/* 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; }