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