#[unsafe(no_mangle)]pub unsafe extern "C" fn polyxml_value_get_float(
val: *const PolyXmlValue,
out_float: *mut f64,
) -> PolyXmlErrorCode#[unsafe(no_mangle)]pub unsafe extern "C" fn polyxml_value_get_float(
val: *const PolyXmlValue,
out_float: *mut f64,
) -> PolyXmlErrorCode