1 /* mpz_lcm -- mpz/mpz least common multiple.
3 Copyright 1996, 2000, 2001, 2005 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
26 mpz_lcm (mpz_ptr r, mpz_srcptr u, mpz_srcptr v)
29 mp_size_t usize, vsize, size;
34 if (usize == 0 || vsize == 0)
49 MPZ_REALLOC (r, usize+1);
53 gl = mpn_gcd_1 (up, usize, vl);
57 c = mpn_mul_1 (rp, up, usize, vl);
67 MPZ_SRCPTR_SWAP (u, v);
72 size = MAX (usize, vsize);
73 MPZ_TMP_INIT (g, size);
76 mpz_divexact (g, u, g);
79 SIZ (r) = ABS (SIZ (r)); /* result always positive */