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author | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
commit | a990de90fe41456a23e58bd087d2f107d321f3a1 (patch) | |
tree | 15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/serde_json/tests/lexical/float.rs | |
parent | 3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff) | |
download | fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip |
Deleted vendor folder
Diffstat (limited to 'vendor/serde_json/tests/lexical/float.rs')
-rw-r--r-- | vendor/serde_json/tests/lexical/float.rs | 581 |
1 files changed, 0 insertions, 581 deletions
diff --git a/vendor/serde_json/tests/lexical/float.rs b/vendor/serde_json/tests/lexical/float.rs deleted file mode 100644 index c87e7e1..0000000 --- a/vendor/serde_json/tests/lexical/float.rs +++ /dev/null @@ -1,581 +0,0 @@ -// Adapted from https://github.com/Alexhuszagh/rust-lexical. - -use crate::lexical::float::ExtendedFloat; -use crate::lexical::rounding::round_nearest_tie_even; -use std::{f32, f64}; - -// NORMALIZE - -fn check_normalize(mant: u64, exp: i32, shift: u32, r_mant: u64, r_exp: i32) { - let mut x = ExtendedFloat { mant, exp }; - assert_eq!(x.normalize(), shift); - assert_eq!( - x, - ExtendedFloat { - mant: r_mant, - exp: r_exp - } - ); -} - -#[test] -fn normalize_test() { - // F32 - // 0 - check_normalize(0, 0, 0, 0, 0); - - // min value - check_normalize(1, -149, 63, 9223372036854775808, -212); - - // 1.0e-40 - check_normalize(71362, -149, 47, 10043308644012916736, -196); - - // 1.0e-20 - check_normalize(12379400, -90, 40, 13611294244890214400, -130); - - // 1.0 - check_normalize(8388608, -23, 40, 9223372036854775808, -63); - - // 1e20 - check_normalize(11368684, 43, 40, 12500000250510966784, 3); - - // max value - check_normalize(16777213, 104, 40, 18446740775174668288, 64); - - // F64 - - // min value - check_normalize(1, -1074, 63, 9223372036854775808, -1137); - - // 1.0e-250 - check_normalize(6448907850777164, -883, 11, 13207363278391631872, -894); - - // 1.0e-150 - check_normalize(7371020360979573, -551, 11, 15095849699286165504, -562); - - // 1.0e-45 - check_normalize(6427752177035961, -202, 11, 13164036458569648128, -213); - - // 1.0e-40 - check_normalize(4903985730770844, -185, 11, 10043362776618688512, -196); - - // 1.0e-20 - check_normalize(6646139978924579, -119, 11, 13611294676837537792, -130); - - // 1.0 - check_normalize(4503599627370496, -52, 11, 9223372036854775808, -63); - - // 1e20 - check_normalize(6103515625000000, 14, 11, 12500000000000000000, 3); - - // 1e40 - check_normalize(8271806125530277, 80, 11, 16940658945086007296, 69); - - // 1e150 - check_normalize(5503284107318959, 446, 11, 11270725851789228032, 435); - - // 1e250 - check_normalize(6290184345309700, 778, 11, 12882297539194265600, 767); - - // max value - check_normalize(9007199254740991, 971, 11, 18446744073709549568, 960); -} - -// ROUND - -fn check_round_to_f32(mant: u64, exp: i32, r_mant: u64, r_exp: i32) { - let mut x = ExtendedFloat { mant, exp }; - x.round_to_native::<f32, _>(round_nearest_tie_even); - assert_eq!( - x, - ExtendedFloat { - mant: r_mant, - exp: r_exp - } - ); -} - -#[test] -fn round_to_f32_test() { - // This is lossy, so some of these values are **slightly** rounded. - - // underflow - check_round_to_f32(9223372036854775808, -213, 0, -149); - - // min value - check_round_to_f32(9223372036854775808, -212, 1, -149); - - // 1.0e-40 - check_round_to_f32(10043308644012916736, -196, 71362, -149); - - // 1.0e-20 - check_round_to_f32(13611294244890214400, -130, 12379400, -90); - - // 1.0 - check_round_to_f32(9223372036854775808, -63, 8388608, -23); - - // 1e20 - check_round_to_f32(12500000250510966784, 3, 11368684, 43); - - // max value - check_round_to_f32(18446740775174668288, 64, 16777213, 104); - - // overflow - check_round_to_f32(18446740775174668288, 65, 16777213, 105); -} - -fn check_round_to_f64(mant: u64, exp: i32, r_mant: u64, r_exp: i32) { - let mut x = ExtendedFloat { mant, exp }; - x.round_to_native::<f64, _>(round_nearest_tie_even); - assert_eq!