initial import

1 files changed, 42 insertions, 0 deletions

diff --git a/sysdeps/ieee754/frexp.c b/sysdeps/ieee754/frexp.c
new file mode 100644
index 0000000000..c56a17f6c1
--- /dev/null
+++ b/sysdeps/ieee754/frexp.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <math.h>
+#include "ieee754.h"
+
+/* Break VALUE into a normalized fraction and an integral power of 2.  */
+
+double
+frexp (value, exp)
+     double value;
+     int *exp;
+{
+  if (value == 0)
+    {
+      *exp = 0;
+      return 0;
+    }
+  else
+    {
+      union ieee754_double u;
+      u.d = value;
+      *exp = u.ieee.exponent - 1022;
+      u.ieee.exponent = 1022;
+      return u.d;
+    }
+}