FS_OPT_MUX_TO_MIN, /**< Mux(a < b, a, b) = Min(a,b) */
FS_OPT_MUX_TO_MAX, /**< Mux(a > b, a, b) = Max(a,b) */
FS_OPT_MUX_TO_ABS, /**< Mux(a > 0, a, -a) = Abs(a) */
FS_OPT_MUX_TO_MIN, /**< Mux(a < b, a, b) = Min(a,b) */
FS_OPT_MUX_TO_MAX, /**< Mux(a > b, a, b) = Max(a,b) */
FS_OPT_MUX_TO_ABS, /**< Mux(a > 0, a, -a) = Abs(a) */