// 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 . use malachite_base::num::basic::floats::PrimitiveFloat; use malachite_base::num::basic::signeds::PrimitiveSigned; use malachite_base::num::float::NiceFloat; use malachite_base::test_util::generators::{primitive_float_gen, signed_gen_var_1}; fn neg_assign_helper_signed() { let test = |n: T, out| { let mut n = n; n.neg_assign(); assert_eq!(n, out); }; test(T::ZERO, T::ZERO); test(T::ONE, T::NEGATIVE_ONE); test(T::exact_from(100), T::exact_from(-100)); test(T::NEGATIVE_ONE, T::ONE); test(T::exact_from(-100), T::exact_from(100)); } fn neg_assign_helper_primitive_float() { let test = |x: T, out| { let mut x = x; x.neg_assign(); assert_eq!(NiceFloat(x), NiceFloat(out)); }; test(T::ZERO, T::NEGATIVE_ZERO); test(T::NEGATIVE_ZERO, T::ZERO); test(T::INFINITY, T::NEGATIVE_INFINITY); test(T::NEGATIVE_INFINITY, T::INFINITY); test(T::NAN, T::NAN); test(T::ONE, T::NEGATIVE_ONE); test(T::from(100.0), T::from(-100.0)); test(T::NEGATIVE_ONE, T::ONE); test(T::from(-100.0), T::from(100.0)); } #[test] fn test_neg_assign() { apply_fn_to_signeds!(neg_assign_helper_signed); apply_fn_to_primitive_floats!(neg_assign_helper_primitive_float); } fn neg_assign_properties_helper_signed() { signed_gen_var_1::().test_properties(|n| { let mut neg = n; neg.neg_assign(); assert_eq!(neg, -n); assert_eq!(-neg, n); assert_eq!(neg == n, n == T::ZERO); assert_eq!(n + neg, T::ZERO); }); } fn neg_assign_properties_helper_primitive_float() { primitive_float_gen::().test_properties(|x| { let mut neg = x; neg.neg_assign(); assert_eq!(NiceFloat(neg), NiceFloat(-x)); assert_eq!(NiceFloat(-neg), NiceFloat(x)); assert_eq!(NiceFloat(neg) == NiceFloat(x), x.is_nan()); if x.is_finite() { assert_eq!(x + neg, T::ZERO); } }); } #[test] fn neg_assign_properties() { apply_fn_to_signeds!(neg_assign_properties_helper_signed); apply_fn_to_primitive_floats!(neg_assign_properties_helper_primitive_float); }