abcNpnSave.c File Reference

#include "base/abc/abc.h"
#include "aig/aig/aig.h"

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Classes
struct	Npn_Obj_t_
struct	Npn_Man_t_

Typedefs
typedef typedefABC_NAMESPACE_IMPL_START struct Npn_Obj_t_	Npn_Obj_t
	DECLARATIONS ///.
typedef struct Npn_Man_t_	Npn_Man_t

Functions
void	Npn_TruthPermute_rec (char *pStr, int mid, int end)
	FUNCTION DEFINITIONS ///.
word	Npn_TruthPadWord (word uTruth, int nVars)
void	Npn_ManResize (Npn_Man_t *p)
Npn_Obj_t *	Npn_ManAdd (Npn_Man_t *p, word uTruth)
void	Npn_ManRead (Npn_Man_t *p, char *pFileName)
void	Npn_ManWrite (Npn_Man_t *p, char *pFileName)
Npn_Man_t *	Npn_ManStart (char *pFileName)
void	Npn_ManStop (Npn_Man_t *p)
void	Npn_ManClean ()
void	Npn_ManLoad (char *pFileName)
void	Npn_ManSave (char *pFileName)
void	Npn_ManSaveOne (unsigned *puTruth, int nVars)

Typedef Documentation

Npn_Man_t

typedef struct Npn_Man_t_ Npn_Man_t

Definition at line 32 of file abcNpnSave.c.

Npn_Obj_t

typedef typedefABC_NAMESPACE_IMPL_START struct Npn_Obj_t_ Npn_Obj_t

DECLARATIONS ///.

CFile****************************************************************

FileName [abcNpnSave.c]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [Network and node package.]

Synopsis [Interface with the FPGA mapping package.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - November 21, 2006.]

Revision [

Id

abcNpnSave.c,v 1.00 2006/11/21 00:00:00 alanmi Exp

]

Definition at line 31 of file abcNpnSave.c.

Function Documentation

Npn_ManAdd()

Npn_Obj_t * Npn_ManAdd	(	Npn_Man_t *	p,
		word	uTruth )

Function*************************************************************

Synopsis [Adds one entry to the table.]

Description [Increments ref counter by 1.]

SideEffects []

SeeAlso []

Definition at line 437 of file abcNpnSave.c.

{
    Npn_Obj_t * pEntry;
    int * pPlace, Key = Npn_ManHash( p, uTruth );
    // resize the link storage if needed
    if ( p->nEntries == p->nBufferSize )
    {
        p->nBufferSize *= 2;
        p->pBuffer = ABC_REALLOC( Npn_Obj_t, p->pBuffer, p->nBufferSize );
    }
    // find the entry
    for ( pEntry = Npn_ManObj(p, p->pBins[Key]), 
          pPlace = p->pBins + Key; 
          pEntry; 
          pPlace = &pEntry->iNext, 
          pEntry = Npn_ManObj(p, pEntry->iNext) )
        if ( pEntry->uTruth == uTruth )
        {
            pEntry->Count++;
            return pEntry;
        }
    // create new entry
    *pPlace = p->nEntries;
    assert( p->nEntries < p->nBufferSize );
    pEntry = Npn_ManObj( p, p->nEntries++ );
    pEntry->uTruth = uTruth;
    pEntry->Count = 1;
    pEntry->iNext = 0;
    // resize the table if needed
    if ( p->nEntries > 3 * p->nBins )
        Npn_ManResize( p );
    return pEntry;
}

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Npn_ManClean()

void Npn_ManClean

(

)

Function*************************************************************

Synopsis [Cleans the manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 649 of file abcNpnSave.c.

{
    if ( pNpnMan != NULL )
    {
        Npn_ManStop( pNpnMan );
        pNpnMan = NULL;
    }
}

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Npn_ManLoad()

void Npn_ManLoad

(

char *

pFileName

)

Function*************************************************************

Synopsis [Loads functions from a file.]

Description []

SideEffects []

SeeAlso []

Definition at line 669 of file abcNpnSave.c.

{
//    Npn_TruthPermute_rec( "012345", 0, 5 );
    if ( pNpnMan != NULL )
    {
        Abc_Print( 1, "Removing old table with %d entries.\n", pNpnMan->nEntries );
        Npn_ManStop( pNpnMan );
    }
    pNpnMan = Npn_ManStart( pFileName );
    Abc_Print( 1, "Created new table with %d entries from file \"%s\".\n", pNpnMan->nEntries, pFileName );
}

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Npn_ManRead()

void Npn_ManRead	(	Npn_Man_t *	p,
		char *	pFileName )

Function*************************************************************

Synopsis [Fills table from file.]

Description []

SideEffects []

SeeAlso []

Definition at line 482 of file abcNpnSave.c.

