Function vec_extend_to_fp32_hi 

pub unsafe fn vec_extend_to_fp32_hi<const B: i32>(
    a: vector_signed_short,
) -> vector_float

🔬This is a nightly-only experimental API. (stdarch_s390x #135681)

Available on s390x and target feature nnp-assist only.

Converts the left-most half of a to a vector of single-precision numbers. The format of the source vector elements is specified by B.