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|
/**CFile****************************************************************
FileName [ifDec10.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [FPGA mapping based on priority cuts.]
Synopsis [Performs additional check.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - November 21, 2006.]
Revision [$Id: ifDec10.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
***********************************************************************/
#include "if.h"
#include "misc/extra/extra.h"
#include "bool/kit/kit.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
// the bit count for the first 256 integer numbers
static int BitCount8[256] = {
0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8
};
// variable swapping code
static word PMasks[5][3] = {
{ ABC_CONST(0x9999999999999999), ABC_CONST(0x2222222222222222), ABC_CONST(0x4444444444444444) },
{ ABC_CONST(0xC3C3C3C3C3C3C3C3), ABC_CONST(0x0C0C0C0C0C0C0C0C), ABC_CONST(0x3030303030303030) },
{ ABC_CONST(0xF00FF00FF00FF00F), ABC_CONST(0x00F000F000F000F0), ABC_CONST(0x0F000F000F000F00) },
{ ABC_CONST(0xFF0000FFFF0000FF), ABC_CONST(0x0000FF000000FF00), ABC_CONST(0x00FF000000FF0000) },
{ ABC_CONST(0xFFFF00000000FFFF), ABC_CONST(0x00000000FFFF0000), ABC_CONST(0x0000FFFF00000000) }
};
// elementary truth tables
static word Truth6[6] = {
ABC_CONST(0xAAAAAAAAAAAAAAAA),
ABC_CONST(0xCCCCCCCCCCCCCCCC),
ABC_CONST(0xF0F0F0F0F0F0F0F0),
ABC_CONST(0xFF00FF00FF00FF00),
ABC_CONST(0xFFFF0000FFFF0000),
ABC_CONST(0xFFFFFFFF00000000)
};
static word Truth10[10][16] = {
{ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA),ABC_CONST(0xAAAAAAAAAAAAAAAA)},
{ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC),ABC_CONST(0xCCCCCCCCCCCCCCCC)},
{ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0),ABC_CONST(0xF0F0F0F0F0F0F0F0)},
{ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00),ABC_CONST(0xFF00FF00FF00FF00)},
{ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000),ABC_CONST(0xFFFF0000FFFF0000)},
{ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000),ABC_CONST(0xFFFFFFFF00000000)},
{ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF)},
{ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF)},
{ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF)},
{ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0x0000000000000000),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF),ABC_CONST(0xFFFFFFFFFFFFFFFF)}
};
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
static inline int If_Dec10WordNum( int nVars )
{
return nVars <= 6 ? 1 : 1 << (nVars-6);
}
static void If_Dec10PrintConfigOne( unsigned z )
{
unsigned t;
t = (z & 0xffff) | ((z & 0xffff) << 16);
Extra_PrintBinary( stdout, &t, 16 );
printf( " " );
Kit_DsdPrintFromTruth( &t, 4 );
printf( " " );
printf( " %d", (z >> 16) & 7 );
printf( " %d", (z >> 20) & 7 );
printf( " %d", (z >> 24) & 7 );
printf( " %d", (z >> 28) & 7 );
printf( "\n" );
}
void If_Dec10PrintConfig( unsigned * pZ )
{
while ( *pZ )
If_Dec10PrintConfigOne( *pZ++ );
}
static inline void If_Dec10ComposeLut4( int t, word ** pF, word * pR, int nVars )
