| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <random> |
| |
| // template<class RealType = double> |
| // class normal_distribution |
| |
| // explicit normal_distribution(RealType mean = 0.0, RealType stddev = 1.0); // before C++20 |
| // normal_distribution() : normal_distribution(0.0) {} // C++20 |
| // explicit normal_distribution(RealType mean, RealType stddev = 1.0); // C++20 |
| |
| #include <random> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #if TEST_STD_VER >= 11 |
| #include "make_implicit.h" |
| #include "test_convertible.h" |
| #endif |
| |
| template <class T> |
| void test_implicit() { |
| #if TEST_STD_VER >= 11 |
| typedef std::normal_distribution<T> D; |
| static_assert(test_convertible<D>(), ""); |
| assert(D(0) == make_implicit<D>()); |
| static_assert(!test_convertible<D, T>(), ""); |
| static_assert(!test_convertible<D, T, T>(), ""); |
| #endif |
| } |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::normal_distribution<> D; |
| D d; |
| assert(d.mean() == 0); |
| assert(d.stddev() == 1); |
| } |
| { |
| typedef std::normal_distribution<> D; |
| D d(14.5); |
| assert(d.mean() == 14.5); |
| assert(d.stddev() == 1); |
| } |
| { |
| typedef std::normal_distribution<> D; |
| D d(14.5, 5.25); |
| assert(d.mean() == 14.5); |
| assert(d.stddev() == 5.25); |
| } |
| |
| test_implicit<float>(); |
| test_implicit<double>(); |
| |
| return 0; |
| } |