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Update <random> with constexpr support. Patch contributed by Jonathan Sauer.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@153896 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2012-04-02 21:00:45 +00:00
parent 60cb7d267f
commit 8efd3dac5d
6 changed files with 130 additions and 100 deletions
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13
include/algorithm
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@@ -2508,11 +2508,16 @@ private:
_Engine_result_type __mask0_;
_Engine_result_type __mask1_;
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
static const _Working_result_type _Rp = _Engine::_Max - _Engine::_Min
+ _Working_result_type(1);
static const size_t __m = __log2<_Working_result_type, _Rp>::value;
static const size_t _WDt = numeric_limits<_Working_result_type>::digits;
static const size_t _EDt = numeric_limits<_Engine_result_type>::digits;
+ _Working_result_type(1);
#else
static _LIBCPP_CONSTEXPR const _Working_result_type _Rp = _Engine::max() - _Engine::min()
+ _Working_result_type(1);
#endif
static _LIBCPP_CONSTEXPR const size_t __m = __log2<_Working_result_type, _Rp>::value;
static _LIBCPP_CONSTEXPR const size_t _WDt = numeric_limits<_Working_result_type>::digits;
static _LIBCPP_CONSTEXPR const size_t _EDt = numeric_limits<_Engine_result_type>::digits;
public:
// constructors and seeding functions