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Diffstat (limited to 'libm/include/ia64/fenv.h')
| -rw-r--r-- | libm/include/ia64/fenv.h | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/libm/include/ia64/fenv.h b/libm/include/ia64/fenv.h deleted file mode 100644 index 8c6b65b..0000000 --- a/libm/include/ia64/fenv.h +++ /dev/null @@ -1,242 +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/ia64/fenv.h,v 1.4 2005/03/16 19:03:45 das Exp $ - */ - -#ifndef _FENV_H_ -#define _FENV_H_ - -#include <sys/_types.h> - -typedef __uint64_t fenv_t; -typedef __uint16_t fexcept_t; - -/* Exception flags */ -#define FE_INVALID 0x01 -#define FE_DENORMAL 0x02 -#define FE_DIVBYZERO 0x04 -#define FE_OVERFLOW 0x08 -#define FE_UNDERFLOW 0x10 -#define FE_INEXACT 0x20 -#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_DENORMAL | FE_INEXACT | \ - FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) - -/* Rounding modes */ -#define FE_TONEAREST 0x0000 -#define FE_DOWNWARD 0x0400 -#define FE_UPWARD 0x0800 -#define FE_TOWARDZERO 0x0c00 -#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) - -#define _FPUSW_SHIFT 13 - -#define __stfpsr(__r) __asm __volatile("mov %0=ar.fpsr" : "=r" (*(__r))) -#define __ldfpsr(__r) __asm __volatile("mov ar.fpsr=%0;;" : : "r" (__r)) - -static __inline int -feclearexcept(int __excepts) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - __fpsr &= ~((fenv_t)__excepts << _FPUSW_SHIFT); - __ldfpsr(__fpsr); - return (0); -} - -static __inline int -fegetexceptflag(fexcept_t *__flagp, int __excepts) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - *__flagp = (fexcept_t)(__fpsr >> _FPUSW_SHIFT) & __excepts; - return (0); -} - -static __inline int -fesetexceptflag(const fexcept_t *__flagp, int __excepts) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - __fpsr &= ~((fenv_t)__excepts << _FPUSW_SHIFT); - __fpsr |= (fenv_t)(__excepts & *__flagp) << _FPUSW_SHIFT; - __ldfpsr(__fpsr); - return (0); -} - -/* - * It is worthwhile to use the inline version of this function iff it - * is called with arguments that are compile-time constants (due to - * dead code elimination). Unfortunately, gcc isn't smart enough to - * figure this out automatically, and there's no way to tell it. - * We assume that constant arguments will be the common case. - */ -static __inline int -feraiseexcept(int __excepts) -{ - volatile double d; - - /* - * With a compiler that supports the FENV_ACCESS pragma - * properly, simple expressions like '0.0 / 0.0' should - * be sufficient to generate traps. Unfortunately, we - * need to bring a volatile variable into the equation - * to prevent incorrect optimizations. - */ - if (__excepts & FE_INVALID) { - d = 0.0; - d = 0.0 / d; - } - if (__excepts & FE_DIVBYZERO) { - d = 0.0; - d = 1.0 / d; - } - if (__excepts & FE_OVERFLOW) { - d = 0x1.ffp1023; - d *= 2.0; - } - if (__excepts & FE_UNDERFLOW) { - d = 0x1p-1022; - d /= 0x1p1023; - } - if (__excepts & FE_INEXACT) { - d = 0x1p-1022; - d += 1.0; - } - return (0); -} - -static __inline int -fetestexcept(int __excepts) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - return ((__fpsr >> _FPUSW_SHIFT) & __excepts); -} - - -static __inline int -fegetround(void) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - return (__fpsr & _ROUND_MASK); -} - -static __inline int -fesetround(int __round) -{ - fenv_t __fpsr; - - if (__round & ~_ROUND_MASK) - return (-1); - __stfpsr(&__fpsr); - __fpsr &= ~_ROUND_MASK; - __fpsr |= __round; - __ldfpsr(__fpsr); - return (0); -} - -static __inline int -fegetenv(fenv_t *__envp) -{ - - __stfpsr(__envp); - return (0); -} - -static __inline int -feholdexcept(fenv_t *__envp) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - *__envp = __fpsr; - __fpsr &= ~((fenv_t)FE_ALL_EXCEPT << _FPUSW_SHIFT); - __fpsr |= FE_ALL_EXCEPT; - __ldfpsr(__fpsr); - return (0); -} - -static __inline int -fesetenv(const fenv_t *__envp) -{ - - __ldfpsr(*__envp); - return (0); -} - -int feupdateenv(const fenv_t *__envp); - -#if __BSD_VISIBLE - -static __inline int -feenableexcept(int __mask) -{ - fenv_t __newfpsr, __oldfpsr; - - __stfpsr(&__oldfpsr); - __newfpsr = __oldfpsr & ~(__mask & FE_ALL_EXCEPT); - __ldfpsr(__newfpsr); - return (~__oldfpsr & FE_ALL_EXCEPT); -} - -static __inline int -fedisableexcept(int __mask) -{ - fenv_t __newfpsr, __oldfpsr; - - __stfpsr(&__oldfpsr); - __newfpsr = __oldfpsr | (__mask & FE_ALL_EXCEPT); - __ldfpsr(__newfpsr); - return (~__oldfpsr & FE_ALL_EXCEPT); -} - -static __inline int -fegetexcept(void) -{ - fenv_t __fpsr; - - __stfpsr(&__fpsr); - return (~__fpsr & FE_ALL_EXCEPT); -} - -#endif /* __BSD_VISIBLE */ - -__END_DECLS - -#endif /* !_FENV_H_ */ |