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Added BOOST_HAS_FENV_H detection to Boost.Config (if this macro is defined, then

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the standard library/platform provide a POSIX compliant implementation of fenv.h).



[SVN r66693]
This commit is contained in:
Bryce Adelstein-Lelbach
2010-11-23 03:34:05 +00:00
parent 9261171c6f
commit 2c1f83de56
1 changed files with 11 additions and 9 deletions
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18
include/boost/detail/fenv.hpp
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@@ -5,6 +5,12 @@
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/ =============================================================================*/
#include <boost/config.hpp>
#if !defined(BOOST_HAS_FENV_H)
#error This platform does not have a floating point environment
#endif
#if !defined(BOOST_DETAIL_FENV_HPP) #if !defined(BOOST_DETAIL_FENV_HPP)
#define BOOST_DETAIL_FENV_HPP #define BOOST_DETAIL_FENV_HPP
@@ -13,7 +19,6 @@
#if defined(__clang__) && \ #if defined(__clang__) && \
defined(__GNU_LIBRARY__) && /* up to version 5 */ \ defined(__GNU_LIBRARY__) && /* up to version 5 */ \
defined(__GLIBC__) /* version 6 + */ defined(__GLIBC__) /* version 6 + */
#define _FENV_H #define _FENV_H
#include <features.h> #include <features.h>
@@ -56,16 +61,13 @@
} } } }
#else /* if we're not using GNU's C stdlib, fenv.h should work with clang */ #else /* if we're not using GNU's C stdlib, fenv.h should work with clang */
#if defined(__SUNPRO_CC) /* lol suncc */
#if defined(__CYGWIN__) /* lol cygwin */
#warn The <fenv.h> header is not available for this platform
#elif defined(__SUNPRO_CC) /* lol suncc */
#include <stdio.h> #include <stdio.h>
#include <fenv.h>
#else
#include <fenv.h>
#endif #endif
#include <fenv.h>
#endif #endif
#endif /* BOOST_DETAIL_FENV_HPP */ #endif /* BOOST_DETAIL_FENV_HPP */