diff options
Diffstat (limited to 'library/std/tests/floats/f64.rs')
| -rw-r--r-- | library/std/tests/floats/f64.rs | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/library/std/tests/floats/f64.rs b/library/std/tests/floats/f64.rs index de9c27eb33d..2d8dd1cf091 100644 --- a/library/std/tests/floats/f64.rs +++ b/library/std/tests/floats/f64.rs @@ -1,26 +1,4 @@ use std::f64::consts; -use std::num::FpCategory as Fp; - -/// Smallest number -const TINY_BITS: u64 = 0x1; - -/// Next smallest number -const TINY_UP_BITS: u64 = 0x2; - -/// Exponent = 0b11...10, Sifnificand 0b1111..10. Min val > 0 -const MAX_DOWN_BITS: u64 = 0x7fef_ffff_ffff_fffe; - -/// Zeroed exponent, full significant -const LARGEST_SUBNORMAL_BITS: u64 = 0x000f_ffff_ffff_ffff; - -/// Exponent = 0b1, zeroed significand -const SMALLEST_NORMAL_BITS: u64 = 0x0010_0000_0000_0000; - -/// First pattern over the mantissa -const NAN_MASK1: u64 = 0x000a_aaaa_aaaa_aaaa; - -/// Second pattern over the mantissa -const NAN_MASK2: u64 = 0x0005_5555_5555_5555; #[allow(unused_macros)] macro_rules! assert_f64_biteq { @@ -34,411 +12,6 @@ macro_rules! assert_f64_biteq { } #[test] -fn test_num_f64() { - crate::test_num(10f64, 2f64); -} - -#[test] -fn test_min_nan() { - assert_eq!(f64::NAN.min(2.0), 2.0); - assert_eq!(2.0f64.min(f64::NAN), 2.0); -} - -#[test] -fn test_max_nan() { - assert_eq!(f64::NAN.max(2.0), 2.0); - assert_eq!(2.0f64.max(f64::NAN), 2.0); -} - -#[test] -fn test_nan() { - let nan: f64 = f64::NAN; - assert!(nan.is_nan()); - assert!(!nan.is_infinite()); - assert!(!nan.is_finite()); - assert!(!nan.is_normal()); - assert!(nan.is_sign_positive()); - assert!(!nan.is_sign_negative()); - assert_eq!(Fp::Nan, nan.classify()); - // Ensure the quiet bit is set. - assert!(nan.to_bits() & (1 << (f64::MANTISSA_DIGITS - 2)) != 0); -} - -#[test] -fn test_infinity() { - let inf: f64 = f64::INFINITY; - assert!(inf.is_infinite()); - assert!(!inf.is_finite()); - assert!(inf.is_sign_positive()); - assert!(!inf.is_sign_negative()); - assert!(!inf.is_nan()); - assert!(!inf.is_normal()); - assert_eq!(Fp::Infinite, inf.classify()); -} - -#[test] -fn test_neg_infinity() { - let neg_inf: f64 = f64::NEG_INFINITY; - assert!(neg_inf.is_infinite()); - assert!(!neg_inf.is_finite()); - assert!(!neg_inf.is_sign_positive()); - assert!(neg_inf.is_sign_negative()); - assert!(!neg_inf.is_nan()); - assert!(!neg_inf.is_normal()); - assert_eq!(Fp::Infinite, neg_inf.classify()); -} - -#[test] -fn test_zero() { - let zero: f64 = 0.0f64; - assert_eq!(0.0, zero); - assert!(!zero.is_infinite()); - assert!(zero.is_finite()); - assert!(zero.is_sign_positive()); - assert!(!zero.is_sign_negative()); - assert!(!zero.is_nan()); - assert!(!zero.is_normal()); - assert_eq!(Fp::Zero, zero.classify()); -} - -#[test] -fn test_neg_zero() { - let neg_zero: f64 = -0.0; - assert_eq!(0.0, neg_zero); - assert!(!neg_zero.is_infinite()); - assert!(neg_zero.is_finite()); - assert!(!neg_zero.is_sign_positive()); - assert!(neg_zero.is_sign_negative()); - assert!(!neg_zero.is_nan()); - assert!(!neg_zero.is_normal()); - assert_eq!