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Diffstat (limited to 'vendor/ryu/tests/d2s_test.rs')
-rw-r--r-- | vendor/ryu/tests/d2s_test.rs | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/vendor/ryu/tests/d2s_test.rs b/vendor/ryu/tests/d2s_test.rs deleted file mode 100644 index 7e8eba6..0000000 --- a/vendor/ryu/tests/d2s_test.rs +++ /dev/null @@ -1,331 +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::cast_lossless, - clippy::float_cmp, - clippy::int_plus_one, - clippy::non_ascii_literal, - clippy::unreadable_literal, - clippy::unseparated_literal_suffix -)] - -#[macro_use] -mod macros; - -use std::f64; - -fn pretty(f: f64) -> String { - ryu::Buffer::new().format(f).to_owned() -} - -fn ieee_parts_to_double(sign: bool, ieee_exponent: u32, ieee_mantissa: u64) -> f64 { - assert!(ieee_exponent <= 2047); - assert!(ieee_mantissa <= (1u64 << 53) - 1); - f64::from_bits(((sign as u64) << 63) | ((ieee_exponent as u64) << 52) | ieee_mantissa) -} - -#[test] -fn test_ryu() { - check!(0.3); - check!(1234000000000000.0); - check!(1.234e16); - check!(2.71828); - check!(1.1e128); - check!(1.1e-64); - check!(2.718281828459045); - check!(5e-324); - check!(1.7976931348623157e308); -} - -#[test] -fn test_random() { - let n = if cfg!(miri) { 100 } else { 1000000 }; - let mut buffer = ryu::Buffer::new(); - for _ in 0..n { - let f: f64 = rand::random(); - assert_eq!(f, buffer.format_finite(f).parse().unwrap()); - } -} - -#[test] -#[cfg_attr(miri, ignore)] -fn test_non_finite() { - for i in 0u64..1 << 23 { - let f = f64::from_bits((((1 << 11) - 1) << 52) + (i << 29)); - 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(f64::NAN.copysign(1.0)), "NaN"); - assert_eq!(pretty(f64::NAN.copysign(-1.0)), "NaN"); - assert_eq!(pretty(f64::INFINITY), "inf"); - assert_eq!(pretty(f64::NEG_INFINITY), "-inf"); -} - -#[test] -fn test_switch_to_subnormal() { - check!(2.2250738585072014e-308); -} - -#[test] -fn test_min_and_max() { - assert_eq!(f64::from_bits(0x7fefffffffffffff), 1.7976931348623157e308); - check!(1.7976931348623157e308); - assert_eq!(f64::from_bits(1), 5e-324); - check!(5e-324); -} - -#[test] -fn test_lots_of_trailing_zeros() { - check!(2.9802322387695312e-8); -} - -#[test] -fn test_regression() { - check!(-2.109808898695963e16); - check!(4.940656e-318); - check!(1.18575755e-316); - check!(2.989102097996e-312); - check!(9060801153433600.0); - check!(4.708356024711512e18); - check!(9.409340012568248e18); - check!(1.2345678); -} - -#[test] -fn test_looks_like_pow5() { - // These numbers have a mantissa that is a multiple of the largest power of - // 5 that fits, and an exponent that causes the computation for q to result - // in 22, which is a corner case for Ryū. - assert_eq!(f64::from_bits(0x4830F0CF064DD592), 5.764607523034235e39); - check!(5.764607523034235e39); - assert_eq!(f64::from_bits(0x4840F0CF064DD592), 1.152921504606847e40); - check!(1.152921504606847e40); - assert_eq!(f64::from_bits(0x4850F0CF064DD592), 2.305843009213694e40); - check!(2.305843009213694e40); -} - -#[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); // already tested in Regression - check!(1.23456789); - check!(1.234567895); // 1.234567890 would be trimmed - check!(1.2345678901); - check!(1.23456789012); - check!(1.234567890123); - check!(1.2345678901234); - check!(1.23456789012345); - check!(1.234567890123456); - check!(1.2345678901234567); - - // Test 32-bit chunking - check!(4.294967294); // 2^32 - 2 - check!(4.294967295); // 2^32 - 1 - check!(4.294967296); // 2^32 - check!(4.294967297); // 2^32 + 1 - check!(4.294967298); // 2^32 + 2 -} - -// Test min, max shift values in shiftright128 -#[test] -fn test_min_max_shift() { - let max_mantissa = (1u64 << 53) - 1; - - // 32-bit opt-size=0: 49 <= dist <= 50 - // 32-bit opt-size=1: 30 <= dist <= 50 - // 64-bit opt-size=0: 50 <= dist <= 50 - // 64-bit opt-size=1: 30 <= dist <= 50 - assert_eq!(1.7800590868057611E-307, ieee_parts_to_double(false, 4, 0)); - check!(1.7800590868057611e-307); - // 32-bit opt-size=0: 49 <= dist <= 49 - // 32-bit opt-size=1: 28 <= dist <= 49 - // 64-bit opt-size=0: 50 <= dist <= 50 - // 64-bit opt-size=1: 28 <= dist <= 50 - assert_eq!( - 2.8480945388892175E-306, - ieee_parts_to_double(false, 6, max_mantissa) - ); - check!