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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "@(#)fenv.c 1.9 06/01/31 SMI"
#pragma weak fex_merge_flags = __fex_merge_flags
#pragma weak feholdexcept = __feholdexcept
#pragma weak feupdateenv = __feupdateenv
#pragma weak fegetenv = __fegetenv
#pragma weak fesetenv = __fesetenv
#pragma weak feholdexcept96 = __feholdexcept96
#pragma weak feupdateenv96 = __feupdateenv
#pragma weak fegetenv96 = __fegetenv
#pragma weak fesetenv96 = __fesetenv
#include "fenv_synonyms.h"
#include <fenv.h>
#include <ucontext.h>
#include <thread.h>
#include "fex_handler.h"
const fenv_t __fenv_dfl_env = {
{
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
{ FEX_NONSTOP, (void(*)())0 },
},
#ifdef __i386
0x13000000
#else
0
#endif
};
int feholdexcept(fenv_t *p)
{
(void) fegetenv(p);
(void) feclearexcept(FE_ALL_EXCEPT);
return !fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
}
int feholdexcept96(fenv_t *p)
{
(void) fegetenv(p);
(void) feclearexcept(FE_ALL_EXCEPT);
return fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
}
int feupdateenv(const fenv_t *p)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
(void) fesetenv(p);
(void) feraiseexcept((int)__fenv_get_ex(fsr));
return 0;
}
int fegetenv(fenv_t *p)
{
fex_getexcepthandler(&p->__handlers, FEX_ALL);
__fenv_getfsr(&p->__fsr);
return 0;
}
int fesetenv(const fenv_t *p)
{
__fenv_setfsr(&p->__fsr);
fex_setexcepthandler(&p->__handlers, FEX_ALL);
return 0;
}
void fex_merge_flags(const fenv_t *p)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
__fenv_set_ex(fsr, __fenv_get_ex(fsr) | __fenv_get_ex(p->__fsr));
__fenv_setfsr(&fsr);
if (fex_get_log())
__fex_update_te();
}
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