From 8752613e3ae41ae904efdb77889bc2fe52d872e0 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Tue, 19 Nov 2019 19:30:31 +0800
Subject: Experiments with truth tables.

---
 src/bool/kit/kitGraph.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

(limited to 'src/bool/kit/kitGraph.c')

diff --git a/src/bool/kit/kitGraph.c b/src/bool/kit/kitGraph.c
index e4eea885..08dabc7e 100644
--- a/src/bool/kit/kitGraph.c
+++ b/src/bool/kit/kitGraph.c
@@ -394,6 +394,80 @@ int Kit_GraphLeafDepth_rec( Kit_Graph_t * pGraph, Kit_Node_t * pNode, Kit_Node_t
     return Depth;
 }
 
+/**Function*************************************************************
+
+  Synopsis    [Derives logic level of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Kit_GraphLevelNum_rec( Kit_Graph_t * pGraph, Kit_Node_t * pNode )
+{
+    int Depth0, Depth1;
+    if ( Kit_GraphNodeIsVar(pGraph, pNode) )
+        return 0;
+    Depth0 = Kit_GraphLevelNum_rec( pGraph, Kit_GraphNodeFanin0(pGraph, pNode) );
+    Depth1 = Kit_GraphLevelNum_rec( pGraph, Kit_GraphNodeFanin1(pGraph, pNode) );
+    return 1 + KIT_MAX( Depth0, Depth1 );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Returns FF nodes and levels.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Kit_TruthStats( unsigned * pTruth, int nVars, Vec_Int_t * vMemory )
+{
+    Kit_Graph_t * pGraph = Kit_TruthToGraph( pTruth, nVars, vMemory );
+    int nNodes  = Kit_GraphNodeNum( pGraph );
+    int nLevels = Kit_GraphLevelNum_rec( pGraph, Kit_GraphNodeLast(pGraph) );
+    Kit_GraphFree( pGraph );
+    return (nLevels << 16) | nNodes;
+}
+int * Kit_TruthStatsArray( unsigned * pArray, int nVars, int nFuncs )
+{
+    int f, * pRes = ABC_CALLOC( int, nFuncs );
+    int nInts = Abc_TruthWordNum( nVars );
+    Vec_Int_t * vMemory = Vec_IntAlloc( 1 << 16 );
+    for ( f = 0; f < nFuncs; f++ )
+        pRes[f] = Kit_TruthStats( pArray + f*nInts, nVars, vMemory );
+    Vec_IntFree( vMemory );
+    return pRes;
+}
+int Kit_TruthFindVarNum( char * pFileName )
+{
+    int i;
+    for ( i = 0; i < (int)strlen(pFileName); i++ )
+        if ( pFileName[i] >= '0' && pFileName[i] <= '9' )
+            return atoi(pFileName+i);
+    return -1;
+}
+int * Kit_TruthTest( char * pFileName )
+{
+    abctime clk   = Abc_Clock(); int i;
+    int nFileSize = Extra_FileSize( pFileName );
+    int nVars     = Kit_TruthFindVarNum( pFileName );
+    int nFuncs    = nFileSize / 4 / Abc_TruthWordNum(nVars);
+    unsigned * pA = (unsigned *)Extra_FileReadContents( pFileName );
+    int * pResult = Kit_TruthStatsArray( pA, nVars, nFuncs );
+    printf( "Finished proceessing %d functions with %d variables. ", nFuncs, nVars );
+    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
+    ABC_FREE( pA );
+    for ( i = 0; i < 5; i++ )
+        printf( "Function %3d :  AND2 = %3d  Lev = %3d\n", i, pResult[i] & 0xFFFF, pResult[i] >> 16 );
+    return pResult;
+}
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////
-- 
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