Function tx_double_attribute 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn tx_double_attribute(
    doc: *const TxDocument,
    el: TxNodeId,
    name: *const c_char,
    default_val: c_double,
) -> c_double

Returns a double (f64) attribute value, or default_val if the attribute does not exist or cannot be parsed.

Safety

• doc must be a valid, non-null pointer to a TxDocument.
• name must be a valid, non-null pointer to a null-terminated UTF-8 string.