Function NSDecimalAdd 

pub unsafe extern "C-unwind" fn NSDecimalAdd(
    result: NonNull<NSDecimal>,
    left_operand: NonNull<NSDecimal>,
    right_operand: NonNull<NSDecimal>,
    rounding_mode: NSRoundingMode,
) -> NSCalculationError

👎Deprecated:

renamed to NSDecimal::add

Available on crate feature NSDecimal only.