49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/***********************************************************************/
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/* Based on public-domain code from Berkeley Yacc */
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* machine-dependent definitions */
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/* the following definitions are for the Tahoe */
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/* they might have to be changed for other machines */
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/* MAXCHAR is the largest unsigned character value */
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/* MAXSHORT is the largest value of a C short */
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/* MINSHORT is the most negative value of a C short */
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/* MAXTABLE is the maximum table size */
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/* BITS_PER_WORD is the number of bits in a C unsigned */
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/* WORDSIZE computes the number of words needed to */
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/* store n bits */
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/* BIT returns the value of the n-th bit starting */
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/* from r (0-indexed) */
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/* SETBIT sets the n-th bit starting from r */
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#define MAXCHAR UCHAR_MAX
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#define MAXSHORT SHRT_MAX
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#define MINSHORT SHRT_MIN
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#define MAXTABLE 32500
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#define BITS_PER_WORD (8*sizeof(unsigned))
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#define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
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#define BIT(r, n) ((((r)[(n)/BITS_PER_WORD])>>((n)%BITS_PER_WORD))&1)
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#define SETBIT(r, n) ((r)[(n)/BITS_PER_WORD]|=(1<<((n)%BITS_PER_WORD)))
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/* storage allocation macros */
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#define CALLOC(k,n) (calloc((unsigned)(k),(unsigned)(n)))
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#define FREE(x) (free((char*)(x)))
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#define MALLOC(n) (malloc((unsigned)(n)))
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#define NEW(t) ((t*)allocate(sizeof(t)))
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#define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t))))
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#define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n)))
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/* actual functions */
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void transitive_closure (unsigned int *R, int n);
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void reflexive_transitive_closure (unsigned int *R, int n);
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