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