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1256 lines
47 KiB
1256 lines
47 KiB
/**
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@file
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@ingroup cudd
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@brief Internal data structures of the CUDD package.
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@author Fabio Somenzi
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@copyright@parblock
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Copyright (c) 1995-2015, Regents of the University of Colorado
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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Neither the name of the University of Colorado nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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@endparblock
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*/
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#ifndef CUDD_INT_H_
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#define CUDD_INT_H_
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/*---------------------------------------------------------------------------*/
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/* Nested includes */
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/*---------------------------------------------------------------------------*/
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#include <math.h>
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#include "config.h"
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#include "st.h"
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#include "mtr.h"
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#include "epd.h"
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#include "cudd.h"
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/*---------------------------------------------------------------------------*/
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/* Constant declarations */
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/*---------------------------------------------------------------------------*/
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#define CUDD_VERSION PACKAGE_VERSION
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#define DD_MAXREF ((DdHalfWord) ~0)
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#define DD_DEFAULT_RESIZE 10 /* how many extra variables */
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/* should be added when resizing */
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#define DD_MEM_CHUNK 1022
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/* These definitions work for CUDD_VALUE_TYPE == double */
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#define DD_ONE_VAL (1.0)
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#define DD_ZERO_VAL (0.0)
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#define DD_EPSILON (1.0e-12)
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/* The definitions of +/- infinity in terms of HUGE_VAL work on
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** the DECstations and on many other combinations of OS/compiler.
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*/
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#ifdef HAVE_IEEE_754
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# define DD_PLUS_INF_VAL (HUGE_VAL)
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#else
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# define DD_PLUS_INF_VAL (10e301)
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# define DD_CRI_HI_MARK (10e150)
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# define DD_CRI_LO_MARK (-(DD_CRI_HI_MARK))
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#endif
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#define DD_MINUS_INF_VAL (-(DD_PLUS_INF_VAL))
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#define DD_NON_CONSTANT ((DdNode *) 1) /* for Cudd_bddIteConstant */
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/* Unique table and cache management constants. */
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#define DD_MAX_SUBTABLE_DENSITY 4 /* tells when to resize a subtable */
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/* gc when this percent are dead (measured w.r.t. slots, not keys)
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** The first limit (LO) applies normally. The second limit applies when
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** the package believes more space for the unique table (i.e., more dead
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** nodes) would improve performance, and the unique table is not already
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** too large. The third limit applies when memory is low.
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*/
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#define DD_GC_FRAC_LO DD_MAX_SUBTABLE_DENSITY * 0.25
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#define DD_GC_FRAC_HI DD_MAX_SUBTABLE_DENSITY * 1.0
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#define DD_GC_FRAC_MIN 0.2
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#define DD_MIN_HIT 30 /* resize cache when hit ratio
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above this percentage (default) */
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#define DD_MAX_LOOSE_FRACTION 5 /* 1 / (max fraction of memory used for
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unique table in fast growth mode) */
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#define DD_MAX_CACHE_FRACTION 3 /* 1 / (max fraction of memory used for
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computed table if resizing enabled) */
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#define DD_STASH_FRACTION 64 /* 1 / (fraction of memory set
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aside for emergencies) */
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#define DD_MAX_CACHE_TO_SLOTS_RATIO 4 /* used to limit the cache size */
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/* Variable ordering default parameter values. */
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#define DD_SIFT_MAX_VAR 1000
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#define DD_SIFT_MAX_SWAPS 2000000
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#define DD_DEFAULT_RECOMB 0
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#define DD_MAX_REORDER_GROWTH 1.2
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#define DD_FIRST_REORDER 4004 /* 4 for the constants */
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#define DD_DYN_RATIO 2 /* when to dynamically reorder */
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/* Primes for cache hash functions. */
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#define DD_P1 12582917
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#define DD_P2 4256249
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#define DD_P3 741457
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#define DD_P4 1618033999
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/* Cache tags for 3-operand operators. These tags are stored in the
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** least significant bits of the cache operand pointers according to
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** the following scheme. The tag consists of two hex digits. Both digits
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** must be even, so that they do not interfere with complementation bits.
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** The least significant one is stored in Bits 3:1 of the f operand in the
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** cache entry. Bit 1 is always 1, so that we can differentiate
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** three-operand operations from one- and two-operand operations.
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** Therefore, the least significant digit is one of {2,6,a,e}. The most
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** significant digit occupies Bits 3:1 of the g operand in the cache
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** entry. It can by any even digit between 0 and e. This gives a total
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** of 5 bits for the tag proper, which means a maximum of 32 three-operand
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** operations. */
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#define DD_ADD_ITE_TAG 0x02
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#define DD_BDD_AND_ABSTRACT_TAG 0x06
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#define DD_BDD_XOR_EXIST_ABSTRACT_TAG 0x0a
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#define DD_BDD_ITE_TAG 0x0e
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#define DD_ADD_BDD_DO_INTERVAL_TAG 0x22
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#define DD_BDD_CLIPPING_AND_ABSTRACT_UP_TAG 0x26
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#define DD_BDD_CLIPPING_AND_ABSTRACT_DOWN_TAG 0x2a
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#define DD_BDD_COMPOSE_RECUR_TAG 0x2e
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#define DD_ADD_COMPOSE_RECUR_TAG 0x42
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#define DD_ADD_NON_SIM_COMPOSE_TAG 0x46
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#define DD_EQUIV_DC_TAG 0x4a
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#define DD_ZDD_ITE_TAG 0x4e
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#define DD_ADD_ITE_CONSTANT_TAG 0x62
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#define DD_ADD_EVAL_CONST_TAG 0x66
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#define DD_BDD_ITE_CONSTANT_TAG 0x6a
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#define DD_ADD_OUT_SUM_TAG 0x6e
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#define DD_BDD_LEQ_UNLESS_TAG 0x82
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#define DD_ADD_TRIANGLE_TAG 0x86
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#define DD_BDD_MAX_EXP_TAG 0x8a
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#define DD_VARS_SYMM_BEFORE_TAG 0x8e
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#define DD_VARS_SYMM_BETWEEN_TAG 0xa2
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/* Generator constants. */
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#define CUDD_GEN_CUBES 0
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#define CUDD_GEN_PRIMES 1
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#define CUDD_GEN_NODES 2
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#define CUDD_GEN_ZDD_PATHS 3
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#define CUDD_GEN_EMPTY 0
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#define CUDD_GEN_NONEMPTY 1
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/**
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** @brief Maximum variable index.
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**
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** @details CUDD_MAXINDEX is defined in such a way that on 32-bit and
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** 64-bit machines one can cast an index to (int) without generating
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** a negative number.
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*/
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#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
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#define CUDD_MAXINDEX (((DdHalfWord) ~0) >> 1)
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#else
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#define CUDD_MAXINDEX ((DdHalfWord) ~0)
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#endif
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/**
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** @brief The index of constant nodes.
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**
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** @details This is a synonim for CUDD_MAXINDEX.
