dolphin/Source/Core/Common/Random.h
Lioncash 189d277cfc Common/Random: Add convenience template for simple arithmetic values
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.
2018-06-14 10:31:13 -04:00

27 lines
659 B
C++

// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <type_traits>
#include "Common/CommonTypes.h"
namespace Common::Random
{
/// Fill `buffer` with random bytes using a cryptographically secure pseudo-random number generator.
void Generate(void* buffer, std::size_t size);
/// Generates a random value of arithmetic type `T`
template <typename T>
T GenerateValue()
{
static_assert(std::is_arithmetic<T>(), "T must be an arithmetic type in GenerateValue.");
T value;
Generate(&value, sizeof(value));
return value;
}
} // namespace Common::Random