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Diffstat (limited to 'libm/arm/fenv.h')
| -rw-r--r-- | libm/arm/fenv.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/libm/arm/fenv.h b/libm/arm/fenv.h deleted file mode 100644 index 893a596..0000000 --- a/libm/arm/fenv.h +++ /dev/null @@ -1,217 +0,0 @@ -/*- - * 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: src/lib/msun/arm/fenv.h,v 1.5 2005/03/16 19:03:45 das Exp $ - */ - -#ifndef _FENV_H_ -#define _FENV_H_ - -#include <sys/types.h> - -typedef uint32_t fenv_t; -typedef uint32_t fexcept_t; - -/* Exception flags */ -#define FE_INVALID 0x0001 -#define FE_DIVBYZERO 0x0002 -#define FE_OVERFLOW 0x0004 -#define FE_UNDERFLOW 0x0008 -#define FE_INEXACT 0x0010 -#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \ - FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) - -/* Rounding modes */ -#define FE_TONEAREST 0x0000 -#define FE_TOWARDZERO 0x0001 -#define FE_UPWARD 0x0002 -#define FE_DOWNWARD 0x0003 -#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \ - FE_UPWARD | FE_TOWARDZERO) -/* __BEGIN_DECLS */ - -/* Default floating-point environment */ -extern const fenv_t __fe_dfl_env; -#define FE_DFL_ENV (&__fe_dfl_env) - -/* We need to be able to map status flag positions to mask flag positions */ -#define _FPUSW_SHIFT 16 -#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT) - -#ifdef ARM_HARD_FLOAT -#define __rfs(__fpsr) __asm __volatile("rfs %0" : "=r" (*(__fpsr))) -#define __wfs(__fpsr) __asm __volatile("wfs %0" : : "r" (__fpsr)) -#else -#define __rfs(__fpsr) -#define __wfs(__fpsr) -#endif - -static __inline int -feclearexcept(int __excepts) -{ - fexcept_t __fpsr; - - __rfs(&__fpsr); - __fpsr &= ~__excepts; - __wfs(__fpsr); - return (0); -} - -static __inline int -fegetexceptflag(fexcept_t *__flagp, int __excepts) -{ - fexcept_t __fpsr; - - __rfs(&__fpsr); - *__flagp = __fpsr & __excepts; - return (0); -} - -static __inline int -fesetexceptflag(const fexcept_t *__flagp, int __excepts) -{ - fexcept_t __fpsr; - - __rfs(&__fpsr); - __fpsr &= ~__excepts; - __fpsr |= *__flagp & __excepts; - __wfs(__fpsr); - return (0); -} - -static __inline int -feraiseexcept(int __excepts) -{ - fexcept_t __ex = __excepts; - - fesetexceptflag(&__ex, __excepts); /* XXX */ - return (0); -} - -static __inline int -fetestexcept(int __excepts) -{ - fexcept_t __fpsr; - - __rfs(&__fpsr); - return (__fpsr & __excepts); -} - -static __inline int -fegetround(void) -{ - - /* - * Apparently, the rounding mode is specified as part of the - * instruction format on ARM, so the dynamic rounding mode is - * indeterminate. Some FPUs may differ. - */ - return (-1); -} - -static __inline int -fesetround(int __round) -{ - - return (-1); -} - -static __inline int -fegetenv(fenv_t *__envp) -{ - - __rfs(__envp); - return (0); -} - -static __inline int -feholdexcept(fenv_t *__envp) -{ - fenv_t __env; - - __rfs(&__env); - *__envp = __env; - __env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK); - __wfs(__env); - return (0); -} - -static __inline int -fesetenv(const fenv_t *__envp) -{ - - __wfs(*__envp); - return (0); -} - -static __inline int -feupdateenv(const fenv_t *__envp) -{ - fexcept_t __fpsr; - - __rfs(&__fpsr); - __wfs(*__envp); - feraiseexcept(__fpsr & FE_ALL_EXCEPT); - return (0); -} - -#if __BSD_VISIBLE - -static __inline int -feenableexcept(int __mask) -{ - fenv_t __old_fpsr, __new_fpsr; - - __rfs(&__old_fpsr); - __new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT; - __wfs(__new_fpsr); - return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT); -} - -static __inline int -fedisableexcept(int __mask) -{ - fenv_t __old_fpsr, __new_fpsr; - - __rfs(&__old_fpsr); - __new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT); - __wfs(__new_fpsr); - return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT); -} - -static __inline int -fegetexcept(void) -{ - fenv_t __fpsr; - - __rfs(&__fpsr); - return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT); -} - -#endif /* __BSD_VISIBLE */ - -/* __END_DECLS */ - -#endif /* !_FENV_H_ */ |