| /*- |
| * 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 $ |
| */ |
| |
| #pragma once |
| |
| #include <sys/cdefs.h> |
| |
| #if defined(__arm__) |
| |
| #if !defined(__BIONIC_FENV_INLINE) |
| #define __BIONIC_FENV_INLINE static __inline |
| #endif |
| |
| #include <bits/fenv_arm.h> |
| |
| __BEGIN_DECLS |
| |
| #define FPSCR_RMODE_SHIFT 22 |
| |
| __BIONIC_FENV_INLINE int fegetenv(fenv_t* __envp) { |
| fenv_t _fpscr; |
| __asm__ __volatile__("vmrs %0,fpscr" : "=r" (_fpscr)); |
| *__envp = _fpscr; |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int fesetenv(const fenv_t* __envp) { |
| fenv_t _fpscr = *__envp; |
| __asm__ __volatile__("vmsr fpscr,%0" : :"ri" (_fpscr)); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int feclearexcept(int __excepts) { |
| fexcept_t __fpscr; |
| fegetenv(&__fpscr); |
| __fpscr &= ~__excepts; |
| fesetenv(&__fpscr); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int fegetexceptflag(fexcept_t* __flagp, int __excepts) { |
| fexcept_t __fpscr; |
| fegetenv(&__fpscr); |
| *__flagp = __fpscr & __excepts; |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int fesetexceptflag(const fexcept_t* __flagp, int __excepts) { |
| fexcept_t __fpscr; |
| fegetenv(&__fpscr); |
| __fpscr &= ~__excepts; |
| __fpscr |= *__flagp & __excepts; |
| fesetenv(&__fpscr); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int feraiseexcept(int __excepts) { |
| fexcept_t __ex = __excepts; |
| fesetexceptflag(&__ex, __excepts); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int fetestexcept(int __excepts) { |
| fexcept_t __fpscr; |
| fegetenv(&__fpscr); |
| return (__fpscr & __excepts); |
| } |
| |
| __BIONIC_FENV_INLINE int fegetround(void) { |
| fenv_t _fpscr; |
| fegetenv(&_fpscr); |
| return ((_fpscr >> FPSCR_RMODE_SHIFT) & 0x3); |
| } |
| |
| __BIONIC_FENV_INLINE int fesetround(int __round) { |
| fenv_t _fpscr; |
| fegetenv(&_fpscr); |
| _fpscr &= ~(0x3 << FPSCR_RMODE_SHIFT); |
| _fpscr |= (__round << FPSCR_RMODE_SHIFT); |
| fesetenv(&_fpscr); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int feholdexcept(fenv_t* __envp) { |
| fenv_t __env; |
| fegetenv(&__env); |
| *__envp = __env; |
| __env &= ~FE_ALL_EXCEPT; |
| fesetenv(&__env); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int feupdateenv(const fenv_t* __envp) { |
| fexcept_t __fpscr; |
| fegetenv(&__fpscr); |
| fesetenv(__envp); |
| feraiseexcept(__fpscr & FE_ALL_EXCEPT); |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int feenableexcept(int __mask __unused) { |
| return -1; |
| } |
| |
| __BIONIC_FENV_INLINE int fedisableexcept(int __mask __unused) { |
| return 0; |
| } |
| |
| __BIONIC_FENV_INLINE int fegetexcept(void) { |
| return 0; |
| } |
| |
| #undef FPSCR_RMODE_SHIFT |
| |
| __END_DECLS |
| |
| #endif |