1 /* mpz_fib2_ui -- calculate Fibonacci numbers.
3 Copyright 2001, 2012 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_fib2_ui (mpz_ptr fn, mpz_ptr fnsub1, unsigned long n)
31 size = MPN_FIB2_SIZE (n);
32 fp = MPZ_REALLOC (fn, size);
33 f1p = MPZ_REALLOC (fnsub1, size);
35 size = mpn_fib2_ui (fp, f1p, n);
37 SIZ(fn) = size - (n == 0);
38 SIZ(fnsub1) = size - (f1p[size-1] == 0);