Function svcvtxnt_f32_f64_x 

pub fn svcvtxnt_f32_f64_x(
    even: svfloat32_t,
    pg: svbool_t,
    op: svfloat64_t,
) -> svfloat32_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.

Down convert, rounding to odd (top) Arm’s documentation