| /*- |
| * 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: src/lib/msun/arm/fenv.h,v 1.5 2005/03/16 19:03:45 das Exp $ |
| */ |
| |
| /* |
| * Rewritten for Android. |
| * |
| * The ARM FPSCR is described here: |
| * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0344b/Chdfafia.html |
| */ |
| |
| #ifndef _FENV_H_ |
| #define _FENV_H_ |
| |
| #include <sys/types.h> |
| |
| __BEGIN_DECLS |
| |
| /* |
| * arm/mips definition |
| */ |
| typedef __uint32_t fenv_t; |
| typedef __uint32_t fexcept_t; |
| |
| /* |
| * x86 definition |
| */ |
| /* |
| typedef struct { |
| __uint16_t __control; |
| __uint16_t __mxcsr_hi; |
| __uint16_t __status; |
| __uint16_t __mxcsr_lo; |
| __uint32_t __tag; |
| char __other[16]; |
| } fenv_t; |
| */ |
| |
| |
| /* Exception flags. */ |
| #define FE_INVALID 0x01 |
| #define FE_DIVBYZERO 0x02 |
| #define FE_OVERFLOW 0x04 |
| #define FE_UNDERFLOW 0x08 |
| #define FE_INEXACT 0x10 |
| #define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) |
| |
| /* Rounding modes. */ |
| #define FE_TONEAREST 0x0 |
| #define FE_UPWARD 0x1 |
| #define FE_DOWNWARD 0x2 |
| #define FE_TOWARDZERO 0x3 |
| |
| /* Default floating-point environment. */ |
| extern const fenv_t __fe_dfl_env; |
| #define FE_DFL_ENV (&__fe_dfl_env) |
| |
| /* |
| * Need implementations in libportable to enable following functions |
| * |
| * int fegetenv(fenv_t* __envp); |
| * int fesetenv(const fenv_t* __envp); |
| * int feholdexcept(fenv_t* __envp); |
| * int feupdateenv(const fenv_t* __envp); |
| */ |
| |
| int feclearexcept(int __excepts); |
| int fegetexceptflag(fexcept_t* __flagp, int __excepts); |
| int fesetexceptflag(const fexcept_t* __flagp, int __excepts); |
| int feraiseexcept(int __excepts); |
| int fetestexcept(int __excepts); |
| int fegetround(void); |
| int fesetround(int __round); |
| |
| __END_DECLS |
| |
| #endif /* !_FENV_H_ */ |
