Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpz / pow_ui.c

diff --git a/gmp/mpz/pow_ui.c b/gmp/mpz/pow_ui.c
new file mode 100644 (file)
index 0000000..ae0307d
--- /dev/null
+++ b/gmp/mpz/pow_ui.c
@@ -0,0 +1,42 @@
+/* mpz_pow_ui -- mpz raised to ulong.
+
+Copyright 2001, 2008 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 "gmp.h"
+#include "gmp-impl.h"
+
+void
+mpz_pow_ui (mpz_ptr r, mpz_srcptr b, unsigned long int e)
+{
+  /* We test some small exponents here, mainly to avoid the overhead of
+     mpz_n_pow_ui for small bases and exponents.  */
+  switch (e)
+    {
+    case 0:
+      mpz_set_ui (r, 1);
+      break;
+    case 1:
+      mpz_set (r, b);
+      break;
+    case 2:
+      mpz_mul (r, b, b);
+      break;
+    default:
+      mpz_n_pow_ui (r, PTR(b), (mp_size_t) SIZ(b), e);
+    }
+}