(Fp::Zero, neg_zero.classify()); -} - -#[test] -fn test_one() { - let one: f64 = 1.0f64; - assert_eq!(1.0, one); - assert!(!one.is_infinite()); - assert!(one.is_finite()); - assert!(one.is_sign_positive()); - assert!(!one.is_sign_negative()); - assert!(!one.is_nan()); - assert!(one.is_normal()); - assert_eq!(Fp::Normal, one.classify()); -} - -#[test] -fn test_is_nan() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert!(nan.is_nan()); - assert!(!0.0f64.is_nan()); - assert!(!5.3f64.is_nan()); - assert!(!(-10.732f64).is_nan()); - assert!(!inf.is_nan()); - assert!(!neg_inf.is_nan()); -} - -#[test] -fn test_is_infinite() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert!(!nan.is_infinite()); - assert!(inf.is_infinite()); - assert!(neg_inf.is_infinite()); - assert!(!0.0f64.is_infinite()); - assert!(!42.8f64.is_infinite()); - assert!(!(-109.2f64).is_infinite()); -} - -#[test] -fn test_is_finite() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert!(!nan.is_finite()); - assert!(!inf.is_finite()); - assert!(!neg_inf.is_finite()); - assert!(0.0f64.is_finite()); - assert!(42.8f64.is_finite()); - assert!((-109.2f64).is_finite()); -} - -#[test] -fn test_is_normal() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - let zero: f64 = 0.0f64; - let neg_zero: f64 = -0.0; - assert!(!nan.is_normal()); - assert!(!inf.is_normal()); - assert!(!neg_inf.is_normal()); - assert!(!zero.is_normal()); - assert!(!neg_zero.is_normal()); - assert!(1f64.is_normal()); - assert!(1e-307f64.is_normal()); - assert!(!1e-308f64.is_normal()); -} - -#[test] -fn test_classify() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - let zero: f64 = 0.0f64; - let neg_zero: f64 = -0.0; - assert_eq!(nan.classify(), Fp::Nan); - assert_eq!(inf.classify(), Fp::Infinite); - assert_eq!(neg_inf.classify(), Fp::Infinite); - assert_eq!(zero.classify(), Fp::Zero); - assert_eq!(neg_zero.classify(), Fp::Zero); - assert_eq!(1e-307f64.classify(), Fp::Normal); - assert_eq!(1e-308f64.classify(), Fp::Subnormal); -} - -#[test] -fn test_floor() { - assert_approx_eq!(1.0f64.floor(), 1.0f64); - assert_approx_eq!(1.3f64.floor(), 1.0f64); - assert_approx_eq!(1.5f64.floor(), 1.0f64); - assert_approx_eq!(1.7f64.floor(), 1.0f64); - assert_approx_eq!(0.0f64.floor(), 0.0f64); - assert_approx_eq!((-0.0f64).floor(), -0.0f64); - assert_approx_eq!((-1.0f64).floor(), -1.0f64); - assert_approx_eq!((-1.3f64).floor(), -2.0f64); - assert_approx_eq!((-1.5f64).floor(), -2.0f64); - assert_approx_eq!((-1.7f64).floor(), -2.0f64); -} - -#[test] -fn test_ceil() { - assert_approx_eq!(1.0f64.ceil(), 1.0f64); - assert_approx_eq!(1.3f64.ceil(), 2.0f64); - assert_approx_eq!(1.5f64.ceil(), 2.0f64); - assert_approx_eq!(1.7f64.ceil(), 2.0f64); - assert_approx_eq!(0.0f64.ceil(), 0.0f64); - assert_approx_eq!((-0.0f64).ceil(), -0.0f64); - assert_approx_eq!((-1.0f64).ceil(), -1.0f64); - assert_approx_eq!((-1.3f64).ceil(), -1.0f64); - assert_approx_eq!((-1.5f64).ceil(), -1.0f64); - assert_approx_eq!((-1.7f64).ceil(), -1.0f64); -} - -#[test] -fn test_round() { - assert_approx_eq!(2.5f64.round(), 3.0f64); - assert_approx_eq!(1.0f64.round(), 1.0f64); - assert_approx_eq!(1.3f64.round(), 1.0f64); - assert_approx_eq!