2004-06-06 10:05:10 +00:00
|
|
|
/*-
|
2017-11-26 02:00:33 +00:00
|
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
|
|
*
|
2004-06-06 10:05:10 +00:00
|
|
|
* Copyright (c) 2004 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.
|
|
|
|
*
|
|
|
|
* $FreeBSD$
|
|
|
|
*/
|
|
|
|
|
2011-10-10 15:43:09 +00:00
|
|
|
#define __fenv_static
|
2011-10-16 05:37:56 +00:00
|
|
|
#include "fenv.h"
|
2021-05-05 14:20:56 +00:00
|
|
|
#ifdef __SPE__
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <machine/spr.h>
|
|
|
|
#endif
|
2004-06-06 10:05:10 +00:00
|
|
|
|
2011-10-10 15:43:09 +00:00
|
|
|
#ifdef __GNUC_GNU_INLINE__
|
|
|
|
#error "This file must be compiled with C99 'inline' semantics"
|
|
|
|
#endif
|
|
|
|
|
2021-05-30 02:53:35 +00:00
|
|
|
#ifdef __SPE__
|
|
|
|
const fenv_t __fe_dfl_env = SPEFSCR_DFLT;
|
|
|
|
#else
|
2004-06-06 10:05:10 +00:00
|
|
|
const fenv_t __fe_dfl_env = 0x00000000;
|
2021-05-30 02:53:35 +00:00
|
|
|
#endif
|
2011-10-10 15:43:09 +00:00
|
|
|
|
|
|
|
extern inline int feclearexcept(int __excepts);
|
|
|
|
extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
|
|
|
|
extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
|
2021-05-05 14:20:56 +00:00
|
|
|
#ifndef __SPE__
|
2011-10-10 15:43:09 +00:00
|
|
|
extern inline int feraiseexcept(int __excepts);
|
2021-05-05 14:20:56 +00:00
|
|
|
#endif
|
2011-10-10 15:43:09 +00:00
|
|
|
extern inline int fetestexcept(int __excepts);
|
|
|
|
extern inline int fegetround(void);
|
|
|
|
extern inline int fesetround(int __round);
|
|
|
|
extern inline int fegetenv(fenv_t *__envp);
|
|
|
|
extern inline int feholdexcept(fenv_t *__envp);
|
|
|
|
extern inline int fesetenv(const fenv_t *__envp);
|
|
|
|
extern inline int feupdateenv(const fenv_t *__envp);
|
2022-05-13 22:18:25 +00:00
|
|
|
extern inline int feenableexcept(int __mask);
|
|
|
|
extern inline int fedisableexcept(int __mask);
|
2021-05-05 14:20:56 +00:00
|
|
|
|
|
|
|
#ifdef __SPE__
|
|
|
|
#define PMAX 0x7f7fffff
|
|
|
|
#define PMIN 0x00800000
|
|
|
|
int feraiseexcept(int __excepts)
|
|
|
|
{
|
|
|
|
uint32_t spefscr;
|
|
|
|
|
|
|
|
spefscr = mfspr(SPR_SPEFSCR);
|
|
|
|
mtspr(SPR_SPEFSCR, spefscr | (__excepts & FE_ALL_EXCEPT));
|
|
|
|
|
|
|
|
if (__excepts & FE_INVALID)
|
|
|
|
__asm __volatile ("efsdiv %0, %0, %1" :: "r"(0), "r"(0));
|
|
|
|
if (__excepts & FE_DIVBYZERO)
|
|
|
|
__asm __volatile ("efsdiv %0, %0, %1" :: "r"(1.0f), "r"(0));
|
|
|
|
if (__excepts & FE_UNDERFLOW)
|
|
|
|
__asm __volatile ("efsmul %0, %0, %0" :: "r"(PMIN));
|
|
|
|
if (__excepts & FE_OVERFLOW)
|
|
|
|
__asm __volatile ("efsadd %0, %0, %0" :: "r"(PMAX));
|
|
|
|
if (__excepts & FE_INEXACT)
|
|
|
|
__asm __volatile ("efssub %0, %0, %1" :: "r"(PMIN), "r"(1.0f));
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
#endif
|