Function __smlatt 

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

🔬This is a nightly-only experimental API. (stdarch_arm_dsp #117237)

Available on ARM and (target feature v5te and non-target feature mclass, or target features mclass and dsp) only.

Insert a SMLATT instruction

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