(1.5f64.round(), 2.0f64); - assert_approx_eq!(1.7f64.round(), 2.0f64); - assert_approx_eq!(0.0f64.round(), 0.0f64); - assert_approx_eq!((-0.0f64).round(), -0.0f64); - assert_approx_eq!((-1.0f64).round(), -1.0f64); - assert_approx_eq!((-1.3f64).round(), -1.0f64); - assert_approx_eq!((-1.5f64).round(), -2.0f64); - assert_approx_eq!((-1.7f64).round(), -2.0f64); -} - -#[test] -fn test_round_ties_even() { - assert_approx_eq!(2.5f64.round_ties_even(), 2.0f64); - assert_approx_eq!(1.0f64.round_ties_even(), 1.0f64); - assert_approx_eq!(1.3f64.round_ties_even(), 1.0f64); - assert_approx_eq!(1.5f64.round_ties_even(), 2.0f64); - assert_approx_eq!(1.7f64.round_ties_even(), 2.0f64); - assert_approx_eq!(0.0f64.round_ties_even(), 0.0f64); - assert_approx_eq!((-0.0f64).round_ties_even(), -0.0f64); - assert_approx_eq!((-1.0f64).round_ties_even(), -1.0f64); - assert_approx_eq!((-1.3f64).round_ties_even(), -1.0f64); - assert_approx_eq!((-1.5f64).round_ties_even(), -2.0f64); - assert_approx_eq!((-1.7f64).round_ties_even(), -2.0f64); -} - -#[test] -fn test_trunc() { - assert_approx_eq!(1.0f64.trunc(), 1.0f64); - assert_approx_eq!(1.3f64.trunc(), 1.0f64); - assert_approx_eq!(1.5f64.trunc(), 1.0f64); - assert_approx_eq!(1.7f64.trunc(), 1.0f64); - assert_approx_eq!(0.0f64.trunc(), 0.0f64); - assert_approx_eq!((-0.0f64).trunc(), -0.0f64); - assert_approx_eq!((-1.0f64).trunc(), -1.0f64); - assert_approx_eq!((-1.3f64).trunc(), -1.0f64); - assert_approx_eq!((-1.5f64).trunc(), -1.0f64); - assert_approx_eq!((-1.7f64).trunc(), -1.0f64); -} - -#[test] -fn test_fract() { - assert_approx_eq!(1.0f64.fract(), 0.0f64); - assert_approx_eq!(1.3f64.fract(), 0.3f64); - assert_approx_eq!(1.5f64.fract(), 0.5f64); - assert_approx_eq!(1.7f64.fract(), 0.7f64); - assert_approx_eq!(0.0f64.fract(), 0.0f64); - assert_approx_eq!((-0.0f64).fract(), -0.0f64); - assert_approx_eq!((-1.0f64).fract(), -0.0f64); - assert_approx_eq!((-1.3f64).fract(), -0.3f64); - assert_approx_eq!((-1.5f64).fract(), -0.5f64); - assert_approx_eq!((-1.7f64).fract(), -0.7f64); -} - -#[test] -fn test_abs() { - assert_eq!(f64::INFINITY.abs(), f64::INFINITY); - assert_eq!(1f64.abs(), 1f64); - assert_eq!(0f64.abs(), 0f64); - assert_eq!((-0f64).abs(), 0f64); - assert_eq!((-1f64).abs(), 1f64); - assert_eq!(f64::NEG_INFINITY.abs(), f64::INFINITY); - assert_eq!((1f64 / f64::NEG_INFINITY).abs(), 0f64); - assert!(f64::NAN.abs().is_nan()); -} - -#[test] -fn test_signum() { - assert_eq!(f64::INFINITY.signum(), 1f64); - assert_eq!(1f64.signum(), 1f64); - assert_eq!(0f64.signum(), 1f64); - assert_eq!((-0f64).signum(), -1f64); - assert_eq!((-1f64).signum(), -1f64); - assert_eq!(f64::NEG_INFINITY.signum(), -1f64); - assert_eq!((1f64 / f64::NEG_INFINITY).signum(), -1f64); - assert!(f64::NAN.signum().is_nan()); -} - -#[test] -fn test_is_sign_positive() { - assert!(f64::INFINITY.is_sign_positive()); - assert!(1f64.is_sign_positive()); - assert!(0f64.is_sign_positive()); - assert!(!(-0f64).is_sign_positive()); - assert!(!(-1f64).is_sign_positive()); - assert!(!f64::NEG_INFINITY.is_sign_positive()); - assert!(!(1f64 / f64::NEG_INFINITY).is_sign_positive()); - assert!