Function svrsubhnt_u32 

pub fn svrsubhnt_u32(
    even: svuint16_t,
    op1: svuint32_t,
    op2: svuint32_t,
) -> svuint16_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