Function svrsubhnt_n_u16 

pub fn svrsubhnt_n_u16(even: svuint8_t, op1: svuint16_t, op2: u16) -> svuint8_t

🔬This is a nightly-only experimental API. (stdarch_aarch64_sve #145052)

Available on (AArch64 or ARM64EC) and target feature sve and target feature sve2 only.

Rounding subtract narrow high part (top) Arm’s documentation