1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/ieee754/bits/nan.h b/sysdeps/ieee754/bits/nan.h
new file mode 100644
index 0000000000..94988ced9c
--- /dev/null
+++ b/sysdeps/ieee754/bits/nan.h
@@ -0,0 +1,63 @@
+/* `NAN' constant for IEEE 754 machines.
+   Copyright (C) 1992, 1996, 1997 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/nan.h> directly; include <math.h> instead."
+#endif
+
+
+/* IEEE Not A Number.  */
+
+#ifdef	__GNUC__
+
+# define NAN                                                                 \
+  (__extension__                                                            \
+   ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
+    { __l: 0x7ff8000000000000ULL }).__d)
+
+# define NANF                                                                \
+  (__extension__                                                            \
+   ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; })  \
+    { __l: 0x7fc00000UL }).__d)
+
+#else
+
+# include <endian.h>
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define __nan_bytes		{ 0x7f, 0xf8, 0, 0, 0, 0, 0, 0 }
+#  define __nanf_bytes		{ 0x7f, 0xc0, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define __nan_bytes		{ 0, 0, 0, 0, 0, 0, 0xf8, 0x7f }
+#  define __nanf_bytes		{ 0, 0, 0xc0, 0x7f }
+# endif
+
+static union { unsigned char __c[8]; double __d; } __nan = { __nan_bytes };
+# define NAN	(__nan.__d)
+
+static union { unsigned char __c[4]; double __d; } __nanf = { __nanf_bytes };
+# define NANF	(__nanf.__d)
+
+#endif	/* GCC.  */
+
+/* Generally there is no separate `long double' format and it is the
+   same as `double'.  */
+
+#define NANL  NAN