Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpf / get_d.c

diff --git a/gmp/mpf/get_d.c b/gmp/mpf/get_d.c
new file mode 100644 (file)
index 0000000..7be1c6b
--- /dev/null
+++ b/gmp/mpf/get_d.c
@@ -0,0 +1,36 @@
+/* double mpf_get_d (mpf_t src) -- return SRC truncated to a double.
+
+Copyright 1996, 2001, 2002, 2003, 2004 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"
+
+double
+mpf_get_d (mpf_srcptr src)
+{
+  mp_size_t  size, abs_size;
+  long       exp;
+
+  size = SIZ (src);
+  if (UNLIKELY (size == 0))
+    return 0.0;
+
+  abs_size = ABS (size);
+  exp = (EXP (src) - abs_size) * GMP_NUMB_BITS;
+  return mpn_get_d (PTR (src), abs_size, size, exp);
+}