unsigned Abc_TtCanonicizeHie_int( Abc_TtHieMan_t * p, word * pTruthInit, int nVars, char * pCanonPerm, int fExact )
unsigned Abc_TtCanonicizeHie( Abc_TtHieMan_t * p, word * pTruthInit, int nVars, char * pCanonPerm, int fExact )
{
int fNaive = 1;
int pStore[17];
@ -1230,6 +1230,13 @@ unsigned Abc_TtCanonicizeHie_int( Abc_TtHieMan_t * p, word * pTruthInit, int nVa
int i, k;
assert( nVars <= 16 );
// handle constant
if ( nVars == 0 )
{
Abc_TtClear( pTruthInit, nWords );
return 0;
}
Abc_TtCopy( pTruth, pTruthInit, nWords, 0 );
for ( i = 0; i < nVars; i++ )
@ -1347,37 +1354,6 @@ unsigned Abc_TtCanonicizeHie_int( Abc_TtHieMan_t * p, word * pTruthInit, int nVa
return 0;
}
unsigned Abc_TtCanonicizeHie( Abc_TtHieMan_t * p, word * pTruthInit, int nVars, char * pCanonPerm, int fExact )
{
int nOnes, nWords = Abc_TtWordNum( nVars );
static word pTruth0[1024], pTruth1[1024];
// handle constant
if ( nVars == 0 )
{
Abc_TtClear( pTruthInit, nWords );
return 0;
}
if ( !fExact )
return Abc_TtCanonicizeHie_int(p, pTruthInit, nVars, pCanonPerm, fExact );
// normalize polarity
nOnes = Abc_TtCountOnesInTruth( pTruthInit, nVars );
if ( nOnes != nWords * 32 )
return Abc_TtCanonicizeHie_int(p, pTruthInit, nVars, pCanonPerm, fExact );
Abc_TtCopy( pTruth0, pTruthInit, nWords, 0 );
Abc_TtCopy( pTruth1, pTruthInit, nWords, 0 );
Abc_TtNot( pTruth0, nWords );
Abc_TtCanonicizeHie_int(p, pTruth0, nVars, pCanonPerm, fExact );
Abc_TtCanonicizeHie_int(p, pTruth1, nVars, pCanonPerm, fExact );
if ( memcmp(pTruth0, pTruth1, sizeof(word)*nWords) < 0 )
Abc_TtCopy( pTruthInit, pTruth0, nWords, 0 );
else
Abc_TtCopy( pTruthInit, pTruth1, nWords, 0 );
return 0;
}
/**Function*************************************************************