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*/
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#define CUDD_CONST_INDEX CUDD_MAXINDEX
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/**
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** @brief Size of the random number generator shuffle table.
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*/
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#define STAB_SIZE 64
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/**
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** @brief Mask for periodic check of termination and timeout.
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**
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** @see checkWhetherToGiveUp
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*/
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#define CUDD_CHECK_MASK 0x7ff
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/*---------------------------------------------------------------------------*/
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/* Type declarations */
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/*---------------------------------------------------------------------------*/
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/**
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@brief Type that is half the size of a pointer.
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*/
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#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
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typedef uint32_t DdHalfWord;
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#else
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typedef uint16_t DdHalfWord;
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#endif
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/**
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* @brief Signed integer that is the size of a pointer.
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*
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* @details The only platforms on which CUDD has been tested define
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* intptr_t and uintptr_t in inttypes.h and satisfy the condition
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*
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* sizeof(intptr_t) == sizeof(uintptr_t) == sizeof(void *)
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*
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* Neither of these is guaranteed by the C standard.
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*/
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typedef intptr_t ptrint;
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/**
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* @brief Unsigned integer that is the size of a pointer.
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*
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* @see ptrint
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*/
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typedef uintptr_t ptruint;
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typedef struct DdChildren DdChildren;
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typedef struct DdHook DdHook;
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typedef struct DdSubtable DdSubtable;
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typedef struct DdCache DdCache;
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typedef struct DdLocalCacheItem DdLocalCacheItem;
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typedef struct DdLocalCache DdLocalCache;
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typedef struct DdHashItem DdHashItem;
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typedef struct DdHashTable DdHashTable;
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typedef struct Move Move;
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typedef struct IndexKey IndexKey;
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typedef struct DdQueueItem DdQueueItem;
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typedef struct DdLevelQueue DdLevelQueue;
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/*---------------------------------------------------------------------------*/
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/* Stucture declarations */
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/*---------------------------------------------------------------------------*/
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/**
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* @brief The two children of a non-terminal node.
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*/
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struct DdChildren {
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struct DdNode *T; /**< then (true) child */
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struct DdNode *E; /**< else (false) child */
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};
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/**
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* @brief Decision diagram node.
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*/
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struct DdNode {
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DdHalfWord index; /**< variable index */
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DdHalfWord ref; /**< reference count */
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DdNode *next; /**< next pointer for unique table */
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union {
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CUDD_VALUE_TYPE value; /**< for constant (terminal) nodes */
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DdChildren kids; /**< for internal nodes */
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} type; /**< terminal or internal */
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};
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/**
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* @brief CUDD generator.
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*/
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struct DdGen {
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DdManager *manager;
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int type;
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int status;
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union {
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struct {
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int *cube;
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CUDD_VALUE_TYPE value;
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} cubes;
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struct {
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int *cube;
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DdNode *ub;
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} primes;
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struct {
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int size;
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} nodes;
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} gen;
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struct {
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int sp;
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DdNode **stack;
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} stack;
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DdNode *node;
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};
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/**
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** @brief CUDD hook
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**
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** Hooks in CUDD are functions that the application registers with the
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** manager so that they are called at appropriate times. The functions
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** are passed the manager as argument; they should return 1 if
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** successful and 0 otherwise.
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*/
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struct DdHook {
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DD_HFP f; /**< function to be called */
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struct DdHook *next; /**< next element in the list */
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};
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/**
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* @brief Generic local cache item.
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*/
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struct DdLocalCacheItem {
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DdNode *value;
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#ifdef DD_CACHE_PROFILE
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ptrint count;
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#endif
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DdNode *key[1];
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};
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/**
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* @brief Local cache.
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*/
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struct DdLocalCache {
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DdLocalCacheItem *item;
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unsigned int itemsize;
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unsigned int keysize;
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unsigned int slots;
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int shift;
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double lookUps;
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double minHit;
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double hits;
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unsigned int maxslots;
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DdManager *manager;
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struct DdLocalCache *next;
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};
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/**
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* @brief Local hash table item.
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*/
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struct DdHashItem {
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struct DdHashItem *next; /**< collision list link */
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ptrint count; /**< reference count of item */
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DdNode *value; /**< value %DD */
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DdNode *key[1]; /**< key pointers */
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};
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/**
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* @brief Local hash table.
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*/
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struct DdHashTable {
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unsigned int keysize; /**< number of pointers in the key */
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unsigned int itemsize; /**< size of hash table item in bytes */
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DdHashItem **bucket; /**< array of buckets */
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DdHashItem *nextFree; /**< item free list */
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DdHashItem **memoryList; /**< list of memory blocks for items */
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unsigned int numBuckets; /**< number of buckets in array */
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int shift; /**< shift used in hash function */
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unsigned int size; /**< number of items stored in table */
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unsigned int maxsize; /**< threshold for table resizing */
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DdManager *manager; /**< %DD manager */
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};
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/**
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* @brief Computed table.
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*/
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struct DdCache {
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DdNode *f,*g; /**< DDs */
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ptruint h; /**< either operator or %DD */
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DdNode *data; /**< already constructed %DD */
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#ifdef DD_CACHE_PROFILE
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ptrint count; /**< statistical counter */
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#endif
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};
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/**
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* @brief Subtable for one index.
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*/
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struct DdSubtable {
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DdNode **nodelist; /**< hash table */
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int shift; /**< shift for hash function */
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unsigned int slots; /**< size of the hash table */
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unsigned int keys; /**< number of nodes stored in this table */
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unsigned int maxKeys; /**< slots * DD_MAX_SUBTABLE_DENSITY */
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unsigned int dead; /**< number of dead nodes in this table */
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unsigned int next; /**< index of next variable in group */
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int bindVar; /**< flag to bind this variable to its level */
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/* Fields for lazy sifting. */
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Cudd_VariableType varType; /**< variable type (ps, ns, pi) */
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int pairIndex; /**< corresponding variable index (ps <-> ns) */
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int varHandled; /**< flag: 1 means variable is already handled */
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Cudd_LazyGroupType varToBeGrouped; /**< tells what grouping to apply */
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};
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/**
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* @brief Specialized %DD symbol table.
