Function casperlabs_contract_ffi::ext_ffi::transfer_from_purse_to_purse

pub unsafe extern "C" fn transfer_from_purse_to_purse(
    source_ptr: *const u8, 
    source_size: usize, 
    target_ptr: *const u8, 
    target_size: usize, 
    amount_ptr: *const u8, 
    amount_size: usize
) -> i32