| #![allow(deprecated)] |
| |
| extern crate num_traits; |
| extern crate ordered_float; |
| |
| pub use ordered_float::*; |
| pub use num_traits::{Bounded, Float, FromPrimitive, Num, One, Signed, ToPrimitive, Zero}; |
| pub use std::cmp::Ordering::*; |
| pub use std::{f32, f64, panic}; |
| |
| pub use std::collections::hash_map::RandomState; |
| pub use std::collections::HashSet; |
| pub use std::hash::*; |
| |
| #[test] |
| fn ordered_f32_compare_regular_floats() { |
| assert_eq!(OrderedFloat(7.0f32).cmp(&OrderedFloat(7.0)), Equal); |
| assert_eq!(OrderedFloat(8.0f32).cmp(&OrderedFloat(7.0)), Greater); |
| assert_eq!(OrderedFloat(4.0f32).cmp(&OrderedFloat(7.0)), Less); |
| } |
| |
| #[test] |
| fn ordered_f32_compare_regular_floats_op() { |
| assert!(OrderedFloat(7.0f32) == OrderedFloat(7.0)); |
| assert!(OrderedFloat(7.0f32) <= OrderedFloat(7.0)); |
| assert!(OrderedFloat(7.0f32) >= OrderedFloat(7.0)); |
| assert!(OrderedFloat(8.0f32) > OrderedFloat(7.0)); |
| assert!(OrderedFloat(8.0f32) >= OrderedFloat(7.0)); |
| assert!(OrderedFloat(4.0f32) < OrderedFloat(7.0)); |
| assert!(OrderedFloat(4.0f32) <= OrderedFloat(7.0)); |
| } |
| |
| #[test] |
| fn ordered_f32_compare_nan() { |
| let f32_nan: f32 = Float::nan(); |
| assert_eq!(OrderedFloat(f32_nan).cmp(&OrderedFloat(Float::nan())), Equal); |
| assert_eq!(OrderedFloat(f32_nan).cmp(&OrderedFloat(-100000.0f32)), Greater); |
| assert_eq!(OrderedFloat(-100.0f32).cmp(&OrderedFloat(Float::nan())), Less); |
| } |
| |
| #[test] |
| fn ordered_f32_compare_nan_op() { |
| let f32_nan: OrderedFloat<f32> = OrderedFloat(Float::nan()); |
| assert!(f32_nan == f32_nan); |
| assert!(f32_nan <= f32_nan); |
| assert!(f32_nan >= f32_nan); |
| assert!(f32_nan > OrderedFloat(-100000.0f32)); |
| assert!(f32_nan >= OrderedFloat(-100000.0f32)); |
| assert!(OrderedFloat(-100.0f32) < f32_nan); |
| assert!(OrderedFloat(-100.0f32) <= f32_nan); |
| assert!(f32_nan > OrderedFloat(Float::infinity())); |
| assert!(f32_nan >= OrderedFloat(Float::infinity())); |
| assert!(f32_nan > OrderedFloat(Float::neg_infinity())); |
| assert!(f32_nan >= OrderedFloat(Float::neg_infinity())); |
| } |
| |
| #[test] |
| fn ordered_f64_compare_regular_floats() { |
| assert_eq!(OrderedFloat(7.0f64).cmp(&OrderedFloat(7.0)), Equal); |
| assert_eq!(OrderedFloat(8.0f64).cmp(&OrderedFloat(7.0)), Greater); |
| assert_eq!(OrderedFloat(4.0f64).cmp(&OrderedFloat(7.0)), Less); |
| } |
| |
| #[test] |
| fn not_nan32_zero() { |
| assert_eq!(NotNaN::<f32>::zero(), NotNaN::from(0.0f32)); |
| assert!(NotNaN::<f32>::zero().is_zero()); |
| } |
| |
| #[test] |
| fn not_nan32_one() { |
| assert_eq!(NotNaN::<f32>::one(), NotNaN::from(1.0f32)) |
| } |
| |
| #[test] |
| fn not_nan32_bounded() { |
| assert_eq!(NotNaN::<f32>::min_value(), NotNaN::from(<f32 as Bounded>::min_value())); |
| assert_eq!(NotNaN::<f32>::max_value(), NotNaN::from(<f32 as Bounded>::max_value())); |
| } |
| |
| #[test] |
| fn not_nan32_from_primitive() { |
| assert_eq!(NotNaN::<f32>::from_i8(42i8), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_u8(42u8), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_i16(42i16), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_u16(42u16), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_i32(42i32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_u32(42u32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_i64(42i64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_u64(42u64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_isize(42isize), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_usize(42usize), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_f32(42f32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_f32(42f32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f32>::from_f32(Float::nan()), None); |
