1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/**CFile****************************************************************
FileName [abcUnate.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Network and node package.]
Synopsis []
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: abcUnate.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "abc.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static void Abc_NtkPrintUnateBdd( Abc_Ntk_t * pNtk, int fUseNaive, int fVerbose );
static void Abc_NtkPrintUnateSat( Abc_Ntk_t * pNtk, int fVerbose );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Detects unate variables of the multi-output function.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NtkPrintUnate( Abc_Ntk_t * pNtk, int fUseBdds, int fUseNaive, int fVerbose )
{
if ( fUseBdds || fUseNaive )
Abc_NtkPrintUnateBdd( pNtk, fUseNaive, fVerbose );
else
Abc_NtkPrintUnateSat( pNtk, fVerbose );
}
/**Function*************************************************************
Synopsis [Detects unate variables using BDDs.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NtkPrintUnateBdd( Abc_Ntk_t * pNtk, int fUseNaive, int fVerbose )
{
Abc_Obj_t * pNode;
Extra_UnateInfo_t * p;
DdManager * dd; // the BDD manager used to hold shared BDDs
// DdNode ** pbGlobal; // temporary storage for global BDDs
int TotalSupps = 0;
int TotalUnate = 0;
int i, clk = clock();
int clkBdd, clkUnate;
// compute the global BDDs
dd = Abc_NtkBuildGlobalBdds(pNtk, 10000000, 1, 1, fVerbose);
if ( dd == NULL )
return;
clkBdd = clock() - clk;
// get information about the network
// dd = pNtk->pManGlob;
// dd = Abc_NtkGlobalBddMan( pNtk );
// pbGlobal = (DdNode **)Vec_PtrArray( pNtk->vFuncsGlob );
// print the size of the BDDs
printf( "Shared BDD size = %6d nodes.\n", Cudd_ReadKeys(dd) - Cudd_ReadDead(dd) );
// perform naive BDD-based computation
if ( fUseNaive )
{
Abc_NtkForEachCo( pNtk, pNode, i )
{
// p = Extra_UnateComputeSlow( dd, pbGlobal[i] );
p = Extra_UnateComputeSlow( dd, Abc_ObjGlobalBdd(pNode) );
if ( fVerbose )
Extra_UnateInfoPrint( p );
TotalSupps += p->nVars;
TotalUnate += p->nUnate;
Extra_UnateInfoDissolve( p );
}
}
// perform smart BDD-based computation
else
{
// create ZDD variables in the manager
Cudd_zddVarsFromBddVars( dd, 2 );
Abc_NtkForEachCo( pNtk, pNode, i )
{
// p = Extra_UnateComputeFast( dd, pbGlobal[i] );
p = Extra_UnateComputeFast( dd, Abc_ObjGlobalBdd(pNode) );
if ( fVerbose )
Extra_UnateInfoPrint( p );
TotalSupps += p->nVars;
TotalUnate += p->nUnate;
Extra_UnateInfoDissolve( p );
}
}
clkUnate = clock() - clk - clkBdd;
// print stats
printf( "Ins/Outs = %4d/%4d. Total supp = %5d. Total unate = %5d.\n",
Abc_NtkCiNum(pNtk), Abc_NtkCoNum(pNtk), TotalSupps, TotalUnate );
PRT( "Glob BDDs", clkBdd );
PRT( "Unateness", clkUnate );
PRT( "Total ", clock() - clk );
// deref the PO functions
// Abc_NtkFreeGlobalBdds( pNtk );
// stop the global BDD manager
// Extra_StopManager( pNtk->pManGlob );
// pNtk->pManGlob = NULL;
Abc_NtkFreeGlobalBdds( pNtk, 1 );
}
/**Function*************************************************************
Synopsis [Detects unate variables using SAT.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_NtkPrintUnateSat( Abc_Ntk_t * pNtk, int fVerbose )
{
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
|
