| /*- |
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD |
| * |
| * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _SYS_FENV_H_ |
| #define _SYS_FENV_H_ 1 |
| |
| #include <sys/_types.h> |
| #include <sys/cdefs.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef int fenv_t; |
| typedef int fexcept_t; |
| |
| /* Exception flags */ |
| #define FE_INVALID 0x0001 |
| #define FE_DIVBYZERO 0x0002 |
| #define FE_OVERFLOW 0x0004 |
| #define FE_UNDERFLOW 0x0008 |
| #define FE_INEXACT 0x0010 |
| #ifndef __SOFTFP__ |
| #define FE_DENORMAL 0x0080 |
| #define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \ |
| FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW | FE_DENORMAL) |
| #else |
| #define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \ |
| FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) |
| #endif |
| |
| /* Rounding modes */ |
| #define FE_TONEAREST 0x00000000 |
| #define FE_UPWARD 0x00400000 |
| #define FE_DOWNWARD 0x00800000 |
| #define FE_TOWARDZERO 0x00c00000 |
| |
| /* Default floating-point environment */ |
| extern const fenv_t *_fe_dfl_env; |
| #define FE_DFL_ENV (_fe_dfl_env) |
| |
| int feclearexcept(int); |
| int fegetexceptflag(fexcept_t *, int); |
| int fesetexceptflag(const fexcept_t *, int); |
| int feraiseexcept(int); |
| int fetestexcept(int); |
| int fegetround(void); |
| int fesetround(int); |
| int fegetenv(fenv_t *); |
| int feholdexcept(fenv_t *); |
| int fesetenv(const fenv_t *); |
| int feupdateenv(const fenv_t *); |
| #if __BSD_VISIBLE |
| int feenableexcept(int); |
| int fedisableexcept(int); |
| int fegetexcept(void); |
| #endif /* __BSD_VISIBLE */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _SYS_FENV_H_ */ |
