207 lines
4.0 KiB
C
207 lines
4.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
__fenv_static inline int
|
|
feclearexcept(int excepts)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
__cfc1(fcsr);
|
|
fcsr &= ~(excepts | (excepts << _FCSR_CAUSE_SHIFT));
|
|
__ctc1(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fegetexceptflag(fexcept_t *flagp, int excepts)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
__cfc1(fcsr);
|
|
*flagp = fcsr & excepts;
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fesetexceptflag(const fexcept_t *flagp, int excepts)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
__cfc1(fcsr);
|
|
fcsr &= ~excepts;
|
|
fcsr |= *flagp & excepts;
|
|
__ctc1(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
feraiseexcept(int excepts)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
__cfc1(fcsr);
|
|
fcsr |= excepts | (excepts << _FCSR_CAUSE_SHIFT);
|
|
__ctc1(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fetestexcept(int excepts)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
excepts &= FE_ALL_EXCEPT;
|
|
__cfc1(fcsr);
|
|
|
|
return (fcsr & excepts);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fegetround(void)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
__cfc1(fcsr);
|
|
|
|
return (fcsr & _ROUND_MASK);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fesetround(int rounding_mode)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
if (rounding_mode & ~_ROUND_MASK)
|
|
return (-1);
|
|
|
|
__cfc1(fcsr);
|
|
fcsr &= ~_ROUND_MASK;
|
|
fcsr |= rounding_mode;
|
|
__ctc1(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fegetenv(fenv_t *envp)
|
|
{
|
|
|
|
__cfc1(*envp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
feholdexcept(fenv_t *envp)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
__cfc1(fcsr);
|
|
*envp = fcsr;
|
|
fcsr &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
|
|
__ctc1(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
fesetenv(const fenv_t *envp)
|
|
{
|
|
|
|
__ctc1(*envp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
__fenv_static inline int
|
|
feupdateenv(const fenv_t *envp)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
__cfc1(fcsr);
|
|
fesetenv(envp);
|
|
feraiseexcept(fcsr);
|
|
|
|
return (0);
|
|
}
|
|
#if __BSD_VISIBLE
|
|
|
|
/* We currently provide no external definitions of the functions below. */
|
|
|
|
#ifdef __mips_soft_float
|
|
int feenableexcept(int __mask);
|
|
int fedisableexcept(int __mask);
|
|
int fegetexcept(void);
|
|
#else
|
|
static inline int
|
|
feenableexcept(int __mask)
|
|
{
|
|
fenv_t __old_fcsr, __new_fcsr;
|
|
|
|
__cfc1(__old_fcsr);
|
|
__new_fcsr = __old_fcsr | (__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT;
|
|
__ctc1(__new_fcsr);
|
|
|
|
return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
|
|
}
|
|
|
|
static inline int
|
|
fedisableexcept(int __mask)
|
|
{
|
|
fenv_t __old_fcsr, __new_fcsr;
|
|
|
|
__cfc1(__old_fcsr);
|
|
__new_fcsr = __old_fcsr & ~((__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT);
|
|
__ctc1(__new_fcsr);
|
|
|
|
return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
|
|
}
|
|
|
|
static inline int
|
|
fegetexcept(void)
|
|
{
|
|
fexcept_t fcsr;
|
|
|
|
__cfc1(fcsr);
|
|
|
|
return ((fcsr & _ENABLE_MASK) >> _ENABLE_SHIFT);
|
|
}
|
|
|
|
#endif /* !__mips_soft_float */
|
|
|
|
#endif /* __BSD_VISIBLE */ |