92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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/* 2012 (C) Jussi Rintanen, jrintanen.jr@gmail.com */
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float memoryused();
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void initclausedb(); /* This must be called once before adding any clauses. */
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int *allocpermclause(int,int);
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int *allocclause(int,int);
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int clauselen(int *);
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int SATinstance(int *);
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void showclauses(satinstance);
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void updateactivity(int *,int);
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void setLBD(int *,int);
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void free_clauses(int);
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int GCaggressiveness;
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double collectgarbage();
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double allocatedbyCDB;
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int clausecount;
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void check_malloc_success(void *,int);
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int ptr2intpad(int *); /* Calculate number of sizeof(int) to align. */
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void falsifiedsomeclause(satinstance);
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/* The pointers to the next clauses in which the watched literals occur
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are respectively either 4 or 8 bytes (1 or 2 sizeof(int)s), depending
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on whether we are in a 32 or 64 bit processor. This affects the indices
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of the different fields in the clause data structure. */
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#if defined(__LP64__)
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#define PREFIXWORDS 8
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#else
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#define PREFIXWORDS 6
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#endif
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#if defined(__LP64__)
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#define PREFIX_WATCHA -8
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#define PREFIX_WATCHB -6
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#else
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#define PREFIX_WATCHA -6
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#define PREFIX_WATCHB -5
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#endif
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#define PREFIX_ACTIVITY -4
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#define PREFIX_LBD -3
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#define PREFIX_INSTANCE -2
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#define PREFIX_CLAUSELEN -1
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/* Clauses in the clause data base:
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location content
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-6 watched literal watched clauses link 1
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-5 watched literal watched clauses link 2
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-4 activity
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-3 LBD
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-2 SAT instance number
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-1 # of literals in clause
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0 1st literal
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1 2nd literal
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. .
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. .
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n-1 last literal
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n -1
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WARNING: These fields should always be accessed with the PREFIX_xxx macros.
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*/
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/* Macros for accessing the pointers at c[PREFIX_WATCHA] and c[PREFIX_WATCHB].
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The issue is that c[] is an integer (4 byte) array, and in 64-bit
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architectures pointers are twice as long. */
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#define ASSIGN_WATCHA *((PTRINT *)(c+PREFIX_WATCHA))
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#define ACCESS_WATCHA *((PTRINT *)(c+PREFIX_WATCHA))
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#define ADDRESS_WATCHA ((PTRINT *)(c+PREFIX_WATCHA))
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#define ASSIGN_WATCHB *((PTRINT *)(c+PREFIX_WATCHB))
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#define ACCESS_WATCHB *((PTRINT *)(c+PREFIX_WATCHB))
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#define ADDRESS_WATCHB ((PTRINT *)(c+PREFIX_WATCHB))
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#define lsASSIGN_WATCHA *((PTRINT *)(ls+PREFIX_WATCHA))
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#define lsACCESS_WATCHA *((PTRINT *)(ls+PREFIX_WATCHA))
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#define lsASSIGN_WATCHB *((PTRINT *)(ls+PREFIX_WATCHB))
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#define lsACCESS_WATCHB *((PTRINT *)(ls+PREFIX_WATCHB))
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