mirror of https://github.com/YosysHQ/abc.git
229 lines
8.3 KiB
C
229 lines
8.3 KiB
C
/**CFile****************************************************************
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FileName [ioReadEdif.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 [Procedure to read ISCAS benchmarks in EDIF.]
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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: ioReadEdif.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 Abc_Ntk_t * Io_ReadEdifNetwork( Extra_FileReader_t * p );
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////////////////////////////////////////////////////////////////////////
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/// FUNCTION DEFITIONS ///
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////////////////////////////////////////////////////////////////////////
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/**Function*************************************************************
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Synopsis [Reads the network from an EDIF file.]
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Description [Works only for the ISCAS benchmarks.]
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SideEffects []
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SeeAlso []
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***********************************************************************/
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Abc_Ntk_t * Io_ReadEdif( char * pFileName, int fCheck )
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{
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Extra_FileReader_t * p;
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Abc_Ntk_t * pNtk;
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// start the file
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p = Extra_FileReaderAlloc( pFileName, "#", "\n", " \t\r()" );
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if ( p == NULL )
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return NULL;
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// read the network
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pNtk = Io_ReadEdifNetwork( p );
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Extra_FileReaderFree( p );
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if ( pNtk == NULL )
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return NULL;
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// make sure that everything is okay with the network structure
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if ( fCheck && !Abc_NtkCheckRead( pNtk ) )
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{
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printf( "Io_ReadEdif: The network check has failed.\n" );
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Abc_NtkDelete( pNtk );
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return NULL;
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}
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return pNtk;
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}
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/**Function*************************************************************
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Synopsis []
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Description []
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SideEffects []
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SeeAlso []
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***********************************************************************/
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Abc_Ntk_t * Io_ReadEdifNetwork( Extra_FileReader_t * p )
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{
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ProgressBar * pProgress;
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Vec_Ptr_t * vTokens;
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Abc_Ntk_t * pNtk;
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Abc_Obj_t * pNet, * pObj, * pFanout;
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char * pGateName, * pNetName;
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int fTokensReady, iLine, i;
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// read the first line
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vTokens = Extra_FileReaderGetTokens(p);
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if ( strcmp( vTokens->pArray[0], "edif" ) != 0 )
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{
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printf( "%s: Wrong input file format.\n", Extra_FileReaderGetFileName(p) );
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return NULL;
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}
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// allocate the empty network
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pNtk = Abc_NtkStartRead( Extra_FileReaderGetFileName(p) );
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// go through the lines of the file
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fTokensReady = 0;
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pProgress = Extra_ProgressBarStart( stdout, Extra_FileReaderGetFileSize(p) );
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for ( iLine = 1; fTokensReady || (vTokens = Extra_FileReaderGetTokens(p)); iLine++ )
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{
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Extra_ProgressBarUpdate( pProgress, Extra_FileReaderGetCurPosition(p), NULL );
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// get the type of the line
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fTokensReady = 0;
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if ( strcmp( vTokens->pArray[0], "instance" ) == 0 )
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{
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pNetName = vTokens->pArray[1];
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pNet = Abc_NtkFindOrCreateNet( pNtk, pNetName );
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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pGateName = vTokens->pArray[1];
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if ( strncmp( pGateName, "Flip", 4 ) == 0 )
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pObj = Abc_NtkCreateLatch( pNtk );
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else
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{
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pObj = Abc_NtkCreateNode( pNtk );
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pObj->pData = Abc_NtkRegisterName( pNtk, pGateName );
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}
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Abc_ObjAddFanin( pNet, pObj );
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}
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else if ( strcmp( vTokens->pArray[0], "net" ) == 0 )
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{
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pNetName = vTokens->pArray[1];
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if ( strcmp( pNetName, "CK" ) == 0 || strcmp( pNetName, "RESET" ) == 0 )
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continue;
