Function get_weight 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn get_weight(
    descriptor: *const c_char,
    psbt: *const c_char,
) -> *mut c_char

Gets the weight of a transaction built with a given descriptor.

• OUTPUT

 TransactionWeight {
    weight: usize,
 }

Safety

• This function is unsafe because it dereferences and a returns raw pointer.
• ENSURE that result is passed into cstring_free(ptr: *mut c_char) after use.