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In cases where we just want a random value for a primitive arithmetic type, we can wrap this in a template to allow convenient direct assignment instead of keeping declaration and initialization separate (making it more difficult to use values uninitialized). This also allows the use of Common::Random with functions such as std::generate, making it more flexible in how random values can be generated.
27 lines
659 B
C++
27 lines
659 B
C++
// Copyright 2018 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <type_traits>
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#include "Common/CommonTypes.h"
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namespace Common::Random
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{
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/// Fill `buffer` with random bytes using a cryptographically secure pseudo-random number generator.
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void Generate(void* buffer, std::size_t size);
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/// Generates a random value of arithmetic type `T`
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template <typename T>
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T GenerateValue()
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{
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static_assert(std::is_arithmetic<T>(), "T must be an arithmetic type in GenerateValue.");
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T value;
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Generate(&value, sizeof(value));
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return value;
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}
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} // namespace Common::Random
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