{
    char pBuffer[1000];
    char * pToken;
    Npn_Obj_t * pEntry;
    unsigned Truth[2];
    word uTruth;
    FILE * pFile = fopen( pFileName, "r" );
    if ( pFile == NULL )
    {
        Abc_Print( -1, "Cannot open NPN function file \"%s\".\n", pFileName );
        return;
    }
    // read lines from the file
    while ( fgets( pBuffer, 1000, pFile ) != NULL )
    {
        pToken = strtok( pBuffer, " \t\n" );
        if ( pToken == NULL )
            continue;
        if ( pToken[0] == '#' )
            continue;
        if ( strlen(pToken) != 16 )
        {
            Abc_Print( 0, "Skipping token %s that does not look like a 16-digit hex number.\n" );
            continue;
        }
        // extract truth table
        Extra_ReadHexadecimal( Truth, pToken, 6 );
        uTruth = (((word)Truth[1]) << 32) | (word)Truth[0];
        // add truth table
        pEntry = Npn_ManAdd( p, uTruth );
        assert( pEntry->Count == 1 );
        // read area
        pToken = strtok( NULL, " \t\n" );
        pEntry->Count = atoi(pToken);
    }
    fclose( pFile );
}

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Npn_ManResize()

void Npn_ManResize

(

Npn_Man_t *

p

)

Function*************************************************************

Synopsis [Resizes the table.]

Description []

SideEffects []

SeeAlso []

Definition at line 391 of file abcNpnSave.c.

{
    Npn_Obj_t * pEntry, * pNext;
    int * pBinsOld, * ppPlace;
    int nBinsOld, Counter, i;
    abctime clk;
    assert( p->pBins != NULL );
clk = Abc_Clock();
    // save the old Bins
    pBinsOld = p->pBins;
    nBinsOld = p->nBins;
    // get the new Bins
    p->nBins = Abc_PrimeCudd( 3 * nBinsOld ); 
    p->pBins = ABC_CALLOC( int, p->nBins );
    // rehash the entries from the old table
    Counter = 1;
    for ( i = 0; i < nBinsOld; i++ )
    for ( pEntry = Npn_ManObj(p, pBinsOld[i]), 
          pNext = pEntry ? Npn_ManObj(p, pEntry->iNext) : NULL; 
          pEntry; 
          pEntry = pNext, 
          pNext = pEntry ? Npn_ManObj(p, pEntry->iNext) : NULL )
    {
        // get the place where this entry goes 
        ppPlace = p->pBins + Npn_ManHash( p, pEntry->uTruth );
        // add the entry to the list
        pEntry->iNext = *ppPlace;
        *ppPlace = Npn_ManObjNum( p, pEntry );
        Counter++;
    }
    assert( Counter == p->nEntries );
    ABC_FREE( pBinsOld );
//ABC_PRT( "Hash table resizing time", Abc_Clock() - clk );
}

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Npn_ManSave()

void Npn_ManSave

(

char *

pFileName

)

Function*************************************************************

Synopsis [Saves functions into a file.]

Description []

SideEffects []

SeeAlso []

Definition at line 692 of file abcNpnSave.c.

{
    if ( pNpnMan == NULL )
    {
        Abc_Print( 1, "There is no table with entries.\n" );
        return;
    }
    Npn_ManWrite( pNpnMan, pFileName );
    Abc_Print( 1, "Dumped table with %d entries from file \"%s\".\n", pNpnMan->nEntries, pFileName );
}

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Npn_ManSaveOne()

void Npn_ManSaveOne	(	unsigned *	puTruth,
		int	nVars )

Function*************************************************************

Synopsis [Saves one function into storage.]

Description []

SideEffects []

SeeAlso []

Definition at line 714 of file abcNpnSave.c.

{
    word uTruth = (((word)puTruth[1]) << 32) | (word)puTruth[0];
    assert( nVars >= 0 && nVars <= 6 );
    if ( pNpnMan == NULL )
    {
        Abc_Print( 1, "Creating new table with 0 entries.\n" );
        pNpnMan = Npn_ManStart( NULL );
    }
    // skip truth tables that do not depend on some vars
    if ( !Npn_TruthIsMinBase( uTruth ) )
        return;
    // extend truth table to look like 6-input
    uTruth = Npn_TruthPadWord( uTruth, nVars );
    // semi(!)-NPN-canonize the truth table
    uTruth = Npn_TruthCanon( uTruth, 6, NULL );
    // add to storage
    Npn_ManAdd( pNpnMan, uTruth );
}

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Npn_ManStart()

Npn_Man_t * Npn_ManStart

(

char *

pFileName

)

Function*************************************************************

Synopsis [Creates the manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 588 of file abcNpnSave.c.