(f64::NAN.is_sign_positive()); - assert!(!(-f64::NAN).is_sign_positive()); -} - -#[test] -fn test_is_sign_negative() { - assert!(!f64::INFINITY.is_sign_negative()); - assert!(!1f64.is_sign_negative()); - assert!(!0f64.is_sign_negative()); - assert!((-0f64).is_sign_negative()); - assert!((-1f64).is_sign_negative()); - assert!(f64::NEG_INFINITY.is_sign_negative()); - assert!((1f64 / f64::NEG_INFINITY).is_sign_negative()); - assert!(!f64::NAN.is_sign_negative()); - assert!((-f64::NAN).is_sign_negative()); -} - -#[test] -fn test_next_up() { - let tiny = f64::from_bits(TINY_BITS); - let tiny_up = f64::from_bits(TINY_UP_BITS); - let max_down = f64::from_bits(MAX_DOWN_BITS); - let largest_subnormal = f64::from_bits(LARGEST_SUBNORMAL_BITS); - let smallest_normal = f64::from_bits(SMALLEST_NORMAL_BITS); - assert_f64_biteq!(f64::NEG_INFINITY.next_up(), f64::MIN); - assert_f64_biteq!(f64::MIN.next_up(), -max_down); - assert_f64_biteq!((-1.0 - f64::EPSILON).next_up(), -1.0); - assert_f64_biteq!((-smallest_normal).next_up(), -largest_subnormal); - assert_f64_biteq!((-tiny_up).next_up(), -tiny); - assert_f64_biteq!((-tiny).next_up(), -0.0f64); - assert_f64_biteq!((-0.0f64).next_up(), tiny); - assert_f64_biteq!(0.0f64.next_up(), tiny); - assert_f64_biteq!(tiny.next_up(), tiny_up); - assert_f64_biteq!(largest_subnormal.next_up(), smallest_normal); - assert_f64_biteq!(1.0f64.next_up(), 1.0 + f64::EPSILON); - assert_f64_biteq!(f64::MAX.next_up(), f64::INFINITY); - assert_f64_biteq!(f64::INFINITY.next_up(), f64::INFINITY); - - let nan0 = f64::NAN; - let nan1 = f64::from_bits(f64::NAN.to_bits() ^ NAN_MASK1); - let nan2 = f64::from_bits(f64::NAN.to_bits() ^ NAN_MASK2); - assert_f64_biteq!(nan0.next_up(), nan0); - assert_f64_biteq!(nan1.next_up(), nan1); - assert_f64_biteq!(nan2.next_up(), nan2); -} - -#[test] -fn test_next_down() { - let tiny = f64::from_bits(TINY_BITS); - let tiny_up = f64::from_bits(TINY_UP_BITS); - let max_down = f64::from_bits(MAX_DOWN_BITS); - let largest_subnormal = f64::from_bits(LARGEST_SUBNORMAL_BITS); - let smallest_normal = f64::from_bits(SMALLEST_NORMAL_BITS); - assert_f64_biteq!(f64::NEG_INFINITY.next_down(), f64::NEG_INFINITY); - assert_f64_biteq!(f64::MIN.next_down(), f64::NEG_INFINITY); - assert_f64_biteq!((-max_down).next_down(), f64::MIN); - assert_f64_biteq!((-1.0f64).next_down(), -1.0 - f64::EPSILON); - assert_f64_biteq!((-largest_subnormal).next_down(), -smallest_normal); - assert_f64_biteq!((-tiny).next_down(), -tiny_up); - assert_f64_biteq!((-0.0f64).next_down(), -tiny); - assert_f64_biteq!((0.0f64).next_down(), -tiny); - assert_f64_biteq!(tiny.next_down(), 0.0f64); - assert_f64_biteq!(tiny_up.next_down(), tiny); - assert_f64_biteq!(smallest_normal.next_down(), largest_subnormal); - assert_f64_biteq!((1.0 + f64::EPSILON).next_down(), 1.0f64); - assert_f64_biteq!(f64::MAX.next_down(), max_down); - assert_f64_biteq!(f64::INFINITY.next_down(), f64::MAX); - - let nan0 = f64::NAN; - let nan1 = f64::from_bits(f64::NAN.to_bits() ^ NAN_MASK1); - let nan2 = f64::from_bits(f64::NAN.to_bits() ^ NAN_MASK2); - assert_f64_biteq!