/*-
* 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 : src / lib / msun / arm / fenv . c , v 1 . 1 2004 / 06 / 06 10 : 03 : 59 das Exp $
*/
#include <fenv.h>
#define FPSCR_RMODE_SHIFT 22
const fenv_t __fe_dfl_env = 0 ;
int fegetenv(fenv_t* __envp) {
fenv_t _fpscr;
__asm__ __volatile__("vmrs %0,fpscr" : "=r" (_fpscr));
*__envp = _fpscr;
return 0 ;
}
int fesetenv(const fenv_t* __envp) {
fenv_t _fpscr = *__envp;
__asm__ __volatile__("vmsr fpscr,%0" : : "ri" (_fpscr));
return 0 ;
}
int feclearexcept(int __excepts) {
fexcept_t __fpscr;
fegetenv(&__fpscr);
__fpscr &= ~__excepts;
fesetenv(&__fpscr);
return 0 ;
}
int fegetexceptflag(fexcept_t* __flagp, int __excepts) {
fexcept_t __fpscr;
fegetenv(&__fpscr);
*__flagp = __fpscr & __excepts;
return 0 ;
}
int fesetexceptflag(const fexcept_t* __flagp, int __excepts) {
fexcept_t __fpscr;
fegetenv(&__fpscr);
__fpscr &= ~__excepts;
__fpscr |= *__flagp & __excepts;
fesetenv(&__fpscr);
return 0 ;
}
int feraiseexcept(int __excepts) {
fexcept_t __ex = __excepts;
fesetexceptflag(&__ex, __excepts);
return 0 ;
}
int fetestexcept(int __excepts) {
fexcept_t __fpscr;
fegetenv(&__fpscr);
return (__fpscr & __excepts);
}
int fegetround(void ) {
fenv_t _fpscr;
fegetenv(&_fpscr);
return ((_fpscr >> FPSCR_RMODE_SHIFT) & 0 x3);
}
int fesetround(int __round) {
fenv_t _fpscr;
fegetenv(&_fpscr);
_fpscr &= ~(0 x3 << FPSCR_RMODE_SHIFT);
_fpscr |= (__round << FPSCR_RMODE_SHIFT);
fesetenv(&_fpscr);
return 0 ;
}
int feholdexcept(fenv_t* __envp) {
fenv_t __env;
fegetenv(&__env);
*__envp = __env;
__env &= ~FE_ALL_EXCEPT;
fesetenv(&__env);
return 0 ;
}
int feupdateenv(const fenv_t* __envp) {
fexcept_t __fpscr;
fegetenv(&__fpscr);
fesetenv(__envp);
feraiseexcept(__fpscr & FE_ALL_EXCEPT);
return 0 ;
}
int feenableexcept(int __mask __unused) {
return -1 ;
}
int fedisableexcept(int __mask __unused) {
return 0 ;
}
int fegetexcept(void ) {
return 0 ;
}
Messung V0.5 in Prozent C=93 H=88 G=90
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-28)
¤
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