{
word pC[16];
int m, w, v, nWords;
assert( nVars <= 10 );
nWords = If_Dec10WordNum( nVars );
for ( w = 0; w < nWords; w++ )
pR[w] = 0;
for ( m = 0; m < 16; m++ )
{
if ( !((t >> m) & 1) )
continue;
for ( w = 0; w < nWords; w++ )
pC[w] = ~(word)0;
for ( v = 0; v < 4; v++ )
for ( w = 0; w < nWords; w++ )
pC[w] &= ((m >> v) & 1) ? pF[v][w] : ~pF[v][w];
for ( w = 0; w < nWords; w++ )
pR[w] |= pC[w];
}
}
void If_Dec10Verify( word * pF, int nVars, unsigned * pZ )
{
word pN[16][16], * pG[4];
int i, w, v, k, nWords;
unsigned z;
nWords = If_Dec10WordNum( nVars );
for ( k = 0; k < nVars; k++ )
for ( w = 0; w < nWords; w++ )
pN[k][w] = Truth10[k][w];
for ( i = 0; (z = pZ[i]); i++, k++ )
{
for ( v = 0; v < 4; v++ )
pG[v] = pN[ (z >> (16+(v<<2))) & 7 ];
If_Dec10ComposeLut4( (int)(z & 0xffff), pG, pN[k], nVars );
}
k--;
for ( w = 0; w < nWords; w++ )
if ( pN[k][w] != pF[w] )
{
If_Dec10PrintConfig( pZ );
Kit_DsdPrintFromTruth( (unsigned*)pF, nVars ); printf( "\n" );
Kit_DsdPrintFromTruth( (unsigned*)pN[k], nVars ); printf( "\n" );
printf( "Verification failed!\n" );
break;
}
}
// count the number of unique cofactors
static inline int If_Dec10CofCount2( word * pF, int nVars )
{
int nShift = (1 << (nVars - 4));
word Mask = (((word)1) << nShift) - 1;
word iCof0 = pF[0] & Mask;
word iCof1 = iCof0, iCof;
int i;
assert( nVars > 6 && nVars <= 10 );
if ( nVars == 10 )
Mask = ~(word)0;
for ( i = 1; i < 16; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
if ( iCof == iCof0 )
continue;
if ( iCof1 == iCof0 )
iCof1 = iCof;
else if ( iCof != iCof1 )
return 3;
}
return 2;
}
static inline int If_Dec10CofCount( word * pF, int nVars )
{
int nShift = (1 << (nVars - 4));
word Mask = (((word)1) << nShift) - 1;
word iCofs[16], iCof;
int i, c, nCofs = 1;
if ( nVars == 10 )
Mask = ~(word)0;
iCofs[0] = pF[0] & Mask;
for ( i = 1; i < 16; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
for ( c = 0; c < nCofs; c++ )
if ( iCof == iCofs[c] )
break;
if ( c == nCofs )
iCofs[nCofs++] = iCof;
}
return nCofs;
}
// variable permutation for large functions
static inline void If_Dec10Copy( word * pOut, word * pIn, int nVars )
{
int w, nWords = If_Dec10WordNum( nVars );
for ( w = 0; w < nWords; w++ )
pOut[w] = pIn[w];
}
static inline void If_Dec10SwapAdjacent( word * pOut, word * pIn, int iVar, int nVars )
{
int i, k, nWords = If_Dec10WordNum( nVars );
assert( iVar < nVars - 1 );
if ( iVar < 5 )
{
int Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
pOut[i] = (pIn[i] & PMasks[iVar][0]) | ((pIn[i] & PMasks[iVar][1]) << Shift) | ((pIn[i] & PMasks[iVar][2]) >> Shift);
}
else if ( iVar > 5 )
{
int Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 4*Step )
{
for ( i = 0; i < Step; i++ )
pOut[i] = pIn[i];
for ( i = 0; i < Step; i++ )
pOut[Step+i] = pIn[2*Step+i];
for ( i = 0; i < Step; i++ )
pOut[2*Step+i] = pIn[Step+i];
for ( i = 0; i < Step; i++ )
pOut[3*Step+i] = pIn[3*Step+i];
pIn += 4*Step;
pOut += 4*Step;
}
}
else // if ( iVar == 5 )
{
for ( i = 0; i < nWords; i += 2 )
{
pOut[i] = (pIn[i] & ABC_CONST(0x00000000FFFFFFFF)) | ((pIn[i+1] & ABC_CONST(0x00000000FFFFFFFF)) << 32);
