84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
88 lines
1.3 KiB
C
88 lines
1.3 KiB
C
/* $NetBSD: warshall.c,v 1.7 2013/04/06 14:52:24 christos Exp $ */
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/* Id: warshall.c,v 1.7 2010/06/06 22:48:51 tom Exp */
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#include "defs.h"
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: warshall.c,v 1.7 2013/04/06 14:52:24 christos Exp $");
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static void
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transitive_closure(unsigned *R, int n)
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{
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int rowsize;
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unsigned i;
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unsigned *rowj;
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unsigned *rp;
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unsigned *rend;
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unsigned *ccol;
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unsigned *relend;
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unsigned *cword;
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unsigned *rowi;
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rowsize = WORDSIZE(n);
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relend = R + n * rowsize;
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cword = R;
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i = 0;
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rowi = R;
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while (rowi < relend)
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{
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ccol = cword;
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rowj = R;
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while (rowj < relend)
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{
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if (*ccol & (unsigned)(1 << i))
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{
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rp = rowi;
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rend = rowj + rowsize;
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while (rowj < rend)
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*rowj++ |= *rp++;
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}
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else
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{
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rowj += rowsize;
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}
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ccol += rowsize;
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}
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if (++i >= BITS_PER_WORD)
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{
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i = 0;
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cword++;
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}
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rowi += rowsize;
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}
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}
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void
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reflexive_transitive_closure(unsigned *R, int n)
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{
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int rowsize;
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unsigned i;
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unsigned *rp;
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unsigned *relend;
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transitive_closure(R, n);
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rowsize = WORDSIZE(n);
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relend = R + n * rowsize;
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i = 0;
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rp = R;
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while (rp < relend)
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{
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*rp |= (unsigned)(1 << i);
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if (++i >= BITS_PER_WORD)
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{
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i = 0;
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rp++;
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}
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rp += rowsize;
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}
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}
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