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*/
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struct DdManager {
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/* Constants */
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DdNode sentinel; /**< for collision lists */
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DdNode *one; /**< constant 1 */
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DdNode *zero; /**< constant 0 */
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DdNode *plusinfinity; /**< plus infinity */
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DdNode *minusinfinity; /**< minus infinity */
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DdNode *background; /**< background value */
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/* Computed Table */
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DdCache *acache; /**< address of allocated memory for cache */
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DdCache *cache; /**< the cache-based computed table */
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unsigned int cacheSlots; /**< total number of cache entries */
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int cacheShift; /**< shift value for cache hash function */
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double cacheMisses; /**< number of cache misses (since resizing) */
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double cacheHits; /**< number of cache hits (since resizing) */
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double minHit; /**< hit percentage above which to resize */
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int cacheSlack; /**< slots still available for resizing */
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unsigned int maxCacheHard; /**< hard limit for cache size */
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/* Unique Table */
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int size; /**< number of unique subtables */
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int sizeZ; /**< for %ZDD */
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int maxSize; /**< max number of subtables before resizing */
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int maxSizeZ; /**< for %ZDD */
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DdSubtable *subtables; /**< array of unique subtables */
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DdSubtable *subtableZ; /**< for %ZDD */
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DdSubtable constants; /**< unique subtable for the constants */
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unsigned int slots; /**< total number of hash buckets */
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unsigned int keys; /**< total number of %BDD and %ADD nodes */
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unsigned int keysZ; /**< total number of %ZDD nodes */
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unsigned int dead; /**< total number of dead %BDD and %ADD nodes */
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unsigned int deadZ; /**< total number of dead %ZDD nodes */
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unsigned int maxLive; /**< maximum number of live nodes */
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unsigned int minDead; /**< do not GC if fewer than these dead */
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int gcEnabled; /**< gc is enabled */
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double gcFrac; /**< gc when this fraction is dead */
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unsigned int looseUpTo; /**< slow growth beyond this limit */
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/**< (measured w.r.t. slots, not keys) */
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unsigned int initSlots; /**< initial size of a subtable */
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DdNode **stack; /**< stack for iterative procedures */
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double allocated; /**< number of nodes allocated */
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/**< (not during reordering) */
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double reclaimed; /**< number of nodes brought back from the dead */
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int *perm; /**< current variable perm. (index to level) */
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int *permZ; /**< for %ZDD */
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int *invperm; /**< current inv. var. perm. (level to index) */
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int *invpermZ; /**< for %ZDD */
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DdNode **vars; /**< projection functions */
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int *map; /**< variable map for fast swap */
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DdNode **univ; /**< %ZDD 1 for each variable */
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unsigned int isolated; /**< isolated projection functions */
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unsigned int originalSize; /**< used by lazy sifting */
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int linearSize; /**< number of rows and columns of linear */
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ptruint *interact; /**< interacting variable matrix */
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ptruint *linear; /**< linear transform matrix */
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/* Memory Management */
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DdNode **memoryList; /**< memory manager for symbol table */
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DdNode *nextFree; /**< list of free nodes */
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char *stash; /**< memory reserve */
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#ifndef DD_NO_DEATH_ROW
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DdNode **deathRow; /**< queue for dereferencing */
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int deathRowDepth; /**< number of slots in the queue */
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int nextDead; /**< index in the queue */
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unsigned deadMask; /**< mask for circular index update */
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#endif
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/* General Parameters */
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CUDD_VALUE_TYPE epsilon; /**< tolerance on comparisons */
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/* Dynamic Reordering Parameters */
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int reordered; /**< flag set at the end of reordering */
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unsigned int reorderings; /**< number of calls to Cudd_ReduceHeap */
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unsigned int maxReorderings;/**< maximum number of calls to Cudd_ReduceHeap */
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int siftMaxVar; /**< maximum number of vars sifted */
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int siftMaxSwap; /**< maximum number of swaps per sifting */
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int ddTotalNumberSwapping; /**< number of %BDD/%ADD swaps completed */
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int zddTotalNumberSwapping; /**< number of %ZDD swaps completed */
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int reordCycle; /**< how often to apply alternate threshold */
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double maxGrowth; /**< maximum growth during reordering */
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double maxGrowthAlt; /**< alternate maximum growth for reordering */
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int autoDyn; /**< automatic dynamic reordering flag (BDD) */
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int autoDynZ; /**< automatic dynamic reordering flag (ZDD) */
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Cudd_ReorderingType autoMethod; /**< default reordering method */
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Cudd_ReorderingType autoMethodZ; /**< default reordering method (ZDD) */
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int realign; /**< realign %ZDD order after %BDD reordering */
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int realignZ; /**< realign %BDD order after %ZDD reordering */
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unsigned int nextDyn; /**< reorder if this size is reached */
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unsigned int countDead; /**< if 0, count deads to trigger reordering */
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MtrNode *tree; /**< variable group tree (BDD) */
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MtrNode *treeZ; /**< variable group tree (ZDD) */
|
|
Cudd_AggregationType groupcheck; /**< used during group sifting */
|
|
int recomb; /**< used during group sifting */
|
|
int symmviolation; /**< used during group sifting */
|
|
int arcviolation; /**< used during group sifting */
|
|
int populationSize; /**< population size for GA */
|
|
int numberXovers; /**< number of crossovers for GA */
|
|
unsigned int randomizeOrder; /**< perturb the next reordering threshold */
|
|
DdLocalCache *localCaches; /**< local caches currently in existence */
|
|
void *hooks; /**< application-specific field (used by vis) */
|
|
DdHook *preGCHook; /**< hooks to be called before GC */
|
|
DdHook *postGCHook; /**< hooks to be called after GC */
|
|
DdHook *preReorderingHook; /**< hooks to be called before reordering */
|
|
DdHook *postReorderingHook; /**< hooks to be called after reordering */
|
|
FILE *out; /**< stdout for this manager */
|
|
FILE *err; /**< stderr for this manager */
|
|
Cudd_ErrorType errorCode; /**< info on last error */
|
|
unsigned long startTime; /**< start time in milliseconds */
|
|
unsigned long timeLimit; /**< CPU time limit */
|
|
DD_THFP terminationCallback; /**< termination callback */
|
|
void * tcbArg; /**< second argument passed to termination handler */
|
|
DD_OOMFP outOfMemCallback; /**< out-of-memory callback */
|
|
DD_TOHFP timeoutHandler; /**< timeout handler */
|
|
void * tohArg; /**< second argument passed to timeout handler */
|
|
/* Statistical counters. */
|
|
size_t memused; /**< total memory allocated for the manager */
|
|
size_t maxmem; /**< target maximum memory */
|
|
size_t maxmemhard; /**< hard limit for maximum memory */
|
|
int garbageCollections; /**< number of garbage collections */
|
|
unsigned long GCTime; /**< total time spent in garbage collection */
|
|
unsigned long reordTime; /**< total time spent in reordering */
|
|
double totCachehits; /**< total number of cache hits */
|
|
double totCacheMisses; /**< total number of cache misses */
|
|
double cachecollisions; /**< number of cache collisions */
|
|
double cacheinserts; /**< number of cache insertions */
|
|
double cacheLastInserts; /**< insertions at the last cache resizing */
|
|
double cachedeletions; /**< number of deletions during garbage coll. */
|
|
unsigned int peakLiveNodes; /**< maximum number of live nodes */
|
|
/* Random number generator. */
|
|
int32_t cuddRand; /**< state of the random number generator */
|
|
int32_t cuddRand2; /**< state of the random number generator */
|
|
int32_t shuffleSelect; /**< state of the random number generator */
|
|
int32_t shuffleTable[STAB_SIZE]; /**< state of the random number generator */
|
|
#ifdef DD_STATS
|
|
double nodesFreed; /**< number of nodes returned to the free list */
|
|
double nodesDropped; /**< number of nodes killed by dereferencing */
|
|
int totalNISwaps; /**< number of non-interacting (cheap) swaps */
|
|
int extsymmcalls; /**< number of calls to symmetry check fn */
|
|
int extsymm; /**< number of successful symmetry checks */
|
|
int secdiffcalls; /**< number of calls to second difference fn */
|
|
int secdiff; /**< number of successful second diff. checks */
|
|
int secdiffmisfire; /**< number of misfired second diff. checks */
|
|
int tosses; /**< number of coin tosses in annealing */
|
|
int acceptances; /**< number of acceptances in annealing */
|
|
int totalShuffles; /**< number of shuffles in exact reordering */
|
|
int totalNumberLinearTr; /**< number of linear transformations */
|
|
int num_calls; /**< should equal 2n-1 (n is the # of nodes) */
|
|
#endif
|
|
#ifdef DD_UNIQUE_PROFILE
|
|
double uniqueLookUps; /**< number of unique table lookups */
|
|
double uniqueLinks; /**< total distance traveled in coll. chains */
|
|
#endif
|
|
#ifdef DD_COUNT
|
|
double recursiveCalls; /**< number of recursive calls */
|
|
#ifdef DD_STATS
|
|
double nextSample; /**< when to write next line of stats */
|
|
#endif
|
|
double swapSteps; /**< number of elementary reordering steps */
|
|
#endif
|
|
#ifdef DD_DEBUG
|
|
int addPermuteRecurHits; /**< debug variable for variable permutation */
|
|
int bddPermuteRecurHits; /**< debug variable for variable permutation */
|
|
int bddVectorComposeHits; /**< debug variable for vector composition */
|
|
int addVectorComposeHits; /**< debug variable for vector composition */
|
|
int addGeneralVectorComposeHits; /**< debug var. for vector composition */
|
|
int enableExtraDebug; /**< deposit a 1 here to enable more debugging */
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* @brief Reordering move record.
