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Only use the float.h macros on OpenBSD, it seems that on FreeBSD numeric_limits is actually a better option.

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[SVN r35501]
This commit is contained in:
Daniel James
2006-10-05 21:22:56 +00:00
parent 3732ea7566
commit 40844fb29e
1 changed files with 5 additions and 9 deletions
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14
include/boost/functional/detail/hash_float.hpp
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@@ -35,13 +35,10 @@
# endif # endif
#endif #endif
// On FreeBSD and OpenBSD, numeric_limits is not reliable for long doubles, but // On OpenBSD, numeric_limits is not reliable for long doubles, but
// the macros defined in <float.h> are. I don't know if this is also be the case for // the macros defined in <float.h> are.
// other BSDs, but using the macros if they're available seems like the best
// choice.
#if defined(__FreeBSD__) || defined(__NetBSD__) || \ #if defined(__OpenBSD__)
defined(__OpenBSD__) || defined(__DragonFly__)
#include <float.h> #include <float.h>
#endif #endif
@@ -52,8 +49,7 @@ namespace boost
template <class T> template <class T>
struct float_limits : std::numeric_limits<T> {}; struct float_limits : std::numeric_limits<T> {};
#if defined(__FreeBSD__) || defined(__NetBSD__) || \ #if defined(__OpenBSD__)
defined(__OpenBSD__) || defined(__DragonFly__)
template <> template <>
struct float_limits<long double> struct float_limits<long double>
: std::numeric_limits<long double> : std::numeric_limits<long double>
@@ -74,7 +70,7 @@ namespace boost
BOOST_STATIC_CONSTANT(int, max_exponent = LDBL_MAX_EXP); BOOST_STATIC_CONSTANT(int, max_exponent = LDBL_MAX_EXP);
BOOST_STATIC_CONSTANT(int, min_exponent = LDBL_MIN_EXP); BOOST_STATIC_CONSTANT(int, min_exponent = LDBL_MIN_EXP);
}; };
#endif // __FreeBSD__/__NetBSD__/__OpenBSD__/__DragonFly__ #endif // __OpenBSD__
inline void hash_float_combine(std::size_t& seed, std::size_t value) inline void hash_float_combine(std::size_t& seed, std::size_t value)
{ {