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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::test_util::generators::primitive_float_gen_var_12;
use std::panic::catch_unwind;
fn precision_helper<T: PrimitiveFloat>() {
let test = |n: T, out| {
assert_eq!(n.precision(), out);
};
test(T::ONE, 1);
test(T::NEGATIVE_ONE, 1);
test(T::from(3.0), 2);
test(T::from(1.5), 2);
test(T::from(1.234), 23);
test(T::from(-1.234), 23);
}
#[test]
fn test_precision() {
apply_fn_to_primitive_floats!(precision_helper);
}
fn precision_fail_helper<T: PrimitiveFloat>() {
assert_panic!(T::NAN.precision());
assert_panic!(T::INFINITY.precision());
assert_panic!(T::NEGATIVE_INFINITY.precision());
assert_panic!(T::ZERO.precision());
assert_panic!(T::NEGATIVE_ZERO.precision());
}
#[test]
pub fn precision_fail() {
apply_fn_to_primitive_floats!(precision_fail_helper);
}
fn precision_properties_helper<T: PrimitiveFloat>() {
primitive_float_gen_var_12::<T>().test_properties(|x| {
let precision = x.precision();
assert_ne!(precision, 0);
assert!(precision <= T::max_precision_for_sci_exponent(x.sci_exponent()));
assert_eq!((-x).precision(), precision);
});
}
#[test]
fn precision_properties() {
apply_fn_to_primitive_floats!(precision_properties_helper);
}
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