From e4d58876714197bc3597846bf3224c0cdf8b1c66 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Wed, 8 Oct 2014 10:41:20 -0700
Subject: Detection of threshold functions.

---
 src/map/if/if.h    |  1 +
 src/map/if/ifDsd.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)

(limited to 'src/map')

diff --git a/src/map/if/if.h b/src/map/if/if.h
index 909a54ce..d77ac536 100644
--- a/src/map/if/if.h
+++ b/src/map/if/if.h
@@ -550,6 +550,7 @@ extern If_DsdMan_t *   If_DsdManLoad( char * pFileName );
 extern void            If_DsdManMerge( If_DsdMan_t * p, If_DsdMan_t * pNew );
 extern void            If_DsdManCleanOccur( If_DsdMan_t * p, int fVerbose );
 extern void            If_DsdManCleanMarks( If_DsdMan_t * p, int fVerbose );
+extern void            If_DsdManInvertMarks( If_DsdMan_t * p, int fVerbose );
 extern If_DsdMan_t *   If_DsdManFilter( If_DsdMan_t * p, int Limit );
 extern int             If_DsdManCompute( If_DsdMan_t * p, word * pTruth, int nLeaves, unsigned char * pPerm, char * pLutStruct );
 extern char *          If_DsdManFileName( If_DsdMan_t * p );
diff --git a/src/map/if/ifDsd.c b/src/map/if/ifDsd.c
index 90e30287..cfccc362 100644
--- a/src/map/if/ifDsd.c
+++ b/src/map/if/ifDsd.c
@@ -1230,6 +1230,15 @@ void If_DsdManCleanMarks( If_DsdMan_t * p, int fVerbose )
     If_DsdVecForEachObj( &p->vObjs, pObj, i )
         pObj->fMark = 0;
 }
+void If_DsdManInvertMarks( If_DsdMan_t * p, int fVerbose )
+{
+    If_DsdObj_t * pObj; 
+    int i;
+    ABC_FREE( p->pCellStr );
+    Vec_WrdFreeP( &p->vPerms );
+    If_DsdVecForEachObj( &p->vObjs, pObj, i )
+        pObj->fMark = !pObj->fMark;
+}
 void If_DsdManFilter_rec( If_DsdMan_t * pNew, If_DsdMan_t * p, int i, Vec_Int_t * vMap )
 {
     If_DsdObj_t * pObj;
@@ -2698,6 +2707,70 @@ void Id_DsdManTuneStr( If_DsdMan_t * p, char * pStruct, int nConfls, int nProcs,
 
 #endif // pthreads are used
 
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Id_DsdManTuneThresh( If_DsdMan_t * p, int fUnate, int fThresh, int fVerbose )
+{
+    extern int Extra_ThreshCheck( word * t, int nVars, int * pW );
+    int fVeryVerbose = 0;
+    int pW[16];
+    ProgressBar * pProgress = NULL;
+    If_DsdObj_t * pObj;
+    word * pTruth, Perm;
+    int i, nVars, Value;
+    abctime clk = Abc_Clock();
+    assert( fUnate != fThresh );
+    if ( p->nObjsPrev > 0 )
+        printf( "Starting the tuning process from object %d (out of %d).\n", p->nObjsPrev, Vec_PtrSize(&p->vObjs) );
+    // clean the attributes
+    If_DsdVecForEachObj( &p->vObjs, pObj, i )
+        if ( i >= p->nObjsPrev )
+            pObj->fMark = 0;
+    if ( p->vPerms == NULL )
+        p->vPerms = Vec_WrdStart( Vec_PtrSize(&p->vObjs) );
+    else
+        Vec_WrdFillExtra( p->vPerms, Vec_PtrSize(&p->vObjs), 0 );
+    pProgress = Extra_ProgressBarStart( stdout, Vec_PtrSize(&p->vObjs) );
+    If_DsdVecForEachObjStart( &p->vObjs, pObj, i, p->nObjsPrev )
+    {
+        if ( (i & 0xFF) == 0 )
+            Extra_ProgressBarUpdate( pProgress, i, NULL );
+        nVars = If_DsdObjSuppSize(pObj);
+        pTruth = If_DsdManComputeTruth( p, Abc_Var2Lit(i, 0), NULL );
+        if ( fVeryVerbose )
+            Dau_DsdPrintFromTruth( pTruth, nVars );
+        if ( fVerbose )
+            printf( "%6d : %2d ", i, nVars );
+        if ( fUnate )
+            Value = Abc_TtIsUnate( pTruth, nVars );
+        else if ( fThresh )
+            Value = Extra_ThreshCheck( pTruth, nVars, pW );
+        Perm = 0;
+        if ( fVeryVerbose )
+            printf( "\n" );
+        if ( Value )
+            If_DsdVecObjSetMark( &p->vObjs, i );
+        else
+            Vec_WrdWriteEntry( p->vPerms, i, Perm );
+    }
+    p->nObjsPrev = 0;
+    p->LutSize = 0;
+    Extra_ProgressBarStop( pProgress );
+    printf( "Finished matching %d functions. ", Vec_PtrSize(&p->vObjs) );
+    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    if ( fVeryVerbose )
+        If_DsdManPrintDistrib( p );
+}
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////
-- 
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