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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 "ioAbc.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static void Io_NtkWriteEqnOne( FILE * pFile, Abc_Ntk_t * pNtk );
static void Io_NtkWriteEqnCis( FILE * pFile, Abc_Ntk_t * pNtk );
static void Io_NtkWriteEqnCos( FILE * pFile, Abc_Ntk_t * pNtk );
static int Io_NtkWriteEqnCheck( Abc_Ntk_t * pNtk );
////////////////////////////////////////////////////////////////////////
/// 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_NtkIsAigNetlist(pNtk) );
if ( Abc_NtkLatchNum(pNtk) > 0 )
printf( "Warning: only combinational portion is being written.\n" );
// check that the names are fine for the EQN format
if ( !Io_NtkWriteEqnCheck(pNtk) )
return;
// 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 )
{
Vec_Vec_t * vLevels;
ProgressBar * pProgress;
Abc_Obj_t * pNode, * pFanin;
int i, k;
// write the PIs
fprintf( pFile, "INORDER =" );
Io_NtkWriteEqnCis( pFile, pNtk );
fprintf( pFile, ";\n" );
// write the POs
fprintf( pFile, "OUTORDER =" );
Io_NtkWriteEqnCos( pFile, pNtk );
fprintf( pFile, ";\n" );
// write each internal node
vLevels = Vec_VecAlloc( 10 );
pProgress = Extra_ProgressBarStart( stdout, Abc_NtkObjNumMax(pNtk) );
Abc_NtkForEachNode( pNtk, pNode, i )
{
Extra_ProgressBarUpdate( pProgress, i, NULL );
fprintf( pFile, "%s = ", Abc_ObjName(Abc_ObjFanout0(pNode)) );
// set the input names
Abc_ObjForEachFanin( pNode, pFanin, k )
Hop_IthVar(pNtk->pManFunc, k)->pData = Abc_ObjName(pFanin);
// write the formula
Hop_ObjPrintEqn( pFile, pNode->pData, vLevels, 0 );
fprintf( pFile, ";\n" );
}
Extra_ProgressBarStop( pProgress );
Vec_VecFree( vLevels );
}
/**Function*************************************************************
Synopsis [Writes the primary input list.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Io_NtkWriteEqnCis( 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_NtkWriteEqnCos( 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 [Make sure the network does not have offending names.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Io_NtkWriteEqnCheck( Abc_Ntk_t * pNtk )
{
Abc_Obj_t * pObj;
char * pName = NULL;
int i, k, Length;
int RetValue = 1;
// make sure the network does not have proper names, such as "0" or "1" or containing parantheses
Abc_NtkForEachObj( pNtk, pObj, i )
{
pName = Nm_ManFindNameById(pNtk->pManName, i);
if ( pName == NULL )
continue;
Length = strlen(pName);
if ( pName[0] == '0' || pName[0] == '1' )
{
RetValue = 0;
break;
}
for ( k = 0; k < Length; k++ )
if ( pName[k] == '(' || pName[k] == ')' || pName[k] == '!' || pName[k] == '*' || pName[k] == '+' )
{
RetValue = 0;
break;
}
if ( k < Length )
break;
}
if ( RetValue == 0 )
{
printf( "The network cannot be written in the EQN format because object %d has name \"%s\".\n", i, pName );
printf( "Consider renaming the objects using command \"short_names\" and trying again.\n" );
}
return RetValue;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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