(2.8480945388892175e-306); - // 32-bit opt-size=0: 52 <= dist <= 53 - // 32-bit opt-size=1: 2 <= dist <= 53 - // 64-bit opt-size=0: 53 <= dist <= 53 - // 64-bit opt-size=1: 2 <= dist <= 53 - assert_eq!(2.446494580089078E-296, ieee_parts_to_double(false, 41, 0)); - check!(2.446494580089078e-296); - // 32-bit opt-size=0: 52 <= dist <= 52 - // 32-bit opt-size=1: 2 <= dist <= 52 - // 64-bit opt-size=0: 53 <= dist <= 53 - // 64-bit opt-size=1: 2 <= dist <= 53 - assert_eq!( - 4.8929891601781557E-296, - ieee_parts_to_double(false, 40, max_mantissa) - ); - check!(4.8929891601781557e-296); - - // 32-bit opt-size=0: 57 <= dist <= 58 - // 32-bit opt-size=1: 57 <= dist <= 58 - // 64-bit opt-size=0: 58 <= dist <= 58 - // 64-bit opt-size=1: 58 <= dist <= 58 - assert_eq!(1.8014398509481984E16, ieee_parts_to_double(false, 1077, 0)); - check!(1.8014398509481984e16); - // 32-bit opt-size=0: 57 <= dist <= 57 - // 32-bit opt-size=1: 57 <= dist <= 57 - // 64-bit opt-size=0: 58 <= dist <= 58 - // 64-bit opt-size=1: 58 <= dist <= 58 - assert_eq!( - 3.6028797018963964E16, - ieee_parts_to_double(false, 1076, max_mantissa) - ); - check!(3.6028797018963964e16); - // 32-bit opt-size=0: 51 <= dist <= 52 - // 32-bit opt-size=1: 51 <= dist <= 59 - // 64-bit opt-size=0: 52 <= dist <= 52 - // 64-bit opt-size=1: 52 <= dist <= 59 - assert_eq!(2.900835519859558E-216, ieee_parts_to_double(false, 307, 0)); - check!(2.900835519859558e-216); - // 32-bit opt-size=0: 51 <= dist <= 51 - // 32-bit opt-size=1: 51 <= dist <= 59 - // 64-bit opt-size=0: 52 <= dist <= 52 - // 64-bit opt-size=1: 52 <= dist <= 59 - assert_eq!( - 5.801671039719115E-216, - ieee_parts_to_double(false, 306, max_mantissa) - ); - check!(5.801671039719115e-216); - - // https://github.com/ulfjack/ryu/commit/19e44d16d80236f5de25800f56d82606d1be00b9#commitcomment-30146483 - // 32-bit opt-size=0: 49 <= dist <= 49 - // 32-bit opt-size=1: 44 <= dist <= 49 - // 64-bit opt-size=0: 50 <= dist <= 50 - // 64-bit opt-size=1: 44 <= dist <= 50 - assert_eq!( - 3.196104012172126E-27, - ieee_parts_to_double(false, 934, 0x000FA7161A4D6E0C) - ); - check!(3.196104012172126e-27); -} - -#[test] -fn test_small_integers() { - check!(9007199254740991.0); // 2^53-1 - check!(9007199254740992.0); // 2^53 - - check!(1.0); - check!(12.0); - check!(123.0); - check!(1234.0); - check!(12345.0); - check!(123456.0); - check!(1234567.0); - check!(12345678.0); - check!(123456789.0); - check!(1234567890.0); - check!(1234567895.0); - check!(12345678901.0); - check!(123456789012.0); - check!(1234567890123.0); - check!(12345678901234.0); - check!(123456789012345.0); - check!(1234567890123456.0); - - // 10^i - check!(1.0); - check!(10.0); - check!(100.0); - check!(1000.0); - check!(10000.0); - check!(100000.0); - check!(1000000.0); - check!(10000000.0); - check!(100000000.0); - check!(1000000000.0); - check!(10000000000.0); - check!(100000000000.0); - check!(1000000000000.0); - check!(10000000000000.0); - check!(100000000000000.0); - check!(1000000000000000.0); - - // 10^15 + 10^i - check!(1000000000000001.0); - check!(1000000000000010.0); - check!(1000000000000100.0); - check!(1000000000001000.0); - check!(1000000000010000.0); - check!(1000000000100000.0); - check!(1000000001000000.0); - check!(1000000010000000.0); - check!(1000000100000000.0); - check!(1000001000000000.0); - check!(1000010000000000.0); - check!(1000100000000000.0); - check!(1001000000000000.0); - check!(1010000000000000.0); - check!(1100000000000000.0); - - // Largest power of 2 <= 10^(i+1) - check!(8.0); - check!(64.0); - check!(512.0); - check!(8192.0); - check!(65536.0); - check!(524288.0); - check!(8388608.0); - check!(67108864.0); - check!(536870912.0); - check!(8589934592.0); - check!(68719476736.0); - check!(549755813888.0); - check!(8796093022208.0); - check!(70368744177664.0); - check!(562949953421312.0); - check!(9007199254740992.0); - - // 1000 * (Largest power of 2 <= 10^(i+1)) - check!(8000.0); - check!(64000.0); - check!(512000.0); - check!(8192000.0); - check!(65536000.0); - check!(524288000.0); - check!(8388608000.0); - check!(67108864000.0); - check!(536870912000.0); - check!(8589934592000.0); - check!(68719476736000.0); - check!(549755813888000.0); - check!(8796093022208000.0); -} |