| assert_eq!(NotNaN::<f32>::from_f64(Float::nan()), None); |
| } |
| |
| #[test] |
| fn not_nan32_to_primitive() { |
| let x = NotNaN::from(42.0f32); |
| assert_eq!(x.to_u8(), Some(42u8)); |
| assert_eq!(x.to_i8(), Some(42i8)); |
| assert_eq!(x.to_u16(), Some(42u16)); |
| assert_eq!(x.to_i16(), Some(42i16)); |
| assert_eq!(x.to_u32(), Some(42u32)); |
| assert_eq!(x.to_i32(), Some(42i32)); |
| assert_eq!(x.to_u64(), Some(42u64)); |
| assert_eq!(x.to_i64(), Some(42i64)); |
| assert_eq!(x.to_usize(), Some(42usize)); |
| assert_eq!(x.to_isize(), Some(42isize)); |
| assert_eq!(x.to_f32(), Some(42f32)); |
| assert_eq!(x.to_f32(), Some(42f32)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| } |
| |
| #[test] |
| fn not_nan32_num() { |
| assert_eq!(NotNaN::<f32>::from_str_radix("42.0", 10).unwrap(), NotNaN::from(42.0f32)); |
| assert!(NotNaN::<f32>::from_str_radix("NaN", 10).is_err()); |
| } |
| |
| #[test] |
| fn not_nan32_signed() { |
| assert_eq!(NotNaN::from(42f32).abs(), NotNaN::from(42f32)); |
| assert_eq!(NotNaN::from(-42f32).abs(), NotNaN::from(42f32)); |
| |
| assert_eq!(NotNaN::from(50f32).abs_sub(&NotNaN::from(8f32)), NotNaN::from(42f32)); |
| assert_eq!(NotNaN::from(8f32).abs_sub(&NotNaN::from(50f32)), NotNaN::from(0f32)); |
| } |
| |
| #[test] |
| fn not_nan32_num_cast() { |
| assert_eq!(<NotNaN<f32> as num_traits::NumCast>::from(42), Some(NotNaN::from(42f32))); |
| assert_eq!(<NotNaN<f32> as num_traits::NumCast>::from(f32::nan()), None); |
| } |
| |
| #[test] |
| fn ordered_f64_compare_nan() { |
| let f64_nan: f64 = Float::nan(); |
| assert_eq!( |
| OrderedFloat(f64_nan).cmp(&OrderedFloat(Float::nan())), |
| Equal |
| ); |
| assert_eq!( |
| OrderedFloat(f64_nan).cmp(&OrderedFloat(-100000.0f64)), |
| Greater |
| ); |
| assert_eq!( |
| OrderedFloat(-100.0f64).cmp(&OrderedFloat(Float::nan())), |
| Less |
| ); |
| } |
| |
| #[test] |
| fn ordered_f64_compare_regular_floats_op() { |
| assert!(OrderedFloat(7.0) == OrderedFloat(7.0)); |
| assert!(OrderedFloat(7.0) <= OrderedFloat(7.0)); |
| assert!(OrderedFloat(7.0) >= OrderedFloat(7.0)); |
| assert!(OrderedFloat(8.0) > OrderedFloat(7.0)); |
| assert!(OrderedFloat(8.0) >= OrderedFloat(7.0)); |
| assert!(OrderedFloat(4.0) < OrderedFloat(7.0)); |
| assert!(OrderedFloat(4.0) <= OrderedFloat(7.0)); |
| } |
| |
| #[test] |
| fn ordered_f64_compare_nan_op() { |
| let f64_nan: OrderedFloat<f64> = OrderedFloat(Float::nan()); |
| assert!(f64_nan == f64_nan); |
| assert!(f64_nan <= f64_nan); |
| assert!(f64_nan >= f64_nan); |
| assert!(f64_nan > OrderedFloat(-100000.0)); |
| assert!(f64_nan >= OrderedFloat(-100000.0)); |
| assert!(OrderedFloat(-100.0) < f64_nan); |
| assert!(OrderedFloat(-100.0) <= f64_nan); |
| assert!(f64_nan > OrderedFloat(Float::infinity())); |
| assert!(f64_nan >= OrderedFloat(Float::infinity())); |
| assert!(f64_nan > OrderedFloat(Float::neg_infinity())); |
| assert!(f64_nan >= OrderedFloat(Float::neg_infinity())); |
| } |
| |
| #[test] |
| fn not_nan32_compare_regular_floats() { |
| assert_eq!(NotNaN::from(7.0f32).cmp(&NotNaN::from(7.0)), Equal); |