|
|
*/
|
|
struct Move {
|
|
DdHalfWord x;
|
|
DdHalfWord y;
|
|
unsigned int flags;
|
|
int size;
|
|
struct Move *next;
|
|
};
|
|
|
|
/**
|
|
* @brief Used to sort variables for reordering.
|
|
*/
|
|
struct IndexKey {
|
|
int index;
|
|
int keys;
|
|
};
|
|
|
|
/**
|
|
* @brief Generic level queue item.
|
|
*/
|
|
struct DdQueueItem {
|
|
struct DdQueueItem *next;
|
|
struct DdQueueItem *cnext;
|
|
void *key;
|
|
};
|
|
|
|
/**
|
|
* @brief Level queue.
|
|
*/
|
|
struct DdLevelQueue {
|
|
void *first;
|
|
DdQueueItem **last;
|
|
DdQueueItem *freelist;
|
|
DdQueueItem **buckets;
|
|
int levels;
|
|
int itemsize;
|
|
int size;
|
|
int maxsize;
|
|
int numBuckets;
|
|
int shift;
|
|
DdManager *manager;
|
|
};
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Variable declarations */
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Macro declarations */
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
@brief Adds node to the head of the free list.
|
|
|
|
@details Does not deallocate memory chunks that become free. This
|
|
function is also used by the dynamic reordering functions.
|
|
|
|
@sideeffect None
|
|
|
|
@see cuddAllocNode cuddDynamicAllocNode cuddDeallocMove
|
|
|
|
*/
|
|
#define cuddDeallocNode(unique,node) \
|
|
(node)->next = (unique)->nextFree; \
|
|
(unique)->nextFree = node;
|
|
|
|
/**
|
|
@brief Adds node to the head of the free list.
|
|
|
|
@details Does not deallocate memory chunks that become free. This
|
|
function is also used by the dynamic reordering functions.
|
|
|
|
@sideeffect None
|
|
|
|
@see cuddDeallocNode cuddDynamicAllocNode
|
|
|
|
*/
|
|
#define cuddDeallocMove(unique,node) \
|
|
((DdNode *)(node))->ref = 0; \
|
|
((DdNode *)(node))->next = (unique)->nextFree; \
|
|
(unique)->nextFree = (DdNode *)(node);
|
|
|
|
|
|
/**
|
|
@brief Increases the reference count of a node, if it is not
|
|
saturated.
|
|
|
|
@details This being a macro, it is faster than Cudd_Ref, but it
|
|
cannot be used in constructs like cuddRef(a = b()).
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_Ref
|
|
|
|
*/
|
|
#define cuddRef(n) cuddSatInc(Cudd_Regular(n)->ref)
|
|
|
|
|
|
/**
|
|
@brief Decreases the reference count of a node, if it is not
|
|
saturated.
|
|
|
|
@details It is primarily used in recursive procedures to decrease
|
|
the ref count of a result node before returning it. This
|
|
accomplishes the goal of removing the protection applied by a
|
|
previous cuddRef. This being a macro, it is faster than Cudd_Deref,
|
|
but it cannot be used in constructs like cuddDeref(a = b()).
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_Deref
|
|
|
|
*/
|
|
#define cuddDeref(n) cuddSatDec(Cudd_Regular(n)->ref)
|
|
|
|
|
|
/**
|
|
@brief Returns 1 if the node is a constant node.
|
|
|
|
@details Returns 1 if the node is a constant node (rather than an
|
|
internal node). All constant nodes have the same index
|
|
(CUDD_CONST_INDEX). The pointer passed to Cudd_IsConstantInt may be either
|
|
regular or complemented.
|
|
|
|
@sideeffect none
|
|
|
|
@see cuddIsConstant Cudd_IsConstant
|
|
|
|
*/
|
|
#define Cudd_IsConstantInt(node) ((Cudd_Regular(node))->index == CUDD_CONST_INDEX)
|
|
|
|
|
|
/**
|
|
@brief Returns 1 if the node is a constant node.
|
|
|
|
@details Returns 1 if the node is a constant node (rather than an
|
|
internal node). All constant nodes have the same index
|
|
(CUDD_CONST_INDEX). The pointer passed to cuddIsConstant must be regular.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_IsConstant Cudd_IsConstantInt
|
|
|
|
*/
|
|
#define cuddIsConstant(node) ((node)->index == CUDD_CONST_INDEX)
|
|
|
|
|
|
/**
|
|
@brief Returns the then child of an internal node.
|
|
|
|
@details If <code>node</code> is a constant node, the result is
|
|
unpredictable. The pointer passed to cuddT must be regular.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_T
|
|
|
|
*/
|
|
#define cuddT(node) ((node)->type.kids.T)
|
|
|
|
|
|
/**
|
|
@brief Returns the else child of an internal node.
|
|
|
|
@details If <code>node</code> is a constant node, the result is
|
|
unpredictable. The pointer passed to cuddE must be regular.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_E
|
|
|
|
*/
|
|
#define cuddE(node) ((node)->type.kids.E)
|
|
|
|
|
|
/**
|
|
@brief Returns the value of a constant node.
