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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 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma weak feclearexcept = __feclearexcept
#pragma weak feraiseexcept = __feraiseexcept
#pragma weak fetestexcept = __fetestexcept
#pragma weak fegetexceptflag = __fegetexceptflag
#pragma weak fesetexceptflag = __fesetexceptflag
#pragma weak feclearexcept96 = __feclearexcept
#pragma weak feraiseexcept96 = __feraiseexcept
#pragma weak fetestexcept96 = __fetestexcept
#pragma weak fegetexceptflag96 = __fegetexceptflag
#pragma weak fesetexceptflag96 = __fesetexceptflag
#include "fenv_synonyms.h"
#include <fenv.h>
#include <sys/ieeefp.h>
#include <ucontext.h>
#include <thread.h>
#include "fex_handler.h"
#include "fenv_inlines.h"
int feclearexcept(int e)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
__fenv_set_ex(fsr, __fenv_get_ex(fsr) & ~e);
__fenv_setfsr(&fsr);
if (fex_get_log())
__fex_update_te();
return 0;
}
/*
* note - __fex_hdlr depends on fetestexcept following feraiseexcept
*/
int feraiseexcept(int e)
{
volatile double t;
unsigned long fsr;
if (e & FE_INVALID) {
t = 0.0;
t /= 0.0;
}
if (e & FE_DIVBYZERO) {
t = 1.0e300;
t /= 0.0;
}
if (e & FE_OVERFLOW) {
/* if overflow is not trapped, avoid raising inexact */
__fenv_getfsr(&fsr);
if (!(__fenv_get_te(fsr) & (1 << fp_trap_overflow))) {
__fenv_set_ex(fsr, __fenv_get_ex(fsr) | FE_OVERFLOW);
__fenv_setfsr(&fsr);
}
else {
t = 1.0e300;
t *= 1.0e300;
}
}
if (e & FE_UNDERFLOW) {
/* if underflow is not trapped, avoid raising inexact */
__fenv_getfsr(&fsr);
if (!(__fenv_get_te(fsr) & (1 << fp_trap_underflow))) {
__fenv_set_ex(fsr, __fenv_get_ex(fsr) | FE_UNDERFLOW);
__fenv_setfsr(&fsr);
}
else {
t = 1.0e-307;
t -= 1.001e-307;
}
}
if (e & FE_INEXACT) {
t = 1.0e300;
t += 1.0e-307;
}
return 0;
}
int fetestexcept(int e)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
return (int)__fenv_get_ex(fsr) & e;
}
int fegetexceptflag(fexcept_t *p, int e)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
*p = (int)__fenv_get_ex(fsr) & e;
return 0;
}
int fesetexceptflag(const fexcept_t *p, int e)
{
unsigned long fsr;
__fenv_getfsr(&fsr);
__fenv_set_ex(fsr, (((int)__fenv_get_ex(fsr) & ~e) | (*p & e)) &
FE_ALL_EXCEPT);
__fenv_setfsr(&fsr);
if (fex_get_log())
__fex_update_te();
return 0;
}
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