use malachite_base::num::basic::floats::PrimitiveFloat;
use malachite_nz::natural::Natural;
use malachite_nz::test_util::generators::{
natural_gen, natural_natural_primitive_float_triple_gen, natural_primitive_float_pair_gen,
natural_primitive_float_primitive_float_triple_gen,
};
use rug;
use std::cmp::Ordering;
use std::str::FromStr;
#[test]
fn test_partial_cmp_primitive_float() {
let test = |u, v: f32, out: Option<Ordering>| {
let out_rev = out.map(Ordering::reverse);
assert_eq!(Natural::from_str(u).unwrap().partial_cmp(&v), out);
assert_eq!(rug::Integer::from_str(u).unwrap().partial_cmp(&v), out);
assert_eq!(v.partial_cmp(&Natural::from_str(u).unwrap()), out_rev);
assert_eq!(v.partial_cmp(&rug::Integer::from_str(u).unwrap()), out_rev);
let v = f64::from(v);
assert_eq!(Natural::from_str(u).unwrap().partial_cmp(&v), out);
assert_eq!(rug::Integer::from_str(u).unwrap().partial_cmp(&v), out);
assert_eq!(v.partial_cmp(&Natural::from_str(u).unwrap()), out_rev);
assert_eq!(v.partial_cmp(&rug::Integer::from_str(u).unwrap()), out_rev);
};
test("5", f32::NAN, None);
test("5", f32::POSITIVE_INFINITY, Some(Ordering::Less));
test("5", f32::NEGATIVE_INFINITY, Some(Ordering::Greater));
test("0", 0.0, Some(Ordering::Equal));
test("0", -0.0, Some(Ordering::Equal));
test("0", 5.0, Some(Ordering::Less));
test("0", -5.0, Some(Ordering::Greater));
test("123", 123.0, Some(Ordering::Equal));
test("123", 5.0, Some(Ordering::Greater));
test("123", -123.0, Some(Ordering::Greater));
test("1000000000000", 123.0, Some(Ordering::Greater));
test(
"1208925819614629174706175",
1.2089258e24,
Some(Ordering::Less),
);
test(
"1208925819614629174706176",
1.2089258e24,
Some(Ordering::Equal),
);
test(
"1208925819614629174706177",
1.2089258e24,
Some(Ordering::Greater),
);
test(
"1208925819614629174706175",
-1.2089258e24,
Some(Ordering::Greater),
);
test(
"1208925819614629174706176",
-1.2089258e24,
Some(Ordering::Greater),
);
test(
"1208925819614629174706177",
-1.2089258e24,
Some(Ordering::Greater),
);
}
#[allow(clippy::trait_duplication_in_bounds)]
fn partial_cmp_primitive_float_properties_helper<
T: PartialOrd<Natural> + PartialOrd<rug::Integer> + PrimitiveFloat,
>()
where
Natural: TryFrom<T> + PartialOrd<T>,
rug::Integer: PartialOrd<T>,
{
natural_primitive_float_pair_gen::<T>().test_properties(|(n, u)| {
let cmp = n.partial_cmp(&u);
assert_eq!(rug::Integer::from(&n).partial_cmp(&u), cmp);
let cmp_rev = cmp.map(Ordering::reverse);
assert_eq!(u.partial_cmp(&n), cmp_rev);
assert_eq!(u.partial_cmp(&rug::Integer::from(&n)), cmp_rev);
});
natural_natural_primitive_float_triple_gen::<T>().test_properties(|(n, m, u)| {
if n < u && u < m {
assert_eq!(n.cmp(&m), Ordering::Less);
} else if n > u && u > m {
assert_eq!(n.cmp(&m), Ordering::Greater);
}
});
natural_primitive_float_primitive_float_triple_gen::<T>().test_properties(|(n, u, v)| {
if u < n && n < v {
assert!(u < v);
} else if u > n && n > v {
assert!(u > v);
}
});
natural_gen().test_properties(|x| {
assert!(x >= T::ZERO);
assert!(x > T::NEGATIVE_INFINITY);
assert!(x < T::POSITIVE_INFINITY);
});
}
#[test]
fn partial_cmp_primitive_float_properties() {
apply_fn_to_primitive_floats!(partial_cmp_primitive_float_properties_helper);
}