math: Remove fenvinline.h

[thirdparty/glibc.git] / math / fenv.h

diff --git a/math/fenv.h b/math/fenv.h
index 35428370b44cb821495ea73e3152ab286cad7bee..e6b9578d6ce3681bfde5d95d433c23812fd9f1c9 100644 (file)
--- a/math/fenv.h
+++ b/math/fenv.h
@@ -1,20 +1,19 @@
-/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2020 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 /*
  * ISO C99 7.6: Floating-point environment     <fenv.h>
@@ -23,7 +22,8 @@
 #ifndef _FENV_H
 #define _FENV_H        1
 
-#include <features.h>
+#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:
@@ -38,10 +38,16 @@
    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                devision by zero
+   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
@@ -71,19 +77,31 @@ 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_C2X)
+/* 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;
+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_C2X)
+/* 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;
+extern int fegetround (void) __THROW __attribute_pure__;
 
 /* Establish the rounding direction represented by ROUND.  */
 extern int fesetround (int __rounding_direction) __THROW;
@@ -102,12 +120,50 @@ 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;
+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;
+extern int feupdateenv (const fenv_t *__envp) __THROW;
+
+
+/* Control modes.  */
+
+#if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
+/* 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
+
+
+/* NaN support.  */
+
+#if (__GLIBC_USE (IEC_60559_BFP_EXT_C2X)               \
+     && 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