Function dot3_s

Source/astcenc_vecmathlib_common_4.h:315–319

* @brief Return the dot product for the bottom 3 lanes, returning scalar. */

 * @brief Return the dot product for the bottom 3 lanes, returning scalar.
 */
ASTCENC_SIMD_INLINE float dot3_s(vfloat4 a, vfloat4 b)
{
	vfloat4 m = a * b;
	return hadd_rgb_s(m);
}

/**
 * @brief Return the dot product for the bottom 3 lanes, returning vector.