1 files changed, 89 insertions, 0 deletions
diff --git a/sysdeps/ieee754/bits/huge_val.h b/sysdeps/ieee754/bits/huge_val.h
new file mode 100644
index 0000000000..fe0144c734
--- /dev/null
+++ b/sysdeps/ieee754/bits/huge_val.h
@@ -0,0 +1,89 @@
+/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 1992, 1995, 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/huge_val.h> directly; include <math.h> instead."
+#endif
+
+
+#include <features.h>
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity).  */
+
+#ifdef	__GNUC__
+
+#define HUGE_VAL                                                            \
+  (__extension__                                                            \
+   ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
+    { __l: 0x7ff0000000000000ULL }).__d)
+
+#else /* not GCC */
+
+#include <sys/cdefs.h>
+#include <endian.h>
+
+typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define	__HUGE_VAL_bytes	{ 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
+#endif
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define	__HUGE_VAL_bytes	{ 0, 0, 0, 0, 0, 0, 0xf0, 0x7f }
+#endif
+
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+#define	HUGE_VAL	(__huge_val.__d)
+
+#endif	/* GCC.  */
+
+
+/* ISO C 9X extensions: (float) HUGE_VALF and (long double) HUGE_VALL.  */
+
+#ifdef __USE_ISOC9X
+
+#ifdef __GNUC__
+
+#define HUGE_VALF                                                           \
+  (__extension__                                                            \
+   ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; })  \
+    { __l: 0x7f800000UL }).__d)
+
+#else /* not GCC */
+
+typedef union { unsigned char __c[4]; float __f; } __huge_valf_t;
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define	__HUGE_VALF_bytes	{ 0x7f, 0x80, 0, 0 }
+#endif
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define	__HUGE_VALF_bytes	{ 0, 0, 0x80, 0x7f }
+#endif
+
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+#define	HUGE_VALF	(__huge_valf.__f)
+
+#endif	/* GCC.  */
+
+
+/* Generally there is no separate `long double' format and it is the
+   same as `double'.  */
+#define HUGE_VALL HUGE_VAL
+
+#endif /* __USE_ISOC9X.  */