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// Copyright © 2024 Mikhail Hogrefe
//
// This file is part of Malachite.
//
// Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License (LGPL) as published by the Free Software Foundation; either version
// 3 of the License, or (at your option) any later version. See <https://www.gnu.org/licenses/>.
use malachite_base::num::basic::floats::PrimitiveFloat;
use malachite_base::num::basic::traits::NegativeInfinity;
use malachite_base::num::float::NiceFloat;
use malachite_base::test_util::generators::{
primitive_float_gen_var_11, primitive_float_pair_gen_var_1,
};
use std::panic::catch_unwind;
#[allow(clippy::approx_constant)]
#[test]
pub fn test_to_ordered_representation() {
fn test<T: PrimitiveFloat>(x: T, out: u64) {
assert_eq!(x.to_ordered_representation(), out);
}
test::<f32>(f32::NEGATIVE_INFINITY, 0);
test::<f32>(-f32::MAX_FINITE, 1);
test::<f32>(-458.42188, 1000000000);
test::<f32>(-10.0, 1046478848);
test::<f32>(-core::f32::consts::PI, 1060565029);
test::<f32>(-1.0, 1073741824);
test::<f32>(-0.1, 1102263091);
test::<f32>(-f32::MIN_POSITIVE_NORMAL, 2130706432);
test::<f32>(-f32::MAX_SUBNORMAL, 2130706433);
test::<f32>(-f32::MIN_POSITIVE_SUBNORMAL, 2139095039);
test::<f32>(-0.0, 2139095040);
test::<f32>(0.0, 2139095041);
test::<f32>(f32::MIN_POSITIVE_SUBNORMAL, 2139095042);
test::<f32>(f32::MAX_SUBNORMAL, 2147483648);
test::<f32>(f32::MIN_POSITIVE_NORMAL, 2147483649);
test::<f32>(0.1, 3175926990);
test::<f32>(0.99999994, 3204448256);
test::<f32>(1.0, 3204448257);
test::<f32>(1.0000001, 3204448258);
test::<f32>(3.1415925, 3217625051);
test::<f32>(core::f32::consts::PI, 3217625052);
test::<f32>(3.141593, 3217625053);
test::<f32>(10.0, 3231711233);
test::<f32>(f32::MAX_FINITE, 4278190080);
test::<f32>(f32::INFINITY, 4278190081);
test::<f64>(f64::NEGATIVE_INFINITY, 0);
test::<f64>(-f64::MAX_FINITE, 1);
test::<f64>(-10.0, 4597049319638433792);
test::<f64>(-core::f64::consts::PI, 4604611780675359464);
test::<f64>(-1.0, 4611686018427387904);
test::<f64>(-0.1, 4626998257160447590);
test::<f64>(-f64::MIN_POSITIVE_NORMAL, 9214364837600034816);
test::<f64>(-f64::MAX_SUBNORMAL, 9214364837600034817);
test::<f64>(-f64::MIN_POSITIVE_SUBNORMAL, 9218868437227405311);
test::<f64>(-0.0, 9218868437227405312);
test::<f64>(0.0, 9218868437227405313);
test::<f64>(f64::MIN_POSITIVE_SUBNORMAL, 9218868437227405314);
test::<f64>(f64::MAX_SUBNORMAL, 9223372036854775808);
test::<f64>(f64::MIN_POSITIVE_NORMAL, 9223372036854775809);
test::<f64>(1.9261352099337372e-256, 10000000000000000000);
test::<f64>(0.1, 13810738617294363035);
test::<f64>(0.9999999999999999, 13826050856027422720);
test::<f64>(1.0, 13826050856027422721);
test::<f64>(1.0000000000000002, 13826050856027422722);
test::<f64>(3.1415926535897927, 13833125093779451160);
test::<f64>(core::f64::consts::PI, 13833125093779451161);
test::<f64>(3.1415926535897936, 13833125093779451162);
test::<f64>(10.0, 13840687554816376833);
test::<f64>(f64::MAX_FINITE, 18437736874454810624);
test::<f64>(f64::INFINITY, 18437736874454810625);
}
fn to_ordered_representation_fail_helper<T: PrimitiveFloat>() {
assert_panic!(T::NAN.to_ordered_representation());
}
#[test]
pub fn to_ordered_representation_fail() {
apply_fn_to_primitive_floats!(to_ordered_representation_fail_helper);
}
fn to_ordered_representation_properties_helper<T: PrimitiveFloat>() {
primitive_float_gen_var_11::<T>().test_properties(|x| {
let i = x.to_ordered_representation();
assert!(i <= T::LARGEST_ORDERED_REPRESENTATION);
assert_eq!(NiceFloat(T::from_ordered_representation(i)), NiceFloat(x));
});
primitive_float_pair_gen_var_1::<T>().test_properties(|(x, y)| {
assert_eq!(
NiceFloat(x).cmp(&NiceFloat(y)),
x.to_ordered_representation()
.cmp(&y.to_ordered_representation())
);
});
}
#[test]
fn to_ordered_representation_properties() {
apply_fn_to_primitive_floats!(to_ordered_representation_properties_helper);
}
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