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+/* Copyright (C) 1999-2017 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Define bits representing the exception. We use the bit positions of
+ the appropriate bits in the FPSR... (Tahoe EAS 2.4 5-4)*/
+
+enum
+ {
+ FE_INEXACT =
+#define FE_INEXACT (1 << 5)
+ FE_INEXACT,
+
+ FE_UNDERFLOW =
+#define FE_UNDERFLOW (1 << 4)
+ FE_UNDERFLOW,
+
+ FE_OVERFLOW =
+#define FE_OVERFLOW (1 << 3)
+ FE_OVERFLOW,
+
+ FE_DIVBYZERO =
+#define FE_DIVBYZERO (1 << 2)
+ FE_DIVBYZERO,
+
+ FE_UNNORMAL =
+#define FE_UNNORMAL (1 << 1)
+ FE_UNNORMAL,
+
+ FE_INVALID =
+#define FE_INVALID (1 << 0)
+ FE_INVALID,
+
+ FE_ALL_EXCEPT =
+#define FE_ALL_EXCEPT (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_UNNORMAL | FE_INVALID)
+ FE_ALL_EXCEPT
+ };
+
+
+enum
+ {
+ FE_TOWARDZERO =
+#define FE_TOWARDZERO 3
+ FE_TOWARDZERO,
+
+ FE_UPWARD =
+#define FE_UPWARD 2
+ FE_UPWARD,
+
+ FE_DOWNWARD =
+#define FE_DOWNWARD 1
+ FE_DOWNWARD,
+
+ FE_TONEAREST =
+#define FE_TONEAREST 0
+ FE_TONEAREST,
+ };
+
+
+/* Type representing exception flags. */
+typedef unsigned long int fexcept_t;
+
+/* Type representing floating-point environment. */
+typedef unsigned long int fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((const fenv_t *) 0xc009804c0270033fUL)
+
+#ifdef __USE_GNU
+/* Floating-point environment where only FE_UNNORMAL is masked since this
+ exception is not generally supported by glibc. */
+# define FE_NOMASK_ENV ((const fenv_t *) 0xc009804c02700302UL)
+
+/* Floating-point environment with (processor-dependent) non-IEEE
+ floating point. In this case, turning on flush-to-zero mode for
+ s0, s2, and s3. */
+# define FE_NONIEEE_ENV ((const fenv_t *) 0xc009a04d0270037fUL)
+#endif
+
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+/* Type representing floating-point control modes. */
+typedef unsigned long int femode_t;
+
+/* Default floating-point control modes. */
+# define FE_DFL_MODE ((const femode_t *) 0xc009804c0270033fUL)
+#endif