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+/* Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Here should be the exception be defined:
+ FE_INVALID
+ FE_DIVBYZERO
+ FE_OVERFLOW
+ FE_UNDERFLOW
+ FE_INEXACT
+ We define no macro which signals no exception is supported. */
+
+#define FE_ALL_EXCEPT 0
+
+
+/* Here should the rounding modes be defined:
+ FE_TONEAREST
+ FE_DOWNWARD
+ FE_UPWARD
+ FE_TOWARDZERO
+ We define no macro which signals no rounding mode is selectable. */
+
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+
+/* Type representing floating-point environment. */
+typedef struct
+ {
+ fexcept_t __excepts;
+ /* XXX I don't know what else we should save. */
+ }
+fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((__const fenv_t *) -1l)