source: vis_dev/vis-2.3/src/mvf/mvf.h @ 57

Last change on this file since 57 was 14, checked in by cecile, 13 years ago

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1/**CHeaderFile*****************************************************************
2
3  FileName    [mvf.h]
4
5  PackageName [mvf]
6
7  Synopsis    [Creation and manipulation of MDD-based multi-valued functions.]
8
9  Description [This package is used to create and manipulate single output
10  functions that take multiple values, and are defined over multi-valued
11  variables.  Mathematically, such a function is described as, f: Y1 x Y2 x
12  ... x Yn --> Yn+1.  Each Yi is a finite, ordered set; if Yi is of
13  cardinality k, then the elements of Yi are {0, 1, ..., k-1}. We use yi do
14  denote a variable over Yi. If<p>
15
16  A single MDD over variables y1,...,yn cannot be used to represent f, because
17  an MDD can only represent binary-valued functions, not multi-valued
18  functions.  Instead, to represent f, we use an array of MDDs, of length
19  equal to the cardinality of Yn+1.  Each MDD of this array is defined over
20  y1,...,yn.  Furthermore, the minterms for which the ith MDD, fi, evaluates
21  to one, are exactly those minterms for which f evaluates to the ith member
22  of Yn+1.  If f is deterministic, then the intersection of fi and fj, for i
23  not equal to j, is empty.  If f is completely specified, then the union of
24  the fi's is the tautology.  The union of the fi's is referred to as the
25  "domain" of the function.]
26
27  SeeAlso     [mdd]
28
29  Author      [Tom Shiple]
30
31  Copyright   [Copyright (c) 1994-1996 The Regents of the Univ. of California.
32  All rights reserved.
33
34  Permission is hereby granted, without written agreement and without license
35  or royalty fees, to use, copy, modify, and distribute this software and its
36  documentation for any purpose, provided that the above copyright notice and
37  the following two paragraphs appear in all copies of this software.
38
39  IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
40  DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
41  OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
42  CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43
44  THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
45  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
46  FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN
47  "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE
48  MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.]
49
50  Revision    [$Id: mvf.h,v 1.2 2002/09/08 21:42:15 fabio Exp $]
51
52******************************************************************************/
53
54#ifndef _MVF
55#define _MVF
56
57/*---------------------------------------------------------------------------*/
58/* Nested includes                                                           */
59/*---------------------------------------------------------------------------*/
60#include "vm.h"
61
62/*---------------------------------------------------------------------------*/
63/* Type declarations                                                         */
64/*---------------------------------------------------------------------------*/
65typedef array_t Mvf_Function_t;
66
67
68/*---------------------------------------------------------------------------*/
69/* Macro declarations                                                        */
70/*---------------------------------------------------------------------------*/
71
72/**Macro***********************************************************************
73
74  Synopsis     [Iterates over the components of a multi-valued function.]
75
76  Description [This macro iterates over the components of a multi-valued
77  function.]
78
79  SideEffects  [This macro instantiates macros from the array package.  Hence
80  it is advisable not to nest this macro within array macros.]
81
82  SeeAlso      [Mvf_FunctionAlloc]
83
84******************************************************************************/
85#define Mvf_FunctionForEachComponent(                                       \
86  /* Mvf_Function_t * */ function  /* function to iterate components */,    \
87  /* int */              i         /* local variable for iterator */,       \
88  /* mdd_t * */          component /* component of function */              \
89)                                                                           \
90  arrayForEachItem(mdd_t *, (array_t *) function, i, component)
91
92
93/**AutomaticStart*************************************************************/
94
95/*---------------------------------------------------------------------------*/
96/* Function prototypes                                                       */
97/*---------------------------------------------------------------------------*/
98
99EXTERN void Mvf_Init(void);
100EXTERN void Mvf_End(void);
101EXTERN Mvf_Function_t * Mvf_FunctionAlloc(mdd_manager *mddManager, int n);
102EXTERN void Mvf_FunctionAddMintermsToComponent(Mvf_Function_t *function, int i, mdd_t *g);
103EXTERN mdd_t * Mvf_FunctionBuildRelationWithVariable(Mvf_Function_t *function, int mddId);
104EXTERN int Mvf_FunctionReadNumComponents(Mvf_Function_t *function);
105EXTERN mdd_manager * Mvf_FunctionReadMddManager(Mvf_Function_t *function);
106EXTERN Mvf_Function_t * Mvf_FunctionDuplicate(Mvf_Function_t *function);
107EXTERN void Mvf_FunctionFree(Mvf_Function_t *function);
108EXTERN void Mvf_FunctionArrayFree(array_t *functionArray);
109EXTERN mdd_t * Mvf_FunctionObtainComponent(Mvf_Function_t *function, int i);
110EXTERN mdd_t * Mvf_FunctionReadComponent(Mvf_Function_t *function, int i);
111EXTERN Mvf_Function_t * Mvf_FunctionCreateFromVariable(mdd_manager *mddManager, int mddId);
112EXTERN Mvf_Function_t * Mvf_FunctionComposeWithFunctionArray(Mvf_Function_t *f, array_t *mddIdArray, array_t *functionArray);
113EXTERN Mvf_Function_t * Mvf_FunctionComposeWithFunction(Mvf_Function_t *f, int mddId, Mvf_Function_t *g);
114EXTERN mdd_t * Mvf_MddComposeWithFunction(mdd_t *f, int mddId, Mvf_Function_t *g);
115EXTERN boolean Mvf_FunctionTestIsDeterministic(Mvf_Function_t *function);
116EXTERN boolean Mvf_FunctionTestIsCompletelySpecified(Mvf_Function_t *function);
117EXTERN boolean Mvf_FunctionTestIsConstant(Mvf_Function_t *function, int *constantValue);
118EXTERN boolean Mvf_FunctionTestIsNonDeterministicConstant(Mvf_Function_t *function);
119EXTERN mdd_t * Mvf_FunctionComputeDomain(Mvf_Function_t *function);
120EXTERN boolean Mvf_FunctionTestIsWellFormed(Mvf_Function_t *function);
121EXTERN boolean Mvf_FunctionTestIsEqualToFunction(Mvf_Function_t *function1, Mvf_Function_t *function2);
122EXTERN mdd_t * Mvf_FunctionsComputeEquivalentSet(Mvf_Function_t *function1, Mvf_Function_t *function2);
123EXTERN Mvf_Function_t * Mvf_FunctionCofactor(Mvf_Function_t * function, mdd_t * wrtMdd);
124EXTERN Mvf_Function_t * Mvf_FunctionMinimize(Mvf_Function_t *f, mdd_t *c);
125EXTERN long Mvf_FunctionArrayComputeNumBddNodes(array_t * functionArray);
126EXTERN long Mvf_FunctionComputeNumBddNodes(Mvf_Function_t * function);
127EXTERN int Mvf_FunctionFindFirstTrueComponent(Mvf_Function_t * function);
128EXTERN int Mvf_FunctionComputeHashValue(Mvf_Function_t * function);
129EXTERN array_t * Mvf_FunctionComputeSupport(Mvf_Function_t *outMvf, mdd_manager *mddMgr, int *value);
130
131
132/**AutomaticEnd***************************************************************/
133
134
135#endif /* _MVF */
136
137
138
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