| assert_eq!(NotNaN::from(8.0f32).cmp(&NotNaN::from(7.0)), Greater); |
| assert_eq!(NotNaN::from(4.0f32).cmp(&NotNaN::from(7.0)), Less); |
| } |
| |
| #[test] |
| fn not_nan32_fail_when_constructing_with_nan() { |
| let f32_nan: f32 = Float::nan(); |
| assert!(NotNaN::new(f32_nan).is_err()); |
| } |
| |
| #[test] |
| fn not_nan32_calculate_correctly() { |
| assert_eq!( |
| *(NotNaN::from(5.0f32) + NotNaN::from(4.0f32)), |
| 5.0f32 + 4.0f32 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f32) + 4.0f32), 5.0f32 + 4.0f32); |
| assert_eq!( |
| *(NotNaN::from(5.0f32) - NotNaN::from(4.0f32)), |
| 5.0f32 - 4.0f32 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f32) - 4.0f32), 5.0f32 - 4.0f32); |
| assert_eq!( |
| *(NotNaN::from(5.0f32) * NotNaN::from(4.0f32)), |
| 5.0f32 * 4.0f32 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f32) * 4.0f32), 5.0f32 * 4.0f32); |
| assert_eq!( |
| *(NotNaN::from(8.0f32) / NotNaN::from(4.0f32)), |
| 8.0f32 / 4.0f32 |
| ); |
| assert_eq!(*(NotNaN::from(8.0f32) / 4.0f32), 8.0f32 / 4.0f32); |
| assert_eq!( |
| *(NotNaN::from(8.0f32) % NotNaN::from(4.0f32)), |
| 8.0f32 % 4.0f32 |
| ); |
| assert_eq!(*(NotNaN::from(8.0f32) % 4.0f32), 8.0f32 % 4.0f32); |
| assert_eq!(*(-NotNaN::from(1.0f32)), -1.0f32); |
| |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f32) + f32::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f32) - f32::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f32) * f32::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f32) / f32::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f32) % f32::NAN).is_err()); |
| |
| let mut number = NotNaN::from(5.0f32); |
| number += NotNaN::from(4.0f32); |
| assert_eq!(*number, 9.0f32); |
| number -= NotNaN::from(4.0f32); |
| assert_eq!(*number, 5.0f32); |
| number *= NotNaN::from(4.0f32); |
| assert_eq!(*number, 20.0f32); |
| number /= NotNaN::from(4.0f32); |
| assert_eq!(*number, 5.0f32); |
| number %= NotNaN::from(4.0f32); |
| assert_eq!(*number, 1.0f32); |
| |
| number = NotNaN::from(5.0f32); |
| number += 4.0f32; |
| assert_eq!(*number, 9.0f32); |
| number -= 4.0f32; |
| assert_eq!(*number, 5.0f32); |
| number *= 4.0f32; |
| assert_eq!(*number, 20.0f32); |
| number /= 4.0f32; |
| assert_eq!(*number, 5.0f32); |
| number %= 4.0f32; |
| assert_eq!(*number, 1.0f32); |
| |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f32); |
| tmp += f32::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f32); |
| tmp -= f32::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f32); |
| tmp *= f32::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f32); |
| tmp /= f32::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f32); |
| tmp %= f32::NAN; |
| }).is_err() |
| ); |
| } |
| |
| #[test] |
| fn not_nan64_compare_regular_floats() { |
| assert_eq!(NotNaN::from(7.0f64).cmp(&NotNaN::from(7.0)), Equal); |
| assert_eq!(NotNaN::from(8.0f64).cmp(&NotNaN::from(7.0)), Greater); |
| assert_eq!(NotNaN::from(4.0f64).cmp(&NotNaN::from(7.0)), Less); |
| } |
| |
| #[test] |
| fn not_nan64_fail_when_constructing_with_nan() { |
| let f64_nan: f64 = Float::nan(); |
| assert!(NotNaN::new(f64_nan).is_err()); |
| } |
| |
| #[test] |
| fn not_nan64_calculate_correctly() { |
| assert_eq!( |
| *(NotNaN::from(5.0f64) + NotNaN::from(4.0f64)), |
| 5.0f64 + 4.0f64 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f64) + 4.0f64), 5.0f64 + 4.0f64); |
| assert_eq!( |
| *(NotNaN::from(5.0f64) - NotNaN::from(4.0f64)), |
