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Diffstat (limited to 'vendor/ryu/tests/f2s_test.rs')
-rw-r--r-- | vendor/ryu/tests/f2s_test.rs | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/vendor/ryu/tests/f2s_test.rs b/vendor/ryu/tests/f2s_test.rs deleted file mode 100644 index d6249a3..0000000 --- a/vendor/ryu/tests/f2s_test.rs +++ /dev/null @@ -1,181 +0,0 @@ -// Translated from C to Rust. The original C code can be found at -// https://github.com/ulfjack/ryu and carries the following license: -// -// Copyright 2018 Ulf Adams -// -// The contents of this file may be used under the terms of the Apache License, -// Version 2.0. -// -// (See accompanying file LICENSE-Apache or copy at -// http://www.apache.org/licenses/LICENSE-2.0) -// -// Alternatively, the contents of this file may be used under the terms of -// the Boost Software License, Version 1.0. -// (See accompanying file LICENSE-Boost or copy at -// https://www.boost.org/LICENSE_1_0.txt) -// -// Unless required by applicable law or agreed to in writing, this software -// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, either express or implied. - -#![allow( - clippy::approx_constant, - clippy::float_cmp, - clippy::non_ascii_literal, - clippy::unreadable_literal, - clippy::unseparated_literal_suffix -)] - -#[macro_use] -mod macros; - -use std::f32; - -fn pretty(f: f32) -> String { - ryu::Buffer::new().format(f).to_owned() -} - -#[test] -fn test_ryu() { - check!(0.3); - check!(1234000000000.0); - check!(1.234e13); - check!(2.71828); - check!(1.1e32); - check!(1.1e-32); - check!(2.7182817); - check!(1e-45); - check!(3.4028235e38); - check!(-0.001234); -} - -#[test] -fn test_random() { - let n = if cfg!(miri) { 100 } else { 1000000 }; - let mut buffer = ryu::Buffer::new(); - for _ in 0..n { - let f: f32 = rand::random(); - assert_eq!(f, buffer.format_finite(f).parse().unwrap()); - } -} - -#[test] -#[cfg_attr(miri, ignore)] -fn test_non_finite() { - for i in 0u32..1 << 23 { - let f = f32::from_bits((((1 << 8) - 1) << 23) + i); - assert!(!f.is_finite(), "f={}", f); - ryu::Buffer::new().format_finite(f); - } -} - -#[test] -fn test_basic() { - check!(0.0); - check!(-0.0); - check!(1.0); - check!(-1.0); - assert_eq!(pretty(f32::NAN.copysign(1.0)), "NaN"); - assert_eq!(pretty(f32::NAN.copysign(-1.0)), "NaN"); - assert_eq!(pretty(f32::INFINITY), "inf"); - assert_eq!(pretty(f32::NEG_INFINITY), "-inf"); -} - -#[test] -fn test_switch_to_subnormal() { - check!(1.1754944e-38); -} - -#[test] -fn test_min_and_max() { - assert_eq!(f32::from_bits(0x7f7fffff), 3.4028235e38); - check!(3.4028235e38); - assert_eq!(f32::from_bits(1), 1e-45); - check!(1e-45); -} - -// Check that we return the exact boundary if it is the shortest -// representation, but only if the original floating point number is even. -#[test] -fn test_boundary_round_even() { - check!(33554450.0); - check!(9000000000.0); - check!(34366720000.0); -} - -// If the exact value is exactly halfway between two shortest representations, -// then we round to even. It seems like this only makes a difference if the -// last two digits are ...2|5 or ...7|5, and we cut off the 5. -#[test] -fn test_exact_value_round_even() { - check!(305404.12); - check!(8099.0312); -} - -#[test] -fn test_lots_of_trailing_zeros() { - // Pattern for the first test: 00111001100000000000000000000000 - check!(0.00024414062); - check!(0.0024414062); - check!(0.0043945312); - check!(0.0063476562); -} - -#[test] -fn test_regression() { - check!(4.7223665e21); - check!(8388608.0); - check!(16777216.0); - check!(33554436.0); - check!(67131496.0); - check!(1.9310392e-38); - check!(-2.47e-43); - check!(1.993244e-38); - check!(4103.9004); - check!(5339999700.0); - check!(6.0898e-39); - check!(0.0010310042); - check!(2.882326e17); - check!(7.038531e-26); - check!(9.223404e17); - check!(67108870.0); - check!(1e-44); - check!(2.816025e14); - check!(9.223372e18); - check!(1.5846086e29); - check!(1.1811161e19); - check!(5.368709e18); - check!(4.6143166e18); - check!(0.007812537); - check!(1e-45); - check!(1.18697725e20); - check!(1.00014165e-36); - check!(200.0); - check!(33554432.0); -} - -#[test] -fn test_looks_like_pow5() { - // These numbers have a mantissa that is the largest power of 5 that fits, - // and an exponent that causes the computation for q to result in 10, which - // is a corner case for Ryū. - assert_eq!(f32::from_bits(0x5D1502F9), 6.7108864e17); - check!(6.7108864e17); - assert_eq!(f32::from_bits(0x5D9502F9), 1.3421773e18); - check!(1.3421773e18); - assert_eq!(f32::from_bits(0x5E1502F9), 2.6843546e18); - check!(2.6843546e18); -} - -#[test] -fn test_output_length() { - check!(1.0); // already tested in Basic - check!(1.2); - check!(1.23); - check!(1.234); - check!(1.2345); - check!(1.23456); - check!(1.234567); - check!(1.2345678); - check!(1.23456735e-36); -} |