(nan0.next_down(), nan0); - assert_f64_biteq!(nan1.next_down(), nan1); - assert_f64_biteq!(nan2.next_down(), nan2); -} - -#[test] -fn test_mul_add() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert_approx_eq!(12.3f64.mul_add(4.5, 6.7), 62.05); - assert_approx_eq!((-12.3f64).mul_add(-4.5, -6.7), 48.65); - assert_approx_eq!(0.0f64.mul_add(8.9, 1.2), 1.2); - assert_approx_eq!(3.4f64.mul_add(-0.0, 5.6), 5.6); - assert!(nan.mul_add(7.8, 9.0).is_nan()); - assert_eq!(inf.mul_add(7.8, 9.0), inf); - assert_eq!(neg_inf.mul_add(7.8, 9.0), neg_inf); - assert_eq!(8.9f64.mul_add(inf, 3.2), inf); - assert_eq!((-3.2f64).mul_add(2.4, neg_inf), neg_inf); -} - -#[test] -fn test_recip() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert_eq!(1.0f64.recip(), 1.0); - assert_eq!(2.0f64.recip(), 0.5); - assert_eq!((-0.4f64).recip(), -2.5); - assert_eq!(0.0f64.recip(), inf); - assert!(nan.recip().is_nan()); - assert_eq!(inf.recip(), 0.0); - assert_eq!(neg_inf.recip(), 0.0); -} - -#[test] -fn test_powi() { - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert_eq!(1.0f64.powi(1), 1.0); - assert_approx_eq!((-3.1f64).powi(2), 9.61); - assert_approx_eq!(5.9f64.powi(-2), 0.028727); - assert_eq!(8.3f64.powi(0), 1.0); - assert!(nan.powi(2).is_nan()); - assert_eq!(inf.powi(3), inf); - assert_eq!(neg_inf.powi(2), inf); -} - -#[test] fn test_powf() { let nan: f64 = f64::NAN; let inf: f64 = f64::INFINITY; @@ -455,17 +28,6 @@ fn test_powf() { } #[test] -fn test_sqrt_domain() { - assert!(f64::NAN.sqrt().is_nan()); - assert!(f64::NEG_INFINITY.sqrt().is_nan()); - assert!((-1.0f64).sqrt().is_nan()); - assert_eq!((-0.0f64).sqrt(), -0.0); - assert_eq!(0.0f64.sqrt(), 0.0); - assert_eq!(1.0f64.sqrt(), 1.0); - assert_eq!(f64::INFINITY.sqrt(), f64::INFINITY); -} - -#[test] fn test_exp() { assert_eq!(1.0, 0.0f64.exp()); assert_approx_eq!(2.718282, 1.0f64.exp()); @@ -559,35 +121,6 @@ fn test_log10() { } #[test] -fn test_to_degrees() { - let pi: f64 = consts::PI; - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert_eq!(0.0f64.to_degrees(), 0.0); - assert_approx_eq!((-5.8f64).to_degrees(), -332.315521); - assert_eq!(pi.to_degrees(), 180.0); - assert!(nan.to_degrees().is_nan()); - assert_eq!(inf.to_degrees(), inf); - assert_eq!(neg_inf.to_degrees(), neg_inf); -} - -#[test] -fn test_to_radians() { - let pi: f64 = consts::PI; - let nan: f64 = f64::NAN; - let inf: f64 = f64::INFINITY; - let neg_inf: f64 = f64::NEG_INFINITY; - assert_eq!(0.0f64.to_radians(), 0.0); - assert_approx_eq!(154.6f64.to_radians(), 2.698279); - assert_approx_eq!((-332.31f64).to_radians(), -5.799903); - assert_eq!(180.0f64.to_radians(), pi); - assert!(nan.to_radians().is_nan()); - assert_eq!(inf.to_radians(), inf); - assert_eq!(neg_inf.to_radians(), neg_inf); -} - -#[test] fn test_asinh() { assert_eq!(0.0f64.asinh(), 0.0f64); assert_eq!((-0.0f64).asinh(), -0.0f64); @@ -714,204 +247,3 @@ fn test_real_consts() { assert_approx_eq!(ln_2, 2f64.ln()); assert_approx_eq!(ln_10, 10f64.ln()); } - -#[test] -fn test_float_bits_conv() { - assert_eq!((1f64).to_bits(), 0x3ff0000000000000); - assert_eq!((12.5f64).to_bits(), 0x4029000000000000); - assert_eq!