freebsd-dev/contrib/cvs/diff/cmpbuf.c
Peter Wemm 57e58c3aa7 Import cvs-1.9.23 as at 19980123. There are a number of really nice
things fixed in here, including the '-ko' vs. -A problem with
remote cvs which caused all files with -ko to be resent each time
(which is damn painful over a modem, I can tell you).  It also found a
heap of stray empty directories that should have been pruned with the -P
flag to cvs update but were not for some reason.

It also has the fully integrated rcs and diff, so no more fork/exec
overheads for rcs,ci,patch,diff,etc.  This means that it parses the control
data in the rcs files only once rather than twice or more.

If the 'cvs diff' vs. Index thing is going to be fixed for future patch
compatability, this is the place to do it.
1998-01-26 03:09:57 +00:00

41 lines
1.2 KiB
C

/* Buffer primitives for comparison operations.
Copyright (C) 1993 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "system.h"
#include "cmpbuf.h"
/* Least common multiple of two buffer sizes A and B. */
size_t
buffer_lcm (a, b)
size_t a, b;
{
size_t m, n, r;
/* Yield reasonable values if buffer sizes are zero. */
if (!a)
return b ? b : 8 * 1024;
if (!b)
return a;
/* n = gcd (a, b) */
for (m = a, n = b; (r = m % n) != 0; m = n, n = r)
continue;
return a/n * b;
}