2000-04-21 Benjamin Kosnik <bkoz@redhat.com>

	* libstdc++-v3: New directory.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33317 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 41 insertions, 0 deletions

diff --git a/libstdc++-v3/math/signbit.c b/libstdc++-v3/math/signbit.c
new file mode 100644
index 00000000000..0d58ed88880
--- /dev/null
+++ b/libstdc++-v3/math/signbit.c
@@ -0,0 +1,41 @@
+/* Return nonzero value if number is negative. */
+
+/* Copyright (C) 1997-1999 Free Software Foundation, Inc.
+
+   This file is part of the GNU ISO C++ Library.  This library is free
+   software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This 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 a copy of the GNU General Public License along
+   with this library; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   USA.
+
+   As a special exception, you may use this file as part of a free software
+   library without restriction.  Specifically, if other files instantiate
+   templates or use macros or inline functions from this file, or you compile
+   this file and link it with other files to produce an executable, this
+   file does not by itself cause the resulting executable to be covered by
+   the GNU General Public License.  This exception does not however
+   invalidate any other reasons why the executable file might be covered by
+   the GNU General Public License.  */
+
+
+#include <math.h>
+#include "mathconf.h"
+
+int
+__signbit (double x)
+{
+  Int32_t hx;
+
+  GET_HIGH_WORD (hx, x);
+  return hx & 0x80000000;
+}