|
|
|
|
@details If <code>node</code> is an internal node, the result is
|
|
unpredictable. The pointer passed to cuddV must be regular.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_V
|
|
|
|
*/
|
|
#define cuddV(node) ((node)->type.value)
|
|
|
|
|
|
/**
|
|
@brief Finds the current position of variable index in the
|
|
order.
|
|
|
|
@details This macro duplicates the functionality of Cudd_ReadPerm,
|
|
but it does not check for out-of-bounds indices and it is more
|
|
efficient.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_ReadPerm
|
|
|
|
*/
|
|
#define cuddI(dd,index) (((index)==CUDD_CONST_INDEX)?(int)(index):(dd)->perm[(index)])
|
|
|
|
|
|
/**
|
|
@brief Finds the current position of %ZDD variable index in the
|
|
order.
|
|
|
|
@details This macro duplicates the functionality of
|
|
Cudd_ReadPermZdd, but it does not check for out-of-bounds indices
|
|
and it is more efficient.
|
|
|
|
@sideeffect none
|
|
|
|
@see Cudd_ReadPermZdd
|
|
|
|
*/
|
|
#define cuddIZ(dd,index) (((index)==CUDD_CONST_INDEX)?(int)(index):(dd)->permZ[(index)])
|
|
|
|
|
|
/**
|
|
@brief Hash function for the unique table.
|
|
|
|
@details
|
|
|
|
@sideeffect none
|
|
|
|
@see ddCHash ddCHash2
|
|
|
|
*/
|
|
#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
|
|
#define ddHash(f,g,s) \
|
|
((((unsigned)(ptruint)(f) * DD_P1 + \
|
|
(unsigned)(ptruint)(g)) * DD_P2) >> (s))
|
|
#else
|
|
#define ddHash(f,g,s) \
|
|
((((unsigned)(f) * DD_P1 + (unsigned)(g)) * DD_P2) >> (s))
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Hash function for the cache.
|
|
|
|
@sideeffect none
|
|
|
|
@see ddHash ddCHash2
|
|
|
|
*/
|
|
#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
|
|
#define ddCHash(o,f,g,h,s) \
|
|
((((((unsigned)(ptruint)(f) + (unsigned)(ptruint)(o)) * DD_P1 + \
|
|
(unsigned)(ptruint)(g)) * DD_P2 + \
|
|
(unsigned)(ptruint)(h)) * DD_P3) >> (s))
|
|
#else
|
|
#define ddCHash(o,f,g,h,s) \
|
|
((((((unsigned)(f) + (unsigned)(o)) * DD_P1 + (unsigned)(g)) * DD_P2 + \
|
|
(unsigned)(h)) * DD_P3) >> (s))
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Hash function for the cache for functions with two operands.
|
|
|
|
@sideeffect none
|
|
|
|
@see ddHash ddCHash
|
|
|
|
*/
|
|
#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
|
|
#define ddCHash2(o,f,g,s) \
|
|
(((((unsigned)(ptruint)(f) + (unsigned)(ptruint)(o)) * DD_P1 + \
|
|
(unsigned)(ptruint)(g)) * DD_P2) >> (s))
|
|
#else
|
|
#define ddCHash2(o,f,g,s) \
|
|
(((((unsigned)(f) + (unsigned)(o)) * DD_P1 + (unsigned)(g)) * DD_P2) >> (s))
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Clears the 4 least significant bits of a pointer.
|
|
|
|
@sideeffect none
|
|
|
|
*/
|
|
#define cuddClean(p) ((DdNode *)((ptruint)(p) & ~ (ptruint) 0xf))
|
|
|
|
|
|
/**
|
|
@brief Computes the minimum of two numbers.
|
|
|
|
@sideeffect none
|
|
|
|
@see ddMax
|
|
|
|
*/
|
|
#define ddMin(x,y) (((y) < (x)) ? (y) : (x))
|
|
|
|
|
|
/**
|
|
@brief Computes the maximum of two numbers.
|
|
|
|
@sideeffect none
|
|
|
|
@see ddMin
|
|
|
|
*/
|
|
#define ddMax(x,y) (((y) > (x)) ? (y) : (x))
|
|
|
|
|
|
/**
|
|
@brief Computes the absolute value of a number.
|
|
|
|
@sideeffect none
|
|
|
|
*/
|
|
#define ddAbs(x) (((x)<0) ? -(x) : (x))
|
|
|
|
|
|
/**
|
|
@brief Returns 1 if the absolute value of the difference of the two
|
|
arguments x and y is less than e.
|
|
|
|
@sideeffect none
|
|
|
|
*/
|
|
#define ddEqualVal(x,y,e) (ddAbs((x)-(y))<(e))
|
|
|
|
|
|
/**
|
|
@brief Saturating increment operator.
|
|
|
|
@details Saturation is only necessary on 32-bit machines, where the
|
|
reference count is only 16-bit wide.
|
|
|
|
@sideeffect none
|
|
|
|
@see cuddSatDec
|
|
|
|
*/
|
|
#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
|
|
#define cuddSatInc(x) ((x)++)
|
|
#else
|
|
#define cuddSatInc(x) ((x) += (x) != (DdHalfWord)DD_MAXREF)
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Saturating decrement operator.
|
|
|
|
@details Saturation is only necessary on 32-bit machines, where the
|
|
reference count is only 16-bit wide.
|
|
|
|
@sideeffect none
|
|
|
|
@see cuddSatInc
|
|
|
|
*/
|
|
#if SIZEOF_VOID_P == 8 && SIZEOF_INT == 4
|
|
#define cuddSatDec(x) ((x)--)
|
|
#else
|
|
#define cuddSatDec(x) ((x) -= (x) != (DdHalfWord)DD_MAXREF)
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Returns the constant 1 node.
|
|
|
|
@sideeffect none
|
|
|
|
@see DD_ZERO DD_PLUS_INFINITY DD_MINUS_INFINITY
|
|
|
|
*/
|
|
#define DD_ONE(dd) ((dd)->one)
|
|
|
|
|
|
/**
|
|
@brief Returns the arithmetic 0 constant node.
|
|
|
|
@details This is different from the logical zero. The latter is
|
|
obtained by Cudd_Not(DD_ONE(dd)).
|
|
|
|
@sideeffect none
|
|
|
|
@see DD_ONE Cudd_Not DD_PLUS_INFINITY DD_MINUS_INFINITY
|
|
|
|
*/
|
|
#define DD_ZERO(dd) ((dd)->zero)
|
|
|
|
|
|
/**
|
|
@brief Returns the plus infinity constant node.
|
|
|
|
@sideeffect none
|
|
|
|
@see DD_ONE DD_ZERO DD_MINUS_INFINITY
|
|
|
|
*/
|
|
#define DD_PLUS_INFINITY(dd) ((dd)->plusinfinity)
|
|
|
|
|
|
/**
|
|
@brief Returns the minus infinity constant node.