((1337f64).to_bits(), 0x4094e40000000000); - assert_eq!((-14.25f64).to_bits(), 0xc02c800000000000); - assert_approx_eq!(f64::from_bits(0x3ff0000000000000), 1.0); - assert_approx_eq!(f64::from_bits(0x4029000000000000), 12.5); - assert_approx_eq!(f64::from_bits(0x4094e40000000000), 1337.0); - assert_approx_eq!(f64::from_bits(0xc02c800000000000), -14.25); - - // Check that NaNs roundtrip their bits regardless of signaling-ness - let masked_nan1 = f64::NAN.to_bits() ^ NAN_MASK1; - let masked_nan2 = f64::NAN.to_bits() ^ NAN_MASK2; - assert!(f64::from_bits(masked_nan1).is_nan()); - assert!(f64::from_bits(masked_nan2).is_nan()); - - assert_eq!(f64::from_bits(masked_nan1).to_bits(), masked_nan1); - assert_eq!(f64::from_bits(masked_nan2).to_bits(), masked_nan2); -} - -#[test] -#[should_panic] -fn test_clamp_min_greater_than_max() { - let _ = 1.0f64.clamp(3.0, 1.0); -} - -#[test] -#[should_panic] -fn test_clamp_min_is_nan() { - let _ = 1.0f64.clamp(f64::NAN, 1.0); -} - -#[test] -#[should_panic] -fn test_clamp_max_is_nan() { - let _ = 1.0f64.clamp(3.0, f64::NAN); -} - -#[test] -fn test_total_cmp() { - use core::cmp::Ordering; - - fn quiet_bit_mask() -> u64 { - 1 << (f64::MANTISSA_DIGITS - 2) - } - - fn min_subnorm() -> f64 { - f64::MIN_POSITIVE / f64::powf(2.0, f64::MANTISSA_DIGITS as f64 - 1.0) - } - - fn max_subnorm() -> f64 { - f64::MIN_POSITIVE - min_subnorm() - } - - fn q_nan() -> f64 { - f64::from_bits(f64::NAN.to_bits() | quiet_bit_mask()) - } - - fn s_nan() -> f64 { - f64::from_bits((f64::NAN.to_bits() & !quiet_bit_mask()) + 42) - } - - assert_eq!(Ordering::Equal, (-q_nan()).total_cmp(&-q_nan())); - assert_eq!(Ordering::Equal, (-s_nan()).total_cmp(&-s_nan())); - assert_eq!(Ordering::Equal, (-f64::INFINITY).total_cmp(&-f64::INFINITY)); - assert_eq!(Ordering::Equal, (-f64::MAX).total_cmp(&-f64::MAX)); - assert_eq!(Ordering::Equal, (-2.5_f64).total_cmp(&-2.5)); - assert_eq!(Ordering::Equal, (-1.0_f64).total_cmp(&-1.0)); - assert_eq!(Ordering::Equal, (-1.5_f64).total_cmp(&-1.5)); - assert_eq!(Ordering::Equal, (-0.5_f64).total_cmp(&-0.5)); - assert_eq!(Ordering::Equal, (-f64::MIN_POSITIVE).total_cmp(&-f64::MIN_POSITIVE)); - assert_eq!(Ordering::Equal, (-max_subnorm()).total_cmp(&-max_subnorm())); - assert_eq!(Ordering::Equal, (-min_subnorm()).total_cmp(&-min_subnorm())); - assert_eq!(Ordering::Equal, (-0.0_f64).total_cmp(&-0.0)); - assert_eq!(Ordering::Equal, 0.0_f64.total_cmp(&0.0)); - assert_eq!(Ordering::Equal, min_subnorm().total_cmp(&min_subnorm())); - assert_eq!(Ordering::Equal, max_subnorm().total_cmp(&max_subnorm())); - assert_eq!(Ordering::Equal, f64::MIN_POSITIVE.total_cmp(&f64::MIN_POSITIVE)); - assert_eq!(Ordering::Equal, 0.5_f64.total_cmp(&0.5)); - assert_eq!(Ordering::Equal, 1.0_f64.total_cmp(&1.0)); - assert_eq!(Ordering::Equal, 1.5_f64.total_cmp(&1.5)); - assert_eq!(Ordering::Equal, 2.5_f64.total_cmp(&2.5)); - assert_eq!(Ordering::Equal, f64::MAX.total_cmp(&f64::MAX)); - assert_eq!(Ordering::Equal, f64::INFINITY.total_cmp(&f64::INFINITY)); - assert_eq!(Ordering::Equal, s_nan().total_cmp(&s_nan())); - assert_eq!