Function clamp

Source/astcenc_mathlib.h:272–279

 */
template<typename T>
inline T clamp(T v, T mn, T mx)
{
	// Do not reorder; correct NaN handling relies on the fact that comparison
	// with NaN returns false and will fall-through to the "min" value.
	if (v > mx) return mx;
	if (v > mn) return v;
	return mn;
}

/**
 * @brief Clamp a float value between 0.0f and 1.0f.