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/* mpz_fib2_ui -- calculate Fibonacci numbers.
Copyright 2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The GNU MP Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
void
mpz_fib2_ui (mpz_ptr fn, mpz_ptr fnsub1, unsigned long n)
{
mp_ptr fp, f1p;
mp_size_t size;
size = MPN_FIB2_SIZE (n);
MPZ_REALLOC (fn, size);
MPZ_REALLOC (fnsub1, size);
fp = PTR (fn);
f1p = PTR (fnsub1);
size = mpn_fib2_ui (fp, f1p, n);
SIZ(fn) = size - (n == 0);
SIZ(fnsub1) = size - (f1p[size-1] == 0);
}
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