(Ordering::Equal, q_nan().total_cmp(&q_nan())); - - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-s_nan())); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-f64::INFINITY)); - assert_eq!(Ordering::Less, (-f64::INFINITY).total_cmp(&-f64::MAX)); - assert_eq!(Ordering::Less, (-f64::MAX).total_cmp(&-2.5)); - assert_eq!(Ordering::Less, (-2.5_f64).total_cmp(&-1.5)); - assert_eq!(Ordering::Less, (-1.5_f64).total_cmp(&-1.0)); - assert_eq!(Ordering::Less, (-1.0_f64).total_cmp(&-0.5)); - assert_eq!(Ordering::Less, (-0.5_f64).total_cmp(&-f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, (-f64::MIN_POSITIVE).total_cmp(&-max_subnorm())); - assert_eq!(Ordering::Less, (-max_subnorm()).total_cmp(&-min_subnorm())); - assert_eq!(Ordering::Less, (-min_subnorm()).total_cmp(&-0.0)); - assert_eq!(Ordering::Less, (-0.0_f64).total_cmp(&0.0)); - assert_eq!(Ordering::Less, 0.0_f64.total_cmp(&min_subnorm())); - assert_eq!(Ordering::Less, min_subnorm().total_cmp(&max_subnorm())); - assert_eq!(Ordering::Less, max_subnorm().total_cmp(&f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, f64::MIN_POSITIVE.total_cmp(&0.5)); - assert_eq!(Ordering::Less, 0.5_f64.total_cmp(&1.0)); - assert_eq!(Ordering::Less, 1.0_f64.total_cmp(&1.5)); - assert_eq!(Ordering::Less, 1.5_f64.total_cmp(&2.5)); - assert_eq!(Ordering::Less, 2.5_f64.total_cmp(&f64::MAX)); - assert_eq!(Ordering::Less, f64::MAX.total_cmp(&f64::INFINITY)); - assert_eq!(Ordering::Less, f64::INFINITY.total_cmp(&s_nan())); - assert_eq!(Ordering::Less, s_nan().total_cmp(&q_nan())); - - assert_eq!(Ordering::Greater, (-s_nan()).total_cmp(&-q_nan())); - assert_eq!(Ordering::Greater, (-f64::INFINITY).total_cmp(&-s_nan())); - assert_eq!(Ordering::Greater, (-f64::MAX).total_cmp(&-f64::INFINITY)); - assert_eq!(Ordering::Greater, (-2.5_f64).total_cmp(&-f64::MAX)); - assert_eq!(Ordering::Greater, (-1.5_f64).total_cmp(&-2.5)); - assert_eq!(Ordering::Greater, (-1.0_f64).total_cmp(&-1.5)); - assert_eq!(Ordering::Greater, (-0.5_f64).total_cmp(&-1.0)); - assert_eq!(Ordering::Greater, (-f64::MIN_POSITIVE).total_cmp(&-0.5)); - assert_eq!(Ordering::Greater, (-max_subnorm()).total_cmp(&-f64::MIN_POSITIVE)); - assert_eq!(Ordering::Greater, (-min_subnorm()).total_cmp(&-max_subnorm())); - assert_eq!(Ordering::Greater, (-0.0_f64).total_cmp(&-min_subnorm())); - assert_eq!(Ordering::Greater, 0.0_f64.total_cmp(&-0.0)); - assert_eq!(Ordering::Greater, min_subnorm().total_cmp(&0.0)); - assert_eq!(Ordering::Greater, max_subnorm().total_cmp(&min_subnorm())); - assert_eq!(Ordering::Greater, f64::MIN_POSITIVE.total_cmp(&max_subnorm())); - assert_eq!(Ordering::Greater, 0.5_f64.total_cmp(&f64::MIN_POSITIVE)); - assert_eq!(Ordering::Greater, 1.0_f64.total_cmp(&0.5)); - assert_eq!(Ordering::Greater, 1.5_f64.total_cmp(&1.0)); - assert_eq!(Ordering::Greater, 2.5_f64.total_cmp(&1.5)); - assert_eq!(Ordering::Greater, f64::MAX.total_cmp(&2.5)); - assert_eq!(Ordering::Greater, f64::INFINITY.total_cmp(&f64::MAX)); - assert_eq!(Ordering::Greater, s_nan().total_cmp(&f64::INFINITY)); - assert_eq!