| 5.0f64 - 4.0f64 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f64) - 4.0f64), 5.0f64 - 4.0f64); |
| assert_eq!( |
| *(NotNaN::from(5.0f64) * NotNaN::from(4.0f64)), |
| 5.0f64 * 4.0f64 |
| ); |
| assert_eq!(*(NotNaN::from(5.0f64) * 4.0f64), 5.0f64 * 4.0f64); |
| assert_eq!( |
| *(NotNaN::from(8.0f64) / NotNaN::from(4.0f64)), |
| 8.0f64 / 4.0f64 |
| ); |
| assert_eq!(*(NotNaN::from(8.0f64) / 4.0f64), 8.0f64 / 4.0f64); |
| assert_eq!( |
| *(NotNaN::from(8.0f64) % NotNaN::from(4.0f64)), |
| 8.0f64 % 4.0f64 |
| ); |
| assert_eq!(*(NotNaN::from(8.0f64) % 4.0f64), 8.0f64 % 4.0f64); |
| assert_eq!(*(-NotNaN::from(1.0f64)), -1.0f64); |
| |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f64) + f64::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f64) - f64::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f64) * f64::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f64) / f64::NAN).is_err()); |
| assert!(panic::catch_unwind(|| NotNaN::from(0.0f64) % f64::NAN).is_err()); |
| |
| let mut number = NotNaN::from(5.0f64); |
| number += NotNaN::from(4.0f64); |
| assert_eq!(*number, 9.0f64); |
| number -= NotNaN::from(4.0f64); |
| assert_eq!(*number, 5.0f64); |
| number *= NotNaN::from(4.0f64); |
| assert_eq!(*number, 20.0f64); |
| number /= NotNaN::from(4.0f64); |
| assert_eq!(*number, 5.0f64); |
| number %= NotNaN::from(4.0f64); |
| assert_eq!(*number, 1.0f64); |
| |
| number = NotNaN::from(5.0f64); |
| number += 4.0f64; |
| assert_eq!(*number, 9.0f64); |
| number -= 4.0f64; |
| assert_eq!(*number, 5.0f64); |
| number *= 4.0f64; |
| assert_eq!(*number, 20.0f64); |
| number /= 4.0f64; |
| assert_eq!(*number, 5.0f64); |
| number %= 4.0f64; |
| assert_eq!(*number, 1.0f64); |
| |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f64); |
| tmp += f64::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f64); |
| tmp -= f64::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f64); |
| tmp *= f64::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f64); |
| tmp /= f64::NAN; |
| }).is_err() |
| ); |
| assert!( |
| panic::catch_unwind(|| { |
| let mut tmp = NotNaN::from(0.0f64); |
| tmp %= f64::NAN; |
| }).is_err() |
| ); |
| } |
| |
| #[test] |
| fn not_nan64_zero() { |
| assert_eq!(NotNaN::<f64>::zero(), NotNaN::from(0.0f64)); |
| assert!(NotNaN::<f64>::zero().is_zero()); |
| } |
| |
| #[test] |
| fn not_nan64_one() { |
| assert_eq!(NotNaN::<f64>::one(), NotNaN::from(1.0f64)) |
| } |
| |
| #[test] |
| fn not_nan64_bounded() { |
| assert_eq!(NotNaN::<f64>::min_value(), NotNaN::from(<f64 as Bounded>::min_value())); |
| assert_eq!(NotNaN::<f64>::max_value(), NotNaN::from(<f64 as Bounded>::max_value())); |
| } |
| |
| #[test] |
| fn not_nan64_from_primitive() { |
| assert_eq!(NotNaN::<f64>::from_i8(42i8), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_u8(42u8), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_i16(42i16), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_u16(42u16), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_i32(42i32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_u32(42u32), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_i64(42i64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_u64(42u64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_isize(42isize), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_usize(42usize), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_f64(42f64), Some(NotNaN::from(42.0))); |