pOut[i+1] = (pIn[i+1] & ABC_CONST(0xFFFFFFFF00000000)) | ((pIn[i] & ABC_CONST(0xFFFFFFFF00000000)) >> 32);
}
}
}
static inline void If_Dec10MoveTo( word * pF, int nVars, int v, int p, int Pla2Var[], int Var2Pla[] )
{
word pG[16], * pIn = pF, * pOut = pG, * pTemp;
int iPlace0, iPlace1, Count = 0;
assert( Var2Pla[v] <= p );
while ( Var2Pla[v] != p )
{
iPlace0 = Var2Pla[v];
iPlace1 = Var2Pla[v]+1;
If_Dec10SwapAdjacent( pOut, pIn, iPlace0, nVars );
pTemp = pIn; pIn = pOut, pOut = pTemp;
Var2Pla[Pla2Var[iPlace0]]++;
Var2Pla[Pla2Var[iPlace1]]--;
Pla2Var[iPlace0] ^= Pla2Var[iPlace1];
Pla2Var[iPlace1] ^= Pla2Var[iPlace0];
Pla2Var[iPlace0] ^= Pla2Var[iPlace1];
Count++;
}
if ( Count & 1 )
If_Dec10Copy( pF, pIn, nVars );
assert( Pla2Var[p] == v );
}
/*
// derive binary function
static inline int If_Dec10DeriveCount2( word * pF, word * pRes, int nVars )
{
int nShift = (1 << (nVars - 4));
word Mask = (((word)1) << nShift) - 1;
int i, MaskDec = 0;
word iCof0 = pF[0] & Mask;
word iCof1 = pF[0] & Mask;
word iCof, * pCof0, * pCof1;
if ( nVars == 10 )
Mask = ~(word)0;
for ( i = 1; i < 16; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
if ( *pCof0 != iCof )
{
*pCof1 = iCof;
MaskDec |= (1 << i);
}
}
*pRes = ((iCof1 << nShift) | iCof0);
return MaskDec;
}
static inline word If_DecTruthStretch( word t, int nVars )
{
assert( nVars > 1 );
if ( nVars == 1 )
nVars++, t = (t & 0x3) | ((t & 0x3) << 2);
if ( nVars == 2 )
nVars++, t = (t & 0xF) | ((t & 0xF) << 4);
if ( nVars == 3 )
nVars++, t = (t & 0xFF) | ((t & 0xFF) << 8);
if ( nVars == 4 )
nVars++, t = (t & 0xFFFF) | ((t & 0xFFFF) << 16);
if ( nVars == 5 )
nVars++, t = (t & 0xFFFFFFFF) | ((t & 0xFFFFFFFF) << 32);
assert( nVars >= 6 );
}
*/
// support minimization
static inline int If_DecSuppIsMinBase( int Supp )
{
return (Supp & (Supp+1)) == 0;
}
static inline int If_Dec10HasVar( word * t, int nVars, int iVar )
{
int nWords = If_Dec10WordNum( nVars );
assert( iVar < nVars );
if ( iVar < 6 )
{
int i, Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
if ( (t[i] & ~Truth6[iVar]) != ((t[i] & Truth6[iVar]) >> Shift) )
return 1;
return 0;
}
else
{
int i, k, Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 2*Step )
{
for ( i = 0; i < Step; i++ )
if ( t[i] != t[Step+i] )
return 1;
t += 2*Step;
}
return 0;
}
}
static inline int If_Dec10Support( word * t, int nVars )
{
int v, Supp = 0;
for ( v = 0; v < nVars; v++ )
if ( If_Dec10HasVar( t, nVars, v ) )
Supp |= (1 << v);
return Supp;
}
// checks
void If_Dec10Cofactors( word * pF, int nVars, int iVar, word * pCof0, word * pCof1 )
{
int nWords = If_Dec10WordNum( nVars );
assert( iVar < nVars );
if ( iVar < 6 )
{
int i, Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
{
pCof0[i] = (pF[i] & ~Truth6[iVar]) | ((pF[i] & ~Truth6[iVar]) << Shift);
pCof1[i] = (pF[i] & Truth6[iVar]) | ((pF[i] & Truth6[iVar]) >> Shift);
}
return;
}
else
{
int i, k, Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 2*Step )
{
for ( i = 0; i < Step; i++ )
{
pCof0[i] = pCof0[Step+i] = pF[i];
pCof1[i] = pCof1[Step+i] = pF[Step+i];
}
pF += 2*Step;
pCof0 += 2*Step;
pCof1 += 2*Step;
}
return;
