Initial commit

source/include/Kyty/Math/Rand.h

@@ -0,0 +1,62 @@
+#ifndef INCLUDE_KYTY_MATH_RAND_H_
+#define INCLUDE_KYTY_MATH_RAND_H_
+
+#include "Kyty/Core/Common.h"
+
+#include <random> // IWYU pragma: export
+
+namespace Kyty::Math {
+
+class Rand
+{
+public:
+	static void Init();
+
+	// random in range [0, 4294967295]
+	static uint32_t Uint();
+
+	// random in range [-2147483648, 2147483647]
+	static int32_t Int();
+
+	// random in range [0.0, 1.0]
+	static double DoubleInclusive();
+
+	// random in range [0.0, 1.0)
+	static double Double();
+
+	// random in range [from, to]
+	static double DoubleInclusiveRange(double from_incl, double to_incl);
+
+	// random in range [from, to)
+	static double DoubleRange(double from_incl, double to_excl);
+
+	// random in range [0.0, 1.0]
+	static float FloatInclusive();
+
+	// random in range [0.0, 1.0)
+	static float Float();
+
+	// random in range [from, to]
+	static float FloatInclusiveRange(float from_incl, float to_incl);
+
+	// random in range [from, to)
+	static float FloatRange(float from_incl, float to_excl);
+
+	// random in range [from, to]
+	static uint32_t UintInclusiveRange(uint32_t from_incl, uint32_t to_incl);
+
+	// random in range [from, to]
+	static int32_t IntInclusiveRange(int32_t from_incl, int32_t to_incl);
+
+	static void Seed(unsigned int s);
+
+	static void SeedBySystemTime();
+
+	static std::mt19937 GetRandomEngine();
+};
+
+// using Rand = Math::Rand;
+
+} // namespace Kyty::Math
+
+#endif /* INCLUDE_KYTY_MATH_RAND_H_ */