{
    Npn_Man_t * p;
    p = ABC_CALLOC( Npn_Man_t, 1 );
    if ( pFileName == NULL )
    {
        p->nBufferSize = 1000000;
        p->nBufferSize = 100;
        p->pBuffer     = ABC_ALLOC( Npn_Obj_t, p->nBufferSize );
        p->nBins       = Abc_PrimeCudd( p->nBufferSize / 2 );
        p->pBins       = ABC_CALLOC( int, p->nBins );
        p->nEntries    = 1;
    }
    else
    {
        FILE * pFile = fopen( pFileName, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open NPN function file \"%s\".\n", pFileName );
            return NULL;
        }
        fclose( pFile );
        p->nBufferSize = 4 * ( Extra_FileSize(pFileName) / 20 );
        p->pBuffer     = ABC_ALLOC( Npn_Obj_t, p->nBufferSize );
        p->nBins       = Abc_PrimeCudd( p->nBufferSize / 2 );
        p->pBins       = ABC_CALLOC( int, p->nBins );
        p->nEntries    = 1;
        Npn_ManRead( p, pFileName );
    }
    return p;
}

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Npn_ManStop()

void Npn_ManStop

(

Npn_Man_t *

p

)

Function*************************************************************

Synopsis [Deletes the manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 631 of file abcNpnSave.c.

{
    ABC_FREE( p->pBuffer );
    ABC_FREE( p->pBins );
    ABC_FREE( p );
}

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Npn_ManWrite()

void Npn_ManWrite	(	Npn_Man_t *	p,
		char *	pFileName )

Function*************************************************************

Synopsis [Adds one entry to the table.]

Description []

SideEffects []

SeeAlso []

Definition at line 552 of file abcNpnSave.c.

{
    Vec_Ptr_t * vEntries;
    Npn_Obj_t * pEntry;
    FILE * pFile = fopen( pFileName, "w" );
    int i;
    if ( pFile == NULL )
    {
        Abc_Print( -1, "Cannot open NPN function file \"%s\".\n", pFileName );
        return;
    }
    vEntries = Vec_PtrAlloc( p->nEntries );
    for ( i = 0; i < p->nBins; i++ )
        for ( pEntry = Npn_ManObj(p, p->pBins[i]); pEntry; pEntry = Npn_ManObj(p, pEntry->iNext) )
            Vec_PtrPush( vEntries, pEntry );
    Vec_PtrSort( vEntries, (int (*)(const void *, const void *))Npn_ManCompareEntries );
    Vec_PtrForEachEntry( Npn_Obj_t *, vEntries, pEntry, i )
    {
        Extra_PrintHexadecimal( pFile, (unsigned *)&pEntry->uTruth, 6 );
        fprintf( pFile, " %d %d\n", pEntry->Count, Npn_TruthSuppSize(pEntry->uTruth, 6) );
    }
    fclose( pFile );
    Vec_PtrFree( vEntries );
}

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Npn_TruthPadWord()

word Npn_TruthPadWord	(	word	uTruth,
		int	nVars )

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 191 of file abcNpnSave.c.

{
    if ( nVars == 6 )
        return uTruth;
    if ( nVars <= 5 )
        uTruth = ((uTruth & ABC_CONST(0x00000000FFFFFFFF)) << 32) | (uTruth & ABC_CONST(0x00000000FFFFFFFF));
    if ( nVars <= 4 )
        uTruth = ((uTruth & ABC_CONST(0x0000FFFF0000FFFF)) << 16) | (uTruth & ABC_CONST(0x0000FFFF0000FFFF));
    if ( nVars <= 3 )
        uTruth = ((uTruth & ABC_CONST(0x00FF00FF00FF00FF)) <<  8) | (uTruth & ABC_CONST(0x00FF00FF00FF00FF));
    if ( nVars <= 2 )
        uTruth = ((uTruth & ABC_CONST(0x0F0F0F0F0F0F0F0F)) <<  4) | (uTruth & ABC_CONST(0x0F0F0F0F0F0F0F0F));
    if ( nVars <= 1 )
        uTruth = ((uTruth & ABC_CONST(0x3333333333333333)) <<  2) | (uTruth & ABC_CONST(0x3333333333333333));
    if ( nVars == 0 )
        uTruth = ((uTruth & ABC_CONST(0x5555555555555555)) <<  1) | (uTruth & ABC_CONST(0x5555555555555555));
    return uTruth;
}

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Npn_TruthPermute_rec()

void Npn_TruthPermute_rec	(	char *	pStr,
		int	mid,
		int	end )

FUNCTION DEFINITIONS ///.

Function*************************************************************

Synopsis []

Description []

SideEffects []

SeeAlso []

Definition at line 80 of file abcNpnSave.c.

{
    static int count = 0;
    char * pTemp = Abc_UtilStrsav(pStr);
    char e;
    int i;
    if ( mid == end ) 
    {
        printf( "%03d: %s\n", count++, pTemp );
        return ;
    }
    for ( i = mid; i <= end; i++ )
    {
        e = pTemp[mid];
        pTemp[mid] = pTemp[i];
        pTemp[i] = e;
 
        Npn_TruthPermute_rec( pTemp, mid + 1, end );
 
        e = pTemp[mid];
        pTemp[mid] = pTemp[i];
        pTemp[i] = e;
    }
    ABC_FREE( pTemp );
}

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