}
}
static inline int If_Dec10Count16( int Num16 )
{
assert( Num16 < (1<<16)-1 );
return BitCount8[Num16 & 255] + BitCount8[(Num16 >> 8) & 255];
}
static inline void If_DecVerifyPerm( int Pla2Var[10], int Var2Pla[10], int nVars )
{
int i;
for ( i = 0; i < nVars; i++ )
assert( Pla2Var[Var2Pla[i]] == i );
}
int If_Dec10Perform( word * pF, int nVars, int fDerive )
{
// static int Cnt = 0;
word pCof0[16], pCof1[16];
int Pla2Var[10], Var2Pla[10], Count[210], Masks[210];
int i, i0,i1,i2,i3, v, x;
assert( nVars >= 6 && nVars <= 10 );
// start arrays
for ( i = 0; i < nVars; i++ )
{
assert( If_Dec10HasVar( pF, nVars, i ) );
Pla2Var[i] = Var2Pla[i] = i;
}
/*
Cnt++;
//if ( Cnt == 108 )
{
printf( "%d\n", Cnt );
//Extra_PrintHex( stdout, (unsigned *)pF, nVars );
//printf( "\n" );
Kit_DsdPrintFromTruth( (unsigned *)pF, nVars );
printf( "\n" );
printf( "\n" );
}
*/
// generate permutations
v = 0;
for ( i0 = 0; i0 < nVars; i0++ )
for ( i1 = i0+1; i1 < nVars; i1++ )
for ( i2 = i1+1; i2 < nVars; i2++ )
for ( i3 = i2+1; i3 < nVars; i3++, v++ )
{
If_Dec10MoveTo( pF, nVars, i0, nVars-1, Pla2Var, Var2Pla );
If_Dec10MoveTo( pF, nVars, i1, nVars-2, Pla2Var, Var2Pla );
If_Dec10MoveTo( pF, nVars, i2, nVars-3, Pla2Var, Var2Pla );
If_Dec10MoveTo( pF, nVars, i3, nVars-4, Pla2Var, Var2Pla );
If_DecVerifyPerm( Pla2Var, Var2Pla, nVars );
Count[v] = If_Dec10CofCount( pF, nVars );
Masks[v] = (1 << i0) | (1 << i1) | (1 << i2) | (1 << i3);
assert( Count[v] > 1 );
//printf( "%d ", Count[v] );
if ( Count[v] == 2 || Count[v] > 5 )
continue;
for ( x = 0; x < 4; x++ )
{
If_Dec10Cofactors( pF, nVars, nVars-1-x, pCof0, pCof1 );
if ( If_Dec10CofCount2(pCof0, nVars) <= 2 && If_Dec10CofCount2(pCof1, nVars) <= 2 )
{
Count[v] = -Count[v];
break;
}
}
}
//printf( "\n" );
assert( v <= 210 );
// check if there are compatible bound sets
for ( i0 = 0; i0 < v; i0++ )
for ( i1 = i0+1; i1 < v; i1++ )
{
if ( If_Dec10Count16(Masks[i0] & Masks[i1]) > 10 - nVars )
continue;
if ( nVars == 10 )
{
if ( Count[i0] == 2 && Count[i1] == 2 )
return 1;
}
else if ( nVars == 9 )
{
if ( (Count[i0] == 2 && Count[i1] == 2) ||
(Count[i0] == 2 && Count[i1] < 0) ||
(Count[i0] < 0 && Count[i1] == 2) )
return 1;
}
else
{
if ( (Count[i0] == 2 && Count[i1] == 2) ||
(Count[i0] == 2 && Count[i1] < 0) ||
(Count[i0] < 0 && Count[i1] == 2) ||
(Count[i0] < 0 && Count[i1] < 0) )
return 1;
}
}
// printf( "not found\n" );
return 0;
}
/**Function*************************************************************
Synopsis [Performs additional check.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int If_CutPerformCheck10( If_Man_t * p, unsigned * pTruth, int nVars, int nLeaves, char * pStr )
{
int nSupp, fDerive = 0;
word pF[16];
if ( nLeaves <= 6 )
return 1;
If_Dec10Copy( pF, (word *)pTruth, nVars );
nSupp = If_Dec10Support( pF, nLeaves );
if ( !nSupp || !If_DecSuppIsMinBase(nSupp) )
return 0;
if ( If_Dec10Perform( pF, nLeaves, fDerive ) )
{
// printf( "1" );
return 1;
// If_Dec10Verify( t, nLeaves, NULL );
}
// printf( "0" );
return 0;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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