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Shrink by using "SysV" or ANSI C memset to init hash table.

This commit is contained in:
joerg 2008-02-20 22:46:52 +00:00
parent 0c3c5106cb
commit 0c8d1e69b7
1 changed files with 4 additions and 37 deletions
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41
usr.bin/compress/zopen.c
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@ -1,4 +1,4 @@
/* $NetBSD: zopen.c,v 1.9 2007/02/07 14:20:58 hubertf Exp $ */
/* $NetBSD: zopen.c,v 1.10 2008/02/20 22:46:52 joerg Exp $ */
/*-
* Copyright (c) 1985, 1986, 1992, 1993
@ -37,7 +37,7 @@
#if 0
static char sccsid[] = "@(#)zopen.c 8.1 (Berkeley) 6/27/93";
#else
static char rcsid[] = "$NetBSD: zopen.c,v 1.9 2007/02/07 14:20:58 hubertf Exp $";
static char rcsid[] = "$NetBSD: zopen.c,v 1.10 2008/02/20 22:46:52 joerg Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
@ -199,7 +199,6 @@ struct s_zstate {
#define CLEAR 256 /* Table clear output code. */
static int cl_block(struct s_zstate *);
static void cl_hash(struct s_zstate *, count_int);
static code_int getcode(struct s_zstate *);
static int output(struct s_zstate *, code_int);
static int zclose(void *);
@ -280,7 +279,7 @@ zwrite(void *cookie, const char *wbp, int num)
hshift = 8 - hshift; /* Set hash code range bound. */
hsize_reg = hsize;
cl_hash(zs, (count_int)hsize_reg); /* Clear hash table. */
memset(htab, 0xff, hsize_reg);
middle: for (i = 0; count--;) {
c = *bp++;
@ -638,7 +637,7 @@ cl_block(struct s_zstate *zs) /* Table clear for block compress. */
ratio = rat;
else {
ratio = 0;
cl_hash(zs, (count_int) hsize);
memset(htab, 0xff, hsize);
free_ent = FIRST;
clear_flg = 1;
if (output(zs, (code_int) CLEAR) == -1)
@ -647,38 +646,6 @@ cl_block(struct s_zstate *zs) /* Table clear for block compress. */
return (0);
}
static void
cl_hash(struct s_zstate *zs, count_int cl_hsize) /* Reset code table. */
{
count_int *htab_p;
long i, m1;
m1 = -1;
htab_p = htab + cl_hsize;
i = cl_hsize - 16;
do { /* Might use Sys V memset(3) here. */
*(htab_p - 16) = m1;
*(htab_p - 15) = m1;
*(htab_p - 14) = m1;
*(htab_p - 13) = m1;
*(htab_p - 12) = m1;
*(htab_p - 11) = m1;
*(htab_p - 10) = m1;
*(htab_p - 9) = m1;
*(htab_p - 8) = m1;
*(htab_p - 7) = m1;
*(htab_p - 6) = m1;
*(htab_p - 5) = m1;
*(htab_p - 4) = m1;
*(htab_p - 3) = m1;
*(htab_p - 2) = m1;
*(htab_p - 1) = m1;
htab_p -= 16;
} while ((i -= 16) >= 0);
for (i += 16; i > 0; i--)
*--htab_p = m1;
}
FILE *
zopen(const char *fname, const char *mode, int bits)
{