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Diffstat (limited to 'math/fenv.h')
| -rw-r--r-- | math/fenv.h | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/math/fenv.h b/math/fenv.h deleted file mode 100644 index e693ec2187..0000000000 --- a/math/fenv.h +++ /dev/null @@ -1,174 +0,0 @@ -/* Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -/* - * ISO C99 7.6: Floating-point environment <fenv.h> - */ - -#ifndef _FENV_H -#define _FENV_H 1 - -#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION -#include <bits/libc-header-start.h> - -/* Get the architecture dependend definitions. The following definitions - are expected to be done: - - fenv_t type for object representing an entire floating-point - environment - - FE_DFL_ENV macro of type pointer to fenv_t to be used as the argument - to functions taking an argument of type fenv_t; in this - case the default environment will be used - - fexcept_t type for object representing the floating-point exception - flags including status associated with the flags - - femode_t type for object representing floating-point control modes - - FE_DFL_MODE macro of type pointer to const femode_t to be used as the - argument to fesetmode; in this case the default control - modes will be used - - The following macros are defined iff the implementation supports this - kind of exception. - FE_INEXACT inexact result - FE_DIVBYZERO division by zero - FE_UNDERFLOW result not representable due to underflow - FE_OVERFLOW result not representable due to overflow - FE_INVALID invalid operation - - FE_ALL_EXCEPT bitwise OR of all supported exceptions - - The next macros are defined iff the appropriate rounding mode is - supported by the implementation. - FE_TONEAREST round to nearest - FE_UPWARD round toward +Inf - FE_DOWNWARD round toward -Inf - FE_TOWARDZERO round toward 0 -*/ -#include <bits/fenv.h> - -__BEGIN_DECLS - -/* Floating-point exception handling. */ - -/* Clear the supported exceptions represented by EXCEPTS. */ -extern int feclearexcept (int __excepts) __THROW; - -/* Store implementation-defined representation of the exception flags - indicated by EXCEPTS in the object pointed to by FLAGP. */ -extern int fegetexceptflag (fexcept_t *__flagp, int __excepts) __THROW; - -/* Raise the supported exceptions represented by EXCEPTS. */ -extern int feraiseexcept (int __excepts) __THROW; - -#if __GLIBC_USE (IEC_60559_BFP_EXT) -/* Set the supported exception flags represented by EXCEPTS, without - causing enabled traps to be taken. */ -extern int fesetexcept (int __excepts) __THROW; -#endif - -/* Set complete status for exceptions indicated by EXCEPTS according to - the representation in the object pointed to by FLAGP. */ -extern int fesetexceptflag (const fexcept_t *__flagp, int __excepts) __THROW; - -/* Determine which of subset of the exceptions specified by EXCEPTS are - currently set. */ -extern int fetestexcept (int __excepts) __THROW; - -#if __GLIBC_USE (IEC_60559_BFP_EXT) -/* Determine which of subset of the exceptions specified by EXCEPTS - are set in *FLAGP. */ -extern int fetestexceptflag (const fexcept_t *__flagp, int __excepts) __THROW; -#endif - - -/* Rounding control. */ - -/* Get current rounding direction. */ -extern int fegetround (void) __THROW __attribute_pure__; - -/* Establish the rounding direction represented by ROUND. */ -extern int fesetround (int __rounding_direction) __THROW; - - -/* Floating-point environment. */ - -/* Store the current floating-point environment in the object pointed - to by ENVP. */ -extern int fegetenv (fenv_t *__envp) __THROW; - -/* Save the current environment in the object pointed to by ENVP, clear - exception flags and install a non-stop mode (if available) for all - exceptions. */ -extern int feholdexcept (fenv_t *__envp) __THROW; - -/* Establish the floating-point environment represented by the object - pointed to by ENVP. */ -extern int fesetenv (const fenv_t *__envp) __THROW; - -/* Save current exceptions in temporary storage, install environment - represented by object pointed to by ENVP and raise exceptions - according to saved exceptions. */ -extern int feupdateenv (const fenv_t *__envp) __THROW; - - -/* Control modes. */ - -#if __GLIBC_USE (IEC_60559_BFP_EXT) -/* Store the current floating-point control modes in the object - pointed to by MODEP. */ -extern int fegetmode (femode_t *__modep) __THROW; - -/* Establish the floating-point control modes represented by the - object pointed to by MODEP. */ -extern int fesetmode (const femode_t *__modep) __THROW; -#endif - -/* Include optimization. */ -#ifdef __OPTIMIZE__ -# include <bits/fenvinline.h> -#endif - -/* NaN support. */ - -#if (__GLIBC_USE (IEC_60559_BFP_EXT) \ - && defined FE_INVALID \ - && defined __SUPPORT_SNAN__) -# define FE_SNANS_ALWAYS_SIGNAL 1 -#endif - -#ifdef __USE_GNU - -/* Enable individual exceptions. Will not enable more exceptions than - EXCEPTS specifies. Returns the previous enabled exceptions if all - exceptions are successfully set, otherwise returns -1. */ -extern int feenableexcept (int __excepts) __THROW; - -/* Disable individual exceptions. Will not disable more exceptions than - EXCEPTS specifies. Returns the previous enabled exceptions if all - exceptions are successfully disabled, otherwise returns -1. */ -extern int fedisableexcept (int __excepts) __THROW; - -/* Return enabled exceptions. */ -extern int fegetexcept (void) __THROW; -#endif - -__END_DECLS - -#endif /* fenv.h */ |