use malachite_base::num::basic::integers::PrimitiveInt;
use malachite_base::num::basic::signeds::PrimitiveSigned;
use malachite_base::num::basic::unsigneds::PrimitiveUnsigned;
use malachite_base::test_util::generators::{signed_pair_gen, unsigned_pair_gen_var_27};
#[test]
fn test_saturating_sub() {
fn test<T: PrimitiveInt>(x: T, y: T, out: T) {
assert_eq!(x.saturating_sub(y), out);
let mut x = x;
x.saturating_sub_assign(y);
assert_eq!(x, out);
}
test::<u16>(456, 123, 333);
test::<u8>(123, 200, 0);
test::<i16>(123, -456, 579);
test::<i8>(123, -45, 127);
test::<i8>(-123, 45, -128);
}
fn saturating_sub_properties_helper_unsigned<T: PrimitiveUnsigned>() {
unsigned_pair_gen_var_27::<T>().test_properties(|(x, y)| {
let mut diff = x;
diff.saturating_sub_assign(y);
assert_eq!(diff, x.saturating_sub(y));
assert!(diff <= x);
if diff > T::ZERO {
assert_eq!(diff, x - y);
}
});
}
fn saturating_sub_properties_helper_signed<T: PrimitiveSigned>() {
signed_pair_gen::<T>().test_properties(|(x, y)| {
let mut diff = x;
diff.saturating_sub_assign(y);
assert_eq!(diff, x.saturating_sub(y));
if diff > T::MIN && diff < T::MAX {
assert_eq!(diff, x - y);
}
});
}
#[test]
fn saturating_sub_properties() {
apply_fn_to_unsigneds!(saturating_sub_properties_helper_unsigned);
apply_fn_to_signeds!(saturating_sub_properties_helper_signed);
}