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if ( strcmp( pNetName + strlen(pNetName) - 4, "_out" ) == 0 )
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pNetName[strlen(pNetName) - 4] = 0;
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pNet = Abc_NtkFindNet( pNtk, pNetName );
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assert( pNet );
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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while ( strcmp( vTokens->pArray[0], "portRef" ) == 0 )
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{
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if ( strcmp( pNetName, vTokens->pArray[3] ) != 0 )
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{
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pFanout = Abc_NtkFindNet( pNtk, vTokens->pArray[3] );
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Abc_ObjAddFanin( Abc_ObjFanin0(pFanout), pNet );
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}
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vTokens = Extra_FileReaderGetTokens(p);
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}
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fTokensReady = 1;
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}
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else if ( strcmp( vTokens->pArray[0], "library" ) == 0 )
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{
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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vTokens = Extra_FileReaderGetTokens(p);
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while ( strcmp( vTokens->pArray[0], "port" ) == 0 )
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{
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pNetName = vTokens->pArray[1];
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if ( strcmp( pNetName, "CK" ) == 0 || strcmp( pNetName, "RESET" ) == 0 )
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{
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vTokens = Extra_FileReaderGetTokens(p);
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continue;
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}
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if ( strcmp( pNetName + strlen(pNetName) - 3, "_PO" ) == 0 )
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pNetName[strlen(pNetName) - 3] = 0;
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if ( strcmp( vTokens->pArray[3], "INPUT" ) == 0 )
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Io_ReadCreatePi( pNtk, vTokens->pArray[1] );
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else if ( strcmp( vTokens->pArray[3], "OUTPUT" ) == 0 )
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Io_ReadCreatePo( pNtk, vTokens->pArray[1] );
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else
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{
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printf( "%s (line %d): Wrong interface specification.\n", Extra_FileReaderGetFileName(p), iLine );
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Abc_NtkDelete( pNtk );
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return NULL;
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}
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vTokens = Extra_FileReaderGetTokens(p);
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}
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}
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else if ( strcmp( vTokens->pArray[0], "design" ) == 0 )
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{
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free( pNtk->pName );
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pNtk->pName = util_strsav( vTokens->pArray[3] );
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break;
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}
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}
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Extra_ProgressBarStop( pProgress );
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// assign logic functions
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Abc_NtkForEachNode( pNtk, pObj, i )
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{
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if ( strncmp( pObj->pData, "And", 3 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateAnd(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
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else if ( strncmp( pObj->pData, "Or", 2 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateOr(pNtk->pManFunc, Abc_ObjFaninNum(pObj), NULL) );
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else if ( strncmp( pObj->pData, "Nand", 4 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateNand(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
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else if ( strncmp( pObj->pData, "Nor", 3 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateNor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
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else if ( strncmp( pObj->pData, "Exor", 4 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateXor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
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else if ( strncmp( pObj->pData, "Exnor", 5 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateNxor(pNtk->pManFunc, Abc_ObjFaninNum(pObj)) );
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else if ( strncmp( pObj->pData, "Inv", 3 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateInv(pNtk->pManFunc) );
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else if ( strncmp( pObj->pData, "Buf", 3 ) == 0 )
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Abc_ObjSetData( pObj, Abc_SopCreateBuf(pNtk->pManFunc) );
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else
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{
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printf( "%s: Unknown gate type \"%s\".\n", Extra_FileReaderGetFileName(p), pObj->pData );
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Abc_NtkDelete( pNtk );
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return NULL;
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}
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}
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// check if constants have been added
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// if ( pNet = Abc_NtkFindNet( pNtk, "VDD" ) )
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// Io_ReadCreateConst( pNtk, "VDD", 1 );
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// if ( pNet = Abc_NtkFindNet( pNtk, "GND" ) )
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// Io_ReadCreateConst( pNtk, "GND", 0 );
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Abc_NtkFinalizeRead( pNtk );
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return pNtk;
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}
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////////////////////////////////////////////////////////////////////////
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/// END OF FILE ///
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////////////////////////////////////////////////////////////////////////
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