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Fixed <limits> problem

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[SVN r9693]
This commit is contained in:
John Maddock
2001-04-02 11:52:42 +00:00
parent 27028a7d32
commit 6a9f713309
1 changed files with 5 additions and 7 deletions
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12
include/boost/cast.hpp
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@@ -9,6 +9,10 @@
// See http://www.boost.org for most recent version including documentation. // See http://www.boost.org for most recent version including documentation.
// Revision History // Revision History
// 02 Apr 01 Removed BOOST_NO_LIMITS workarounds and included
// <boost/limits.hpp> instead (the workaround did not
// actually compile when BOOST_NO_LIMITS was defined in
// any case, so we loose nothing). (John Maddock)
// 21 Jan 01 Undid a bug I introduced yesterday. numeric_cast<> never // 21 Jan 01 Undid a bug I introduced yesterday. numeric_cast<> never
// worked with stock GCC; trying to get it to do that broke // worked with stock GCC; trying to get it to do that broke
// vc-stlport. // vc-stlport.
@@ -43,9 +47,7 @@
# include <cassert> # include <cassert>
# include <typeinfo> # include <typeinfo>
# include <boost/type.hpp> # include <boost/type.hpp>
# ifndef BOOST_NO_LIMITS # include <boost/limits.hpp>
# include <limits>
# endif
// It has been demonstrated numerous times that MSVC 6.0 fails silently at link // It has been demonstrated numerous times that MSVC 6.0 fails silently at link
// time if you use a template function which has template parameters that don't // time if you use a template function which has template parameters that don't
@@ -266,7 +268,6 @@ namespace boost
# pragma option push -w-8041 # pragma option push -w-8041
# endif # endif
# ifndef BOOST_NO_LIMITS
// Move to namespace boost in utility.hpp? // Move to namespace boost in utility.hpp?
template <class T> template <class T>
struct fixed_numeric_limits : public std::numeric_limits<T> struct fixed_numeric_limits : public std::numeric_limits<T>
@@ -277,7 +278,6 @@ namespace boost
? T(-std::numeric_limits<T>::max()) : std::numeric_limits<T>::min(); ? T(-std::numeric_limits<T>::max()) : std::numeric_limits<T>::min();
} }
}; };
# endif // BOOST_NO_LIMITS
# if BOOST_MSVC # if BOOST_MSVC
# pragma warning(pop) # pragma warning(pop)
@@ -291,11 +291,9 @@ namespace boost
template<typename Target, typename Source> template<typename Target, typename Source>
inline Target numeric_cast(Source arg BOOST_EXPLICIT_DEFAULT_TARGET) inline Target numeric_cast(Source arg BOOST_EXPLICIT_DEFAULT_TARGET)
{ {
#ifndef BOOST_NO_LIMITS
// typedefs abbreviating respective trait classes // typedefs abbreviating respective trait classes
typedef std::numeric_limits<Source> arg_traits; typedef std::numeric_limits<Source> arg_traits;
typedef detail::fixed_numeric_limits<Target> result_traits; typedef detail::fixed_numeric_limits<Target> result_traits;
#endif
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS #ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
// typedefs that act as compile time assertions // typedefs that act as compile time assertions