// 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::integers::PrimitiveInt; use malachite_base::num::basic::signeds::PrimitiveSigned; use malachite_base::num::basic::unsigneds::PrimitiveUnsigned; use malachite_base::test_util::generators::{primitive_float_gen, signed_gen, unsigned_gen}; use std::cmp::Ordering::*; fn sign_helper_primitive_int() { let test = |n: T, out| { assert_eq!(n.sign(), out); }; test(T::ZERO, Equal); test(T::ONE, Greater); test(T::exact_from(100), Greater); test(T::MAX, Greater); } fn sign_helper_signed() { let test = |n: T, out| { assert_eq!(n.sign(), out); }; test(T::NEGATIVE_ONE, Less); test(T::exact_from(-100), Less); test(T::MIN, Less); } fn sign_helper_primitive_float() { let test = |n: T, out| { assert_eq!(n.sign(), out); }; test(T::ZERO, Greater); test(T::NEGATIVE_ZERO, Less); test(T::ONE, Greater); test(T::NEGATIVE_ONE, Less); test(T::INFINITY, Greater); test(T::NEGATIVE_INFINITY, Less); test(T::NAN, Equal); } #[test] fn test_sign() { apply_fn_to_primitive_ints!(sign_helper_primitive_int); apply_fn_to_signeds!(sign_helper_signed); apply_fn_to_primitive_floats!(sign_helper_primitive_float); } fn sign_properties_helper_unsigned() { unsigned_gen::().test_properties(|n| { let sign = n.sign(); assert_ne!(sign, Less); assert_eq!(n.partial_cmp(&T::ZERO), Some(sign)); }); } fn sign_properties_helper_signed() { signed_gen::().test_properties(|n| { let sign = n.sign(); assert_eq!(n.partial_cmp(&T::ZERO), Some(sign)); if n != T::MIN { assert_eq!((-n).sign(), sign.reverse()); } }); } fn sign_properties_helper_primitive_float() { primitive_float_gen::().test_properties(|f| { let sign = f.sign(); if !f.is_nan() { assert_eq!((-f).sign(), sign.reverse()); } }); } #[test] fn sign_properties() { apply_fn_to_unsigneds!(sign_properties_helper_unsigned); apply_fn_to_signeds!(sign_properties_helper_signed); apply_fn_to_primitive_floats!(sign_properties_helper_primitive_float); }