| assert_eq!(NotNaN::<f64>::from_f64(Float::nan()), None); |
| assert_eq!(NotNaN::<f64>::from_f64(Float::nan()), None); |
| } |
| |
| #[test] |
| fn not_nan64_to_primitive() { |
| let x = NotNaN::from(42.0f64); |
| assert_eq!(x.to_u8(), Some(42u8)); |
| assert_eq!(x.to_i8(), Some(42i8)); |
| assert_eq!(x.to_u16(), Some(42u16)); |
| assert_eq!(x.to_i16(), Some(42i16)); |
| assert_eq!(x.to_u32(), Some(42u32)); |
| assert_eq!(x.to_i32(), Some(42i32)); |
| assert_eq!(x.to_u64(), Some(42u64)); |
| assert_eq!(x.to_i64(), Some(42i64)); |
| assert_eq!(x.to_usize(), Some(42usize)); |
| assert_eq!(x.to_isize(), Some(42isize)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| assert_eq!(x.to_f64(), Some(42f64)); |
| } |
| |
| #[test] |
| fn not_nan64_num() { |
| assert_eq!(NotNaN::<f64>::from_str_radix("42.0", 10).unwrap(), NotNaN::from(42.0f64)); |
| assert!(NotNaN::<f64>::from_str_radix("NaN", 10).is_err()); |
| } |
| |
| #[test] |
| fn not_nan64_signed() { |
| assert_eq!(NotNaN::from(42f64).abs(), NotNaN::from(42f64)); |
| assert_eq!(NotNaN::from(-42f64).abs(), NotNaN::from(42f64)); |
| |
| assert_eq!(NotNaN::from(50f64).abs_sub(&NotNaN::from(8f64)), NotNaN::from(42f64)); |
| assert_eq!(NotNaN::from(8f64).abs_sub(&NotNaN::from(50f64)), NotNaN::from(0f64)); |
| } |
| |
| #[test] |
| fn not_nan64_num_cast() { |
| assert_eq!(<NotNaN<f64> as num_traits::NumCast>::from(42), Some(NotNaN::from(42f64))); |
| assert_eq!(<NotNaN<f64> as num_traits::NumCast>::from(f64::nan()), None); |
| } |
| |
| #[test] |
| fn hash_zero_and_neg_zero_to_the_same_hc() { |
| let state = RandomState::new(); |
| let mut h1 = state.build_hasher(); |
| let mut h2 = state.build_hasher(); |
| OrderedFloat::from(0f64).hash(&mut h1); |
| OrderedFloat::from(-0f64).hash(&mut h2); |
| assert_eq!(h1.finish(), h2.finish()); |
| } |
| |
| #[test] |
| fn hash_inf_and_neg_inf_to_different_hcs() { |
| let state = RandomState::new(); |
| let mut h1 = state.build_hasher(); |
| let mut h2 = state.build_hasher(); |
| OrderedFloat::from(f64::INFINITY).hash(&mut h1); |
| OrderedFloat::from(f64::NEG_INFINITY).hash(&mut h2); |
| assert!(h1.finish() != h2.finish()); |
| } |
| |
| #[test] |
| fn hash_is_good_for_whole_numbers() { |
| let state = RandomState::new(); |
| let limit = 10000; |
| |
| let mut set = ::std::collections::HashSet::with_capacity(limit); |
| for i in 0..limit { |
| let mut h = state.build_hasher(); |
| OrderedFloat::from(i as f64).hash(&mut h); |
| set.insert(h.finish()); |
| } |
| |
| // This allows 100 collisions, which is far too |
| // many, but should guard against transient issues |
| // that will result from using RandomState |
| let pct_unique = set.len() as f64 / limit as f64; |
| assert!(0.99f64 < pct_unique, "percent-unique={}", pct_unique); |
| } |
| |
| #[test] |
| fn hash_is_good_for_fractional_numbers() { |
| let state = RandomState::new(); |
| let limit = 10000; |
| |
| let mut set = ::std::collections::HashSet::with_capacity(limit); |
| for i in 0..limit { |
| let mut h = state.build_hasher(); |
| OrderedFloat::from(i as f64 * (1f64 / limit as f64)).hash(&mut h); |
| set.insert(h.finish()); |
| } |
| |
| // This allows 100 collisions, which is far too |
| // many, but should guard against transient issues |
| // that will result from using RandomState |
| let pct_unique = set.len() as f64 / limit as f64; |
| assert!(0.99f64 < pct_unique, "percent-unique={}", pct_unique); |
| } |
