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diff --git a/dev/crt/math.h b/dev/crt/math.h
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+/* -------------------------------------------
+
+	Copyright ZKA Web Services Co.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <crt/defines.h>
+
+/// @file Math.h
+/// @brief Math functions.
+
+#ifdef __ZKA_USE_DOUBLE__
+typedef double real_type;
+#else
+typedef float real_type;
+#endif
+
+namespace std::math
+{
+	/// @brief Power function, with Repeat argument.
+	template <size_t Exponent>
+	inline real_type pow(real_type in)
+	{
+		if (Exponent == 0)
+			return 1; // Any number to the power of 0 is 1.
+
+		if (Exponent == 1)
+			return in; // Any number to the power of 1 is itself.
+
+		size_t cnt = Exponent;
+
+		real_type result = 1;
+
+		for (auto i = 0; i < cnt; ++i)
+			result *= in;
+
+		return result;
+	}
+
+	/// @brief Square of function, with Base template argument.
+	/// @param of Base argument to find sqquare of
+	template <size_t Base>
+	inline real_type sqr(real_type in)
+	{
+		if (in == 0)
+			return 0;
+
+		return pow<1 / Base>(in);
+	}
+
+	/// @brief Linear interpolation equation solver.
+	/// @param from where?
+	/// @param to to?
+	/// @param Updated diff value according to difference.
+	inline real_type lerp(real_type to, real_type from, real_type stat)
+	{
+		real_type diff = (to - from);
+		return from + (diff * stat);
+	}
+} // namespace std::math