Function drot_

pub unsafe extern "C" fn drot_(
    n: *const bla_integer,
    dx: *mut bla_double,
    incx: *const bla_integer,
    dy: *mut bla_double,
    incy: *const bla_integer,
    c__: *const bla_double,
    s: *const bla_double,
) -> c_int