|
|
|
|
@sideeffect none
|
|
|
|
@see DD_ONE DD_ZERO DD_PLUS_INFINITY
|
|
|
|
*/
|
|
#define DD_MINUS_INFINITY(dd) ((dd)->minusinfinity)
|
|
|
|
|
|
/**
|
|
@brief Enforces DD_MINUS_INF_VAL <= x <= DD_PLUS_INF_VAL.
|
|
|
|
@details Furthermore, if x <= DD_MINUS_INF_VAL/2, x is set to
|
|
DD_MINUS_INF_VAL. Similarly, if DD_PLUS_INF_VAL/2 <= x, x is set to
|
|
DD_PLUS_INF_VAL. Normally this macro is a NOOP. However, if
|
|
HAVE_IEEE_754 is not defined, it makes sure that a value does not
|
|
get larger than infinity in absolute value, and once it gets to
|
|
infinity, stays there. If the value overflows before this macro is
|
|
applied, no recovery is possible.
|
|
|
|
@sideeffect none
|
|
|
|
*/
|
|
#ifdef HAVE_IEEE_754
|
|
#define cuddAdjust(x)
|
|
#else
|
|
#define cuddAdjust(x) ((x) = ((x) >= DD_CRI_HI_MARK) ? DD_PLUS_INF_VAL : (((x) <= DD_CRI_LO_MARK) ? DD_MINUS_INF_VAL : (x)))
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Outputs a line of stats.
|
|
|
|
@details Outputs a line of stats if DD_COUNT and DD_STATS are
|
|
defined. Increments the number of recursive calls if DD_COUNT is
|
|
defined.
|
|
|
|
@sideeffect None
|
|
|
|
*/
|
|
#ifdef DD_COUNT
|
|
#ifdef DD_STATS
|
|
#define statLine(dd) \
|
|
do { \
|
|
(dd)->recursiveCalls++; \
|
|
if ((dd)->recursiveCalls == (dd)->nextSample) { \
|
|
(void) fprintf((dd)->err, \
|
|
"@%.0f: %u nodes %u live %.0f dropped" \
|
|
" %.0f reclaimed\n", \
|
|
(dd)->recursiveCalls, (dd)->keys, \
|
|
(dd)->keys - (dd)->dead, \
|
|
(dd)->nodesDropped, (dd)->reclaimed); \
|
|
(dd)->nextSample += 250000;} \
|
|
} while (0)
|
|
#else
|
|
#define statLine(dd) (dd)->recursiveCalls++
|
|
#endif
|
|
#else
|
|
#define statLine(dd)
|
|
#endif
|
|
|
|
|
|
/**
|
|
@brief Checks for termination or timeout.
|
|
*/
|
|
#define checkWhetherToGiveUp(dd) \
|
|
do { \
|
|
if (((int64_t) CUDD_CHECK_MASK & (int64_t) (dd)->cacheMisses) == 0) { \
|
|
if ((dd)->terminationCallback != NULL && \
|
|
(dd)->terminationCallback((dd)->tcbArg)) { \
|
|
(dd)->errorCode = CUDD_TERMINATION; \
|
|
return(NULL); \
|
|
} \
|
|
if (util_cpu_time() - (dd)->startTime > (dd)->timeLimit) { \
|
|
(dd)->errorCode = CUDD_TIMEOUT_EXPIRED; \
|
|
return(NULL); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
|
|
/** \cond */
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/*---------------------------------------------------------------------------*/
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/* Function prototypes */
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/*---------------------------------------------------------------------------*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern DdNode * cuddAddExistAbstractRecur(DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddUnivAbstractRecur(DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddOrAbstractRecur(DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddMinAbstractRecur (DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddMinExcept0AbstractRecur (DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddMaxAbstractRecur (DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddAddMinAbstractRepresentativeRecur(DdManager * manager, DdNode * f, DdNode * cube);
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extern DdNode * cuddAddMaxAbstractRepresentativeRecur(DdManager * manager, DdNode * f, DdNode * cube);
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extern DdNode * cuddAddApplyRecur(DdManager *dd, DdNode * (*)(DdManager *, DdNode **, DdNode **), DdNode *f, DdNode *g);
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extern DdNode * cuddAddToBddApplyRecur(DdManager *dd, DdNode * (*)(DdManager *, DdNode **, DdNode **), DdNode *f, DdNode *g);
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extern DdNode * cuddAddMonadicApplyRecur(DdManager * dd, DdNode * (*op)(DdManager *, DdNode *), DdNode * f);
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extern DdNode * cuddAddScalarInverseRecur(DdManager *dd, DdNode *f, DdNode *epsilon);
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extern DdNode * cuddAddIteRecur(DdManager *dd, DdNode *f, DdNode *g, DdNode *h);
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extern DdNode * cuddAddCmplRecur(DdManager *dd, DdNode *f);
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extern DdNode * cuddAddNegateRecur(DdManager *dd, DdNode *f);
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extern DdNode * cuddAddRoundOffRecur(DdManager *dd, DdNode *f, double trunc);
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extern DdNode * cuddUnderApprox(DdManager *dd, DdNode *f, int numVars, int threshold, int safe, double quality);
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extern DdNode * cuddRemapUnderApprox(DdManager *dd, DdNode *f, int numVars, int threshold, double quality);
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extern DdNode * cuddBiasedUnderApprox(DdManager *dd, DdNode *f, DdNode *b, int numVars, int threshold, double quality1, double quality0);
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extern DdNode * cuddBddAndAbstractRecur(DdManager *manager, DdNode *f, DdNode *g, DdNode *cube);
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extern int cuddAnnealing(DdManager *table, int lower, int upper);
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extern DdNode * cuddBddExistAbstractRecur(DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddBddExistAbstractRepresentativeRecur(DdManager *manager, DdNode *f, DdNode *cube);
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extern DdNode * cuddBddXorExistAbstractRecur(DdManager *manager, DdNode *f, DdNode *g, DdNode *cube);
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extern DdNode * cuddBddBooleanDiffRecur(DdManager *manager, DdNode *f, DdNode *var);
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extern DdNode * cuddBddIteRecur(DdManager *dd, DdNode *f, DdNode *g, DdNode *h);
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extern DdNode * cuddBddIntersectRecur(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddBddAndRecur(DdManager *manager, DdNode *f, DdNode *g);
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extern DdNode * cuddBddXorRecur(DdManager *manager, DdNode *f, DdNode *g);
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extern DdNode * cuddBddTransfer(DdManager *ddS, DdManager *ddD, DdNode *f);
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extern DdNode * cuddAddBddDoPattern(DdManager *dd, DdNode *f);
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extern int cuddInitCache(DdManager *unique, unsigned int cacheSize, unsigned int maxCacheSize);
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extern void cuddCacheInsert(DdManager *table, ptruint op, DdNode *f, DdNode *g, DdNode *h, DdNode *data);
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extern void cuddCacheInsert2(DdManager *table, DdNode * (*)(DdManager *, DdNode *, DdNode *), DdNode *f, DdNode *g, DdNode *data);
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extern void cuddCacheInsert1(DdManager *table, DdNode * (*)(DdManager *, DdNode *), DdNode *f, DdNode *data);
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extern DdNode * cuddCacheLookup(DdManager *table, ptruint op, DdNode *f, DdNode *g, DdNode *h);
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extern DdNode * cuddCacheLookupZdd(DdManager *table, ptruint op, DdNode *f, DdNode *g, DdNode *h);
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extern DdNode * cuddCacheLookup2(DdManager *table, DdNode * (*)(DdManager *, DdNode *, DdNode *), DdNode *f, DdNode *g);
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extern DdNode * cuddCacheLookup1(DdManager *table, DdNode * (*)(DdManager *, DdNode *), DdNode *f);
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extern DdNode * cuddCacheLookup2Zdd(DdManager *table, DdNode * (*)(DdManager *, DdNode *, DdNode *), DdNode *f, DdNode *g);
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extern DdNode * cuddCacheLookup1Zdd(DdManager *table, DdNode * (*)(DdManager *, DdNode *), DdNode *f);
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extern DdNode * cuddConstantLookup(DdManager *table, ptruint op, DdNode *f, DdNode *g, DdNode *h);
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extern int cuddCacheProfile(DdManager *table, FILE *fp);
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extern void cuddCacheResize(DdManager *table);
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extern void cuddCacheFlush(DdManager *table);
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extern int cuddComputeFloorLog2(unsigned int value);
