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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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.
*
* $FreeBSD$
*/
#define __fenv_static
#include "fenv.h"
#ifdef __SPE__
#include <sys/types.h>
#include <machine/spr.h>
#endif
#ifdef __GNUC_GNU_INLINE__
#error "This file must be compiled with C99 'inline' semantics"
#endif
const fenv_t __fe_dfl_env = 0x00000000;
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);
#ifndef __SPE__
extern inline int feraiseexcept(int __excepts);
#endif
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);
#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
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