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 */