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extern int cuddHeapProfile(DdManager *dd);
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extern void cuddPrintNode(DdNode *f, FILE *fp);
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extern void cuddPrintVarGroups(DdManager * dd, MtrNode * root, int zdd, int silent);
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extern DdNode * cuddBddClippingAnd(DdManager *dd, DdNode *f, DdNode *g, int maxDepth, int direction);
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extern DdNode * cuddBddClippingAndAbstract(DdManager *dd, DdNode *f, DdNode *g, DdNode *cube, int maxDepth, int direction);
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extern void cuddGetBranches(DdNode *g, DdNode **g1, DdNode **g0);
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extern DdNode * cuddCofactorRecur(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddBddComposeRecur(DdManager *dd, DdNode *f, DdNode *g, DdNode *proj);
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extern DdNode * cuddAddComposeRecur(DdManager *dd, DdNode *f, DdNode *g, DdNode *proj);
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extern int cuddExact(DdManager *table, int lower, int upper);
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extern DdNode * cuddBddConstrainRecur(DdManager *dd, DdNode *f, DdNode *c);
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extern DdNode * cuddBddRestrictRecur(DdManager *dd, DdNode *f, DdNode *c);
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extern DdNode * cuddBddNPAndRecur(DdManager *dd, DdNode *f, DdNode *c);
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extern DdNode * cuddAddConstrainRecur(DdManager *dd, DdNode *f, DdNode *c);
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extern DdNode * cuddAddRestrictRecur(DdManager *dd, DdNode *f, DdNode *c);
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extern DdNode * cuddBddLICompaction(DdManager *dd, DdNode *f, DdNode *c);
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extern int cuddGa(DdManager *table, int lower, int upper);
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extern int cuddTreeSifting(DdManager *table, Cudd_ReorderingType method);
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extern int cuddZddInitUniv(DdManager *zdd);
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extern void cuddZddFreeUniv(DdManager *zdd);
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extern void cuddSetInteract(DdManager *table, int x, int y);
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extern int cuddTestInteract(DdManager *table, int x, int y);
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extern int cuddInitInteract(DdManager *table);
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extern DdLocalCache * cuddLocalCacheInit(DdManager *manager, unsigned int keySize, unsigned int cacheSize, unsigned int maxCacheSize);
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extern void cuddLocalCacheQuit(DdLocalCache *cache);
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extern void cuddLocalCacheInsert(DdLocalCache *cache, DdNodePtr *key, DdNode *value);
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extern DdNode * cuddLocalCacheLookup(DdLocalCache *cache, DdNodePtr *key);
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extern void cuddLocalCacheClearDead(DdManager *manager);
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extern int cuddIsInDeathRow(DdManager *dd, DdNode *f);
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extern int cuddTimesInDeathRow(DdManager *dd, DdNode *f);
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extern void cuddLocalCacheClearAll(DdManager *manager);
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#ifdef DD_CACHE_PROFILE
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extern int cuddLocalCacheProfile(DdLocalCache *cache);
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#endif
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extern DdHashTable * cuddHashTableInit(DdManager *manager, unsigned int keySize, unsigned int initSize);
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extern void cuddHashTableQuit(DdHashTable *hash);
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extern void cuddHashTableGenericQuit(DdHashTable *hash);
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extern int cuddHashTableInsert(DdHashTable *hash, DdNodePtr *key, DdNode *value, ptrint count);
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extern DdNode * cuddHashTableLookup(DdHashTable *hash, DdNodePtr *key);
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extern int cuddHashTableInsert1(DdHashTable *hash, DdNode *f, DdNode *value, ptrint count);
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extern DdNode * cuddHashTableLookup1(DdHashTable *hash, DdNode *f);
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extern int cuddHashTableInsert2(DdHashTable *hash, DdNode *f, DdNode *g, DdNode *value, ptrint count);
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extern DdNode * cuddHashTableLookup2(DdHashTable *hash, DdNode *f, DdNode *g);
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extern int cuddHashTableInsert3(DdHashTable *hash, DdNode *f, DdNode *g, DdNode *h, DdNode *value, ptrint count);
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extern DdNode * cuddHashTableLookup3(DdHashTable *hash, DdNode *f, DdNode *g, DdNode *h);
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extern int cuddHashTableGenericInsert(DdHashTable * hash, DdNode * f, void * value);
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extern void * cuddHashTableGenericLookup(DdHashTable * hash, DdNode * f);
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extern DdLevelQueue * cuddLevelQueueInit(int levels, int itemSize, int numBuckets, DdManager * manager);
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extern void cuddLevelQueueQuit(DdLevelQueue *queue);
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extern void * cuddLevelQueueFirst(DdLevelQueue * queue, void * key, int level);
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extern void * cuddLevelQueueEnqueue(DdLevelQueue *queue, void *key, int level);
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extern void cuddLevelQueueDequeue(DdLevelQueue *queue, int level);
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extern int cuddLinearAndSifting(DdManager *table, int lower, int upper);
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extern int cuddLinearInPlace(DdManager * table, int x, int y);
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extern void cuddUpdateInteractionMatrix(DdManager * table, int xindex, int yindex);
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extern int cuddInitLinear(DdManager *table);
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extern int cuddResizeLinear(DdManager *table);
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extern DdNode * cuddBddLiteralSetIntersectionRecur(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddCProjectionRecur(DdManager *dd, DdNode *R, DdNode *Y, DdNode *Ysupp);
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extern DdNode * cuddBddClosestCube(DdManager *dd, DdNode *f, DdNode *g, CUDD_VALUE_TYPE bound);
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extern void cuddReclaim(DdManager *table, DdNode *n);
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extern void cuddReclaimZdd(DdManager *table, DdNode *n);
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extern void cuddClearDeathRow(DdManager *table);
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extern void cuddShrinkDeathRow(DdManager *table);
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extern DdNode * cuddDynamicAllocNode(DdManager *table);
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extern int cuddSifting(DdManager *table, int lower, int upper);
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extern int cuddSwapping(DdManager *table, int lower, int upper, Cudd_ReorderingType heuristic);
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extern int cuddNextHigh(DdManager *table, int x);
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extern int cuddNextLow(DdManager *table, int x);
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extern int cuddSwapInPlace(DdManager *table, int x, int y);
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extern int cuddBddAlignToZdd(DdManager *table);
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extern DdNode * cuddBddMakePrime(DdManager *dd, DdNode *cube, DdNode *f);
