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/**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 DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**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 ///
////////////////////////////////////////////////////////////////////////
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