Function t_real_get_region 

pub unsafe extern "C-unwind" fn t_real_get_region<T: AltReal>(
    x: SEXP,
    i: R_xlen_t,
    n: R_xlen_t,
    out: *mut f64,
) -> R_xlen_t

Trampoline for real Get_region method.

Safety

x must be a valid ALTREP REALSXP and out a valid buffer of at least n elements.