Module malachite_base::num::arithmetic::xx_add_yy_to_zz

XXAddYYToZZ, a trait for adding two double-width numbers and returning the result as a double-width number.

xx_add_yy_to_zz

use malachite_base::num::arithmetic::traits::XXAddYYToZZ;

assert_eq!(u64::xx_add_yy_to_zz(0x12, 0x34, 0x33, 0x33), (0x45, 0x67));
assert_eq!(u8::xx_add_yy_to_zz(0x78, 0x9a, 0xbc, 0xde), (0x35, 0x78));