| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: no-random-device |
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| 10 | |
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| 11 | // <random> |
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| 12 | |
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| 13 | // class random_device; |
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| 14 | |
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| 15 | // double entropy() const; |
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| 16 | |
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| 17 | #include <random> |
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| 18 | #include <cassert> |
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| 19 | #include <climits> |
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| 20 | |
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| 21 | #include "test_macros.h" |
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| 22 | |
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| 23 | int main(int, char**) { |
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| 24 | std::random_device r; |
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| 25 | double e = r.entropy(); |
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| 26 | assert(e >= 0); |
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| 27 | assert(e <= sizeof(typename std::random_device::result_type) * CHAR_BIT); |
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| 28 | |
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| 29 | return 0; |
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| 30 | } |
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| 31 | |
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