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Diffstat (limited to 'test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp')
-rw-r--r-- | test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp b/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp new file mode 100644 index 000000000000..331d3c51119f --- /dev/null +++ b/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp @@ -0,0 +1,122 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <random> + +// template <class UIntType, size_t w, size_t n, size_t m, size_t r, +// UIntType a, size_t u, UIntType d, size_t s, +// UIntType b, size_t t, UIntType c, size_t l, UIntType f> +// class mersenne_twister_engine +// { +// public: +// // types +// typedef UIntType result_type; +// +// // engine characteristics +// static constexpr size_t word_size = w; +// static constexpr size_t state_size = n; +// static constexpr size_t shift_size = m; +// static constexpr size_t mask_bits = r; +// static constexpr result_type xor_mask = a; +// static constexpr size_t tempering_u = u; +// static constexpr result_type tempering_d = d; +// static constexpr size_t tempering_s = s; +// static constexpr result_type tempering_b = b; +// static constexpr size_t tempering_t = t; +// static constexpr result_type tempering_c = c; +// static constexpr size_t tempering_l = l; +// static constexpr result_type initialization_multiplier = f; +// static constexpr result_type min () { return 0; } +// static constexpr result_type max() { return 2^w - 1; } +// static constexpr result_type default_seed = 5489u; + +#include <random> +#include <type_traits> +#include <cassert> + +template <class _Tp> +void where(const _Tp &) {} + +void +test1() +{ + typedef std::mt19937 E; + static_assert((E::word_size == 32), ""); + static_assert((E::state_size == 624), ""); + static_assert((E::shift_size == 397), ""); + static_assert((E::mask_bits == 31), ""); + static_assert((E::xor_mask == 0x9908b0df), ""); + static_assert((E::tempering_u == 11), ""); + static_assert((E::tempering_d == 0xffffffff), ""); + static_assert((E::tempering_s == 7), ""); + static_assert((E::tempering_b == 0x9d2c5680), ""); + static_assert((E::tempering_t == 15), ""); + static_assert((E::tempering_c == 0xefc60000), ""); + static_assert((E::tempering_l == 18), ""); + static_assert((E::initialization_multiplier == 1812433253), ""); + /*static_*/assert((E::min() == 0)/*, ""*/); + /*static_*/assert((E::max() == 0xFFFFFFFF)/*, ""*/); + static_assert((E::default_seed == 5489u), ""); + where(E::word_size); + where(E::state_size); + where(E::shift_size); + where(E::mask_bits); + where(E::xor_mask); + where(E::tempering_u); + where(E::tempering_d); + where(E::tempering_s); + where(E::tempering_b); + where(E::tempering_t); + where(E::tempering_c); + where(E::tempering_l); + where(E::initialization_multiplier); + where(E::default_seed); +} + +void +test2() +{ + typedef std::mt19937_64 E; + static_assert((E::word_size == 64), ""); + static_assert((E::state_size == 312), ""); + static_assert((E::shift_size == 156), ""); + static_assert((E::mask_bits == 31), ""); + static_assert((E::xor_mask == 0xb5026f5aa96619e9ull), ""); + static_assert((E::tempering_u == 29), ""); + static_assert((E::tempering_d == 0x5555555555555555ull), ""); + static_assert((E::tempering_s == 17), ""); + static_assert((E::tempering_b == 0x71d67fffeda60000ull), ""); + static_assert((E::tempering_t == 37), ""); + static_assert((E::tempering_c == 0xfff7eee000000000ull), ""); + static_assert((E::tempering_l == 43), ""); + static_assert((E::initialization_multiplier == 6364136223846793005ull), ""); + /*static_*/assert((E::min() == 0)/*, ""*/); + /*static_*/assert((E::max() == 0xFFFFFFFFFFFFFFFFull)/*, ""*/); + static_assert((E::default_seed == 5489u), ""); + where(E::word_size); + where(E::state_size); + where(E::shift_size); + where(E::mask_bits); + where(E::xor_mask); + where(E::tempering_u); + where(E::tempering_d); + where(E::tempering_s); + where(E::tempering_b); + where(E::tempering_t); + where(E::tempering_c); + where(E::tempering_l); + where(E::initialization_multiplier); + where(E::default_seed); +} + +int main() +{ + test1(); + test2(); +} |