(Ordering::Greater, q_nan().total_cmp(&s_nan())); - - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-s_nan())); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-f64::INFINITY)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-f64::MAX)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-2.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-1.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-1.0)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-0.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-max_subnorm())); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-min_subnorm())); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&-0.0)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&0.0)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&min_subnorm())); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&max_subnorm())); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&0.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&1.0)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&1.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&2.5)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&f64::MAX)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&f64::INFINITY)); - assert_eq!(Ordering::Less, (-q_nan()).total_cmp(&s_nan())); - - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-f64::INFINITY)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-f64::MAX)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-2.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-1.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-1.0)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-0.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-max_subnorm())); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-min_subnorm())); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&-0.0)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&0.0)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&min_subnorm())); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&max_subnorm())); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&f64::MIN_POSITIVE)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&0.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&1.0)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&1.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&2.5)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&f64::MAX)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&f64::INFINITY)); - assert_eq!(Ordering::Less, (-s_nan()).total_cmp(&s_nan())); -} - -#[test] -fn test_algebraic() { - let a: f64 = 123.0; - let b: f64 = 456.0; - - // Check that individual operations match their primitive counterparts. - // - // This is a check of current implementations and does NOT imply any form of - // guarantee about future behavior. The compiler reserves the right to make - // these operations inexact matches in the future. - let eps = if cfg!(miri) { 1e-6 } else { 0.0 }; - - assert_approx_eq!(a.algebraic_add(b), a + b, eps); - assert_approx_eq!(a.algebraic_sub(b), a - b, eps); - assert_approx_eq!(a.algebraic_mul(b), a * b, eps); - assert_approx_eq!(a.algebraic_div(b), a / b, eps); - assert_approx_eq!(a.algebraic_rem(b), a % b, eps); -} |