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extern DdNode * cuddSolveEqnRecur(DdManager *bdd, DdNode *F, DdNode *Y, DdNode **G, int n, int *yIndex, int i);
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extern DdNode * cuddVerifySol(DdManager *bdd, DdNode *F, DdNode **G, int *yIndex, int n);
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#ifdef ST_H_
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extern DdNode* cuddSplitSetRecur(DdManager *manager, st_table *mtable, int *varSeen, DdNode *p, double n, double max, int index);
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#endif
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extern DdNode * cuddSubsetHeavyBranch(DdManager *dd, DdNode *f, int numVars, int threshold);
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extern DdNode * cuddSubsetShortPaths(DdManager *dd, DdNode *f, int numVars, int threshold, int hardlimit);
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extern int cuddSymmCheck(DdManager *table, int x, int y);
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extern int cuddSymmSifting(DdManager *table, int lower, int upper);
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extern int cuddSymmSiftingConv(DdManager *table, int lower, int upper);
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extern DdNode * cuddAllocNode(DdManager *unique);
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extern DdManager * cuddInitTable(unsigned int numVars, unsigned int numVarsZ, unsigned int numSlots, unsigned int looseUpTo);
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extern void cuddFreeTable(DdManager *unique);
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extern int cuddGarbageCollect(DdManager *unique, int clearCache);
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extern DdNode * cuddZddGetNode(DdManager *zdd, int id, DdNode *T, DdNode *E);
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extern DdNode * cuddZddGetNodeIVO(DdManager *dd, int index, DdNode *g, DdNode *h);
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extern DdNode * cuddUniqueInter(DdManager *unique, int index, DdNode *T, DdNode *E);
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extern DdNode * cuddUniqueInterIVO(DdManager *unique, int index, DdNode *T, DdNode *E);
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extern DdNode * cuddUniqueInterZdd(DdManager *unique, int index, DdNode *T, DdNode *E);
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extern DdNode * cuddUniqueConst(DdManager *unique, CUDD_VALUE_TYPE value);
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extern void cuddRehash(DdManager *unique, int i);
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extern void cuddShrinkSubtable(DdManager *unique, int i);
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extern int cuddInsertSubtables(DdManager *unique, int n, int level);
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extern int cuddDestroySubtables(DdManager *unique, int n);
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extern int cuddResizeTableZdd(DdManager *unique, int index);
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extern void cuddSlowTableGrowth(DdManager *unique);
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extern int cuddP(DdManager *dd, DdNode *f);
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#ifdef ST_H_
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extern enum st_retval cuddStCountfree(void *key, void *value, void *arg);
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extern int cuddCollectNodes(DdNode *f, st_table *visited);
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#endif
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extern DdNodePtr * cuddNodeArray(DdNode *f, int *n);
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extern int cuddWindowReorder(DdManager *table, int low, int high, Cudd_ReorderingType submethod);
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extern DdNode * cuddZddProduct(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddZddUnateProduct(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddZddWeakDiv(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddZddWeakDivF(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddZddDivide(DdManager *dd, DdNode *f, DdNode *g);
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extern DdNode * cuddZddDivideF(DdManager *dd, DdNode *f, DdNode *g);
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extern int cuddZddGetCofactors3(DdManager *dd, DdNode *f, int v, DdNode **f1, DdNode **f0, DdNode **fd);
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extern int cuddZddGetCofactors2(DdManager *dd, DdNode *f, int v, DdNode **f1, DdNode **f0);
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extern DdNode * cuddZddComplement(DdManager *dd, DdNode *node);
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extern int cuddZddGetPosVarIndex(DdManager * dd, int index);
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extern int cuddZddGetNegVarIndex(DdManager * dd, int index);
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extern int cuddZddGetPosVarLevel(DdManager * dd, int index);
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extern int cuddZddGetNegVarLevel(DdManager * dd, int index);
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extern int cuddZddTreeSifting(DdManager *table, Cudd_ReorderingType method);
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extern DdNode * cuddZddIsop(DdManager *dd, DdNode *L, DdNode *U, DdNode **zdd_I);
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extern DdNode * cuddBddIsop(DdManager *dd, DdNode *L, DdNode *U);
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extern DdNode * cuddMakeBddFromZddCover(DdManager *dd, DdNode *node);
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extern int cuddZddLinearSifting(DdManager *table, int lower, int upper);
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extern int cuddZddAlignToBdd(DdManager *table);
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extern int cuddZddNextHigh(DdManager *table, int x);
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extern int cuddZddNextLow(DdManager *table, int x);
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extern int cuddZddUniqueCompare(void const *ptr_x, void const *ptr_y);
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extern int cuddZddSwapInPlace(DdManager *table, int x, int y);
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extern int cuddZddSwapping(DdManager *table, int lower, int upper, Cudd_ReorderingType heuristic);
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extern int cuddZddSifting(DdManager *table, int lower, int upper);
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extern DdNode * cuddZddIte(DdManager *dd, DdNode *f, DdNode *g, DdNode *h);
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extern DdNode * cuddZddUnion(DdManager *zdd, DdNode *P, DdNode *Q);
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extern DdNode * cuddZddIntersect(DdManager *zdd, DdNode *P, DdNode *Q);
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extern DdNode * cuddZddDiff(DdManager *zdd, DdNode *P, DdNode *Q);
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extern DdNode * cuddZddChangeAux(DdManager *zdd, DdNode *P, DdNode *zvar);
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extern DdNode * cuddZddSubset1(DdManager *dd, DdNode *P, int var);
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extern DdNode * cuddZddSubset0(DdManager *dd, DdNode *P, int var);
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extern DdNode * cuddZddChange(DdManager *dd, DdNode *P, int var);
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extern int cuddZddSymmCheck(DdManager *table, int x, int y);
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extern int cuddZddSymmSifting(DdManager *table, int lower, int upper);
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extern int cuddZddSymmSiftingConv(DdManager *table, int lower, int upper);
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extern int cuddZddP(DdManager *zdd, DdNode *f);
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#ifdef __cplusplus
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} /* end of extern "C" */
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#endif
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/** \endcond */
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#endif /* CUDD_INT_H_ */
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