feat(numeric): add basic random number generator function

Redcraft.Utility/Source/Private/Numeric/Random.cpp

@@ -0,0 +1,51 @@
+#include "Numeric/Random.h"
+
+#include "Templates/Atomic.h"
+
+NAMESPACE_REDCRAFT_BEGIN
+NAMESPACE_MODULE_BEGIN(Redcraft)
+NAMESPACE_MODULE_BEGIN(Utility)
+
+NAMESPACE_BEGIN(Math)
+
+NAMESPACE_UNNAMED_BEGIN
+
+TAtomic<uint32> RandState = 586103306;
+
+NAMESPACE_UNNAMED_END
+
+uint32 Seed(uint32 InSeed)
+{
+	uint32 OldSeed = RandState.Load(EMemoryOrder::Relaxed);
+
+	if (InSeed != 0) RandState.Store(InSeed, EMemoryOrder::Relaxed);
+
+	return OldSeed;
+}
+
+uint32 Rand()
+{
+	uint32 Result;
+
+	RandState.FetchFn(
+		[&Result](uint32 Value)
+		{
+			Result = Value;
+
+			Result ^= Result << 13;
+			Result ^= Result >> 17;
+			Result ^= Result << 5;
+
+			return Result;
+		},
+		EMemoryOrder::Relaxed
+	);
+
+	return Result % 0x7FFFFFFF;
+}
+
+NAMESPACE_END(Math)
+
+NAMESPACE_MODULE_END(Utility)
+NAMESPACE_MODULE_END(Redcraft)
+NAMESPACE_REDCRAFT_END