Function `__smlawb`

pub unsafe fn __smlawb(a: i32, b: i32, c: i32) -> i32

Insert a SMLAWB instruction

Returns the equivalent of (a * b[0] + (c << 16)) >> 16 where [0] is the lower 16 bits and [1] is the upper 16 bits. Sets the Q flag if overflow occurs on the addition.