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122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
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#ifndef __GATE_SET_H
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#define __GATE_SET_H
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/* set.h
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The following is a general-purpose set library originally developed
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by Hank Dietz and enhanced by Terence Parr to allow dynamic sets.
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Sets are now structs containing the #words in the set and
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a pointer to the actual set words.
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1987 by Hank Dietz
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Modified by:
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Terence Parr
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Purdue University
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October 1989
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Added ANSI prototyping Dec. 1992 -- TJP
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*/
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#include "pcctscfg.h"
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#ifdef NOT_USED /* SEE config.h */
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/* Define usable bits per unsigned int word */
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#ifdef PC
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#define WORDSIZE 16
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#define LogWordSize 4
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#else
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#define WORDSIZE 32
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#define LogWordSize 5
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#endif
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#define BytesPerWord sizeof(unsigned)
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#endif
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#define SETSIZE(a) ((a).n<<LogWordSize) /* Maximum items per set */
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#define MODWORD(x) ((x) & (WORDSIZE-1)) /* x % WORDSIZE */
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#define DIVWORD(x) ((x) >> LogWordSize) /* x / WORDSIZE */
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#define nil (~((unsigned) 0)) /* An impossible set member all bits on (big!) */
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typedef struct _set {
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unsigned int n; /* Number of words in set */
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unsigned *setword;
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} set;
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#define set_init {0, NULL}
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#define set_null(a) ((a).setword==NULL)
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#define NumBytes(x) (((x)>>3)+1) /* Num bytes to hold x */
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#define NumWords(x) ((((unsigned)(x))>>LogWordSize)+1) /* Num words to hold x */
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/* M a c r o s */
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/* make arg1 a set big enough to hold max elem # of arg2 */
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#define set_new(a,_max) \
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if (((a).setword=(unsigned *)calloc(NumWords(_max),BytesPerWord))==NULL) \
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fprintf(stderr, "set_new: Cannot allocate set with max of %d\n", _max); \
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(a).n = NumWords(_max);
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#define set_free(a) \
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{if ( (a).setword != NULL ) free((char *)((a).setword)); \
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(a) = empty;}
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#ifdef __USE_PROTOS
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extern void set_size( unsigned );
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extern unsigned int set_deg( set );
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extern set set_or( set, set );
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extern set set_and( set, set );
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extern set set_dif( set, set );
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extern set set_of( unsigned );
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extern void set_ext( set *, unsigned int );
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extern set set_not( set );
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extern int set_equ( set, set );
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extern int set_sub( set, set );
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extern unsigned set_int( set );
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extern int set_el( unsigned, set );
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extern int set_nil( set );
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extern char * set_str( set );
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extern set set_val( register char * );
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extern void set_orel( unsigned, set * );
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extern void set_orin( set *, set );
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extern void set_andin( set *, set );
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extern void set_rm( unsigned, set );
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extern void set_clr( set );
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extern set set_dup( set );
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extern void set_PDQ( set, register unsigned * );
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extern unsigned *set_pdq( set );
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extern void _set_pdq( set a, register unsigned *q );
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extern unsigned int set_hash( set, register unsigned int );
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#else
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extern void set_size();
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extern unsigned int set_deg();
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extern set set_or();
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extern set set_and();
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extern set set_dif();
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extern set set_of();
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extern void set_ext();
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extern set set_not();
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extern int set_equ();
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extern int set_sub();
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extern unsigned set_int();
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extern int set_el();
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extern int set_nil();
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extern char * set_str();
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extern set set_val();
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extern void set_orel();
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extern void set_orin();
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extern void set_andin();
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extern void set_rm();
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extern void set_clr();
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extern set set_dup();
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extern void set_PDQ();
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extern unsigned *set_pdq();
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extern void _set_pdq();
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extern unsigned int set_hash();
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#endif
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extern set empty;
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#endif
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