Version abc50831

1 files changed, 261 insertions, 0 deletions

diff --git a/src/base/io/ioWriteEqn.c b/src/base/io/ioWriteEqn.c
new file mode 100644
index 00000000..6c2893b5
--- /dev/null
+++ b/src/base/io/ioWriteEqn.c
@@ -0,0 +1,261 @@
+/**CFile****************************************************************
+
+  FileName    [ioWriteEqn.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Command processing package.]
+
+  Synopsis    [Procedures to write equation representation of the network.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: ioWriteEqn.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "io.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static void Io_NtkWriteEqnOne( FILE * pFile, Abc_Ntk_t * pNtk );
+static void Io_NtkWriteEqnPis( FILE * pFile, Abc_Ntk_t * pNtk );
+static void Io_NtkWriteEqnPos( FILE * pFile, Abc_Ntk_t * pNtk );
+static void Io_NtkWriteEqnNode( FILE * pFile, Abc_Obj_t * pNode );
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFITIONS                           ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Writes the logic network in the equation format.]
+
+  Description []
+  
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Io_WriteEqn( Abc_Ntk_t * pNtk, char * pFileName )
+{
+    FILE * pFile;
+
+    assert( Abc_NtkIsSopNetlist(pNtk) );
+    if ( Abc_NtkLatchNum(pNtk) > 0 )
+        printf( "Warning: only combinational portion is being written.\n" );
+
+    // start the output stream
+    pFile = fopen( pFileName, "w" );
+    if ( pFile == NULL )
+    {
+        fprintf( stdout, "Io_WriteEqn(): Cannot open the output file \"%s\".\n", pFileName );
+        return;
+    }
+    fprintf( pFile, "# Equations for \"%s\" written by ABC on %s\n", pNtk->pName, Extra_TimeStamp() );
+
+    // write the equations for the network
+    Io_NtkWriteEqnOne( pFile, pNtk );
+    fprintf( pFile, "\n" );
+    fclose( pFile );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Write one network.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Io_NtkWriteEqnOne( FILE * pFile, Abc_Ntk_t * pNtk )
+{
+    ProgressBar * pProgress;
+    Abc_Obj_t * pNode;
+    int i;
+
+    // write the PIs
+    fprintf( pFile, "INORDER =" );
+    Io_NtkWriteEqnPis( pFile, pNtk );
+    fprintf( pFile, ";\n" );
+
+    // write the POs
+    fprintf( pFile, "OUTORDER =" );
+    Io_NtkWriteEqnPos( pFile, pNtk );
+    fprintf( pFile, ";\n" );
+
+    // write each internal node
+    pProgress = Extra_ProgressBarStart( stdout, Abc_NtkObjNumMax(pNtk) );
+    Abc_NtkForEachNode( pNtk, pNode, i )
+    {
+        Extra_ProgressBarUpdate( pProgress, i, NULL );
+        Io_NtkWriteEqnNode( pFile, pNode );
+    }
+    Extra_ProgressBarStop( pProgress );
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    [Writes the primary input list.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Io_NtkWriteEqnPis( FILE * pFile, Abc_Ntk_t * pNtk )
+{
+    Abc_Obj_t * pTerm, * pNet;
+    int LineLength;
+    int AddedLength;
+    int NameCounter;
+    int i;
+
+    LineLength  = 9;
+    NameCounter = 0;
+
+    Abc_NtkForEachCi( pNtk, pTerm, i )
+    {
+        pNet = Abc_ObjFanout0(pTerm);
+        // get the line length after this name is written
+        AddedLength = strlen(Abc_ObjName(pNet)) + 1;
+        if ( NameCounter && LineLength + AddedLength + 3 > IO_WRITE_LINE_LENGTH )
+        { // write the line extender
+            fprintf( pFile, " \n" );
+            // reset the line length
+            LineLength  = 0;
+            NameCounter = 0;
+        }
+        fprintf( pFile, " %s", Abc_ObjName(pNet) );
+        LineLength += AddedLength;
+        NameCounter++;
+    }
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Writes the primary input list.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Io_NtkWriteEqnPos( FILE * pFile, Abc_Ntk_t * pNtk )
+{
+    Abc_Obj_t * pTerm, * pNet;
+    int LineLength;
+    int AddedLength;
+    int NameCounter;
+    int i;
+
+    LineLength  = 10;
+    NameCounter = 0;
+
+    Abc_NtkForEachCo( pNtk, pTerm, i )
+    {
+        pNet = Abc_ObjFanin0(pTerm);
+        // get the line length after this name is written
+        AddedLength = strlen(Abc_ObjName(pNet)) + 1;
+        if ( NameCounter && LineLength + AddedLength + 3 > IO_WRITE_LINE_LENGTH )
+        { // write the line extender
+            fprintf( pFile, " \n" );
+            // reset the line length
+            LineLength  = 0;
+            NameCounter = 0;
+        }
+        fprintf( pFile, " %s", Abc_ObjName(pNet) );
+        LineLength += AddedLength;
+        NameCounter++;
+    }
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Write the node into a file.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Io_NtkWriteEqnNode( FILE * pFile, Abc_Obj_t * pNode )
+{
+    Abc_Obj_t * pNet;
+    int LineLength;
+    int AddedLength;
+    int NameCounter;
+    char * pCube;
+    int Value, fFirstLit, i;
+
+    fprintf( pFile, "%s = ", Abc_ObjName(pNode) );
+
+    if ( Abc_SopIsConst0(pNode->pData) )
+    {
+        fprintf( pFile, "0;\n" );
+        return;
+    }
+    if ( Abc_SopIsConst1(pNode->pData) )
+    {
+        fprintf( pFile, "1;\n" );
+        return;
+    }
+
+    NameCounter = 0;
+    LineLength  = strlen(Abc_ObjName(pNode)) + 3;
+    Abc_SopForEachCube( pNode->pData, Abc_ObjFaninNum(pNode), pCube )
+    {
+        if ( pCube != pNode->pData )
+        {
+            fprintf( pFile, " + " );
+            LineLength += 3;
+        }
+
+        // add the cube
+        fFirstLit = 1;
+        Abc_CubeForEachVar( pCube, Value, i )
+        {
+            if ( Value == '-' )
+                continue;
+            pNet = Abc_ObjFanin( pNode, i );
+            // get the line length after this name is written
+            AddedLength = !fFirstLit + (Value == '0') + strlen(Abc_ObjName(pNet));
+            if ( NameCounter && LineLength + AddedLength + 6 > IO_WRITE_LINE_LENGTH )
+            { // write the line extender
+                fprintf( pFile, " \n " );
+                // reset the line length
+                LineLength  = 0;
+                NameCounter = 0;
+            }
+            fprintf( pFile, "%s%s%s", (fFirstLit? "": "*"), ((Value == '0')? "!":""), Abc_ObjName(pNet) );
+            LineLength += AddedLength;
+            NameCounter++;
+            fFirstLit = 0;
+        }
+    }
+    fprintf( pFile, ";\n" );
+}
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+