1 files changed, 58 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpz/fib2_ui.c b/gmp-6.3.0/mpz/fib2_ui.c
new file mode 100644
index 0000000..ea26227
--- /dev/null
+++ b/gmp-6.3.0/mpz/fib2_ui.c
@@ -0,0 +1,58 @@
+/* mpz_fib2_ui -- calculate Fibonacci numbers.
+
+Copyright 2001, 2012, 2014, 2015 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 either:
+
+  * 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.
+
+or
+
+  * the GNU General Public License as published by the Free Software
+    Foundation; either version 2 of the License, or (at your option) any
+    later version.
+
+or both in parallel, as here.
+
+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 General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library.  If not,
+see https://www.gnu.org/licenses/.  */
+
+#include <stdio.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;
+
+  if (n <= FIB_TABLE_LIMIT)
+    {
+      MPZ_NEWALLOC (fn, 1)[0] = FIB_TABLE (n);
+      SIZ(fn) = (n != 0);      /* F[0]==0, others are !=0 */
+      MPZ_NEWALLOC (fnsub1, 1)[0] = FIB_TABLE ((int) n - 1);
+      SIZ(fnsub1) = (n != 1);  /* F[1-1]==0, others are !=0 */
+      return;
+    }
+
+  size = MPN_FIB2_SIZE (n);
+  fp =  MPZ_NEWALLOC (fn,     size);
+  f1p = MPZ_NEWALLOC (fnsub1, size);
+
+  size = mpn_fib2_ui (fp, f1p, n);
+
+  SIZ(fn)     = size;
+  SIZ(fnsub1) = size - (f1p[size-1] == 0);
+}