Function unit4

Source/astcenc_vecmathlib.h:311–314

* @brief Factory that returns a unit length 4 component vfloat4. */

 * @brief Factory that returns a unit length 4 component vfloat4.
 */
static ASTCENC_SIMD_INLINE vfloat4 unit4()
{
	return vfloat4(0.5f);
}

/**
 * @brief Factory that returns a unit length 3 component vfloat4.