( - x, - ExtendedFloat { - mant: r_mant, - exp: r_exp - } - ); -} - -#[test] -fn round_to_f64_test() { - // This is lossy, so some of these values are **slightly** rounded. - - // underflow - check_round_to_f64(9223372036854775808, -1138, 0, -1074); - - // min value - check_round_to_f64(9223372036854775808, -1137, 1, -1074); - - // 1.0e-250 - check_round_to_f64(15095849699286165504, -562, 7371020360979573, -551); - - // 1.0e-150 - check_round_to_f64(15095849699286165504, -562, 7371020360979573, -551); - - // 1.0e-45 - check_round_to_f64(13164036458569648128, -213, 6427752177035961, -202); - - // 1.0e-40 - check_round_to_f64(10043362776618688512, -196, 4903985730770844, -185); - - // 1.0e-20 - check_round_to_f64(13611294676837537792, -130, 6646139978924579, -119); - - // 1.0 - check_round_to_f64(9223372036854775808, -63, 4503599627370496, -52); - - // 1e20 - check_round_to_f64(12500000000000000000, 3, 6103515625000000, 14); - - // 1e40 - check_round_to_f64(16940658945086007296, 69, 8271806125530277, 80); - - // 1e150 - check_round_to_f64(11270725851789228032, 435, 5503284107318959, 446); - - // 1e250 - check_round_to_f64(12882297539194265600, 767, 6290184345309700, 778); - - // max value - check_round_to_f64(18446744073709549568, 960, 9007199254740991, 971); - - // Bug fixes - // 1.2345e-308 - check_round_to_f64(10234494226754558294, -1086, 2498655817078750, -1074); -} - -fn assert_normalized_eq(mut x: ExtendedFloat, mut y: ExtendedFloat) { - x.normalize(); - y.normalize(); - assert_eq!(x, y); -} - -#[test] -fn from_float() { - let values: [f32; 26] = [ - 1e-40, 2e-40, 1e-35, 2e-35, 1e-30, 2e-30, 1e-25, 2e-25, 1e-20, 2e-20, 1e-15, 2e-15, 1e-10, - 2e-10, 1e-5, 2e-5, 1.0, 2.0, 1e5, 2e5, 1e10, 2e10, 1e15, 2e15, 1e20, 2e20, - ]; - for value in &values { - assert_normalized_eq( - ExtendedFloat::from_float(*value), - ExtendedFloat::from_float(*value as f64), - ); - } -} - -// TO - -// Sample of interesting numbers to check during standard test builds. -const INTEGERS: [u64; 32] = [ - 0, // 0x0 - 1, // 0x1 - 7, // 0x7 - 15, // 0xF - 112, // 0x70 - 119, // 0x77 - 127, // 0x7F - 240, // 0xF0 - 247, // 0xF7 - 255, // 0xFF - 2032, // 0x7F0 - 2039, // 0x7F7 - 2047, // 0x7FF - 4080, // 0xFF0 - 4087, // 0xFF7 - 4095, // 0xFFF - 65520, // 0xFFF0 - 65527, // 0xFFF7 - 65535, // 0xFFFF - 1048560, // 0xFFFF0 - 1048567, // 0xFFFF7 - 1048575, // 0xFFFFF - 16777200, // 0xFFFFF0 - 16777207, // 0xFFFFF7 - 16777215, // 0xFFFFFF - 268435440, // 0xFFFFFF0 - 268435447, // 0xFFFFFF7 - 268435455, // 0xFFFFFFF - 4294967280, // 0xFFFFFFF0 - 4294967287, // 0xFFFFFFF7 - 4294967295, // 0xFFFFFFFF - 18446744073709551615, // 0xFFFFFFFFFFFFFFFF -]; - -#[test] -fn to_f32_test() { - // underflow - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -213, - }; - assert_eq!(x.into_float::<f32>(), 0.0); - - // min value - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -212, - }; - assert_eq!(x.into_float::<f32>(), 1e-45); - - // 1.0e-40 - let x = ExtendedFloat { - mant: 10043308644012916736, - exp: -196, - }; - assert_eq!(x.into_float::<f32>(), 1e-40); - - // 1.0e-20 - let x = ExtendedFloat { - mant: 13611294244890214400, - exp: -130, - }; - assert_eq!(x.into_float::<f32>(), 1e-20); - - // 1.0 - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -63, - }; - assert_eq!(x.into_float::<f32>(), 1.0); - - // 1e20 - let x = ExtendedFloat { - mant: 12500000250510966784, - exp: 3, - }; - assert_eq!(x.into_float::<f32>(), 1e20); - - // max value - let x = ExtendedFloat { - mant: 18446740775174668288, - exp: 64, - }; - assert_eq!(x.into_float::<f32>(), 3.402823e38); - - // almost max, high exp - let x = ExtendedFloat { - mant: 1048575, - exp: 108, - }; - assert_eq!(x.into_float::<f32>(), 3.4028204e38); - - // max value + 1 - let x = ExtendedFloat { - mant: 16777216, - exp: 104, - }; - assert_eq!(x.into_float::<f32>(), f32::INFINITY); - - // max value + 1 - let x = ExtendedFloat { - mant: 1048576, - exp: 108, - }; - assert_eq!(x.into_float::<f32>(), f32::INFINITY); - - // 1e40 - let x = ExtendedFloat { - mant: 16940658945086007296, - exp: 69, - }; - assert_eq!(x.into_float::<f32>(), f32::INFINITY); - - // Integers. - for int in &INTEGERS { - let fp = ExtendedFloat { mant: *int, exp: 0 }; - assert_eq!(fp.into_float::<f32>(), *int as f32, "{:?} as f32", *int); - } -} - -#[test] -fn to_f64_test() { - // underflow - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -1138, - }; - assert_eq!(x.into_float::<f64>(), 0.0); - - // min value - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -1137, - }; - assert_eq!(x.into_float::<f64>(), 5e-324); - - // 1.0e-250 - let x = ExtendedFloat { - mant: 13207363278391631872, - exp: -894, - }; - assert_eq!(x.into_float::<f64>(), 1e-250); - - // 1.0e-150 - let x = ExtendedFloat { - mant: 15095849699286165504, - exp: -562, - }; - assert_eq!(x.into_float::<f64>(), 1e-150); - - // 1.0e-45 - let x = ExtendedFloat { - mant: 13164036458569648128, - exp: -213, - }; - assert_eq!(x.into_float::<f64>(), 1e-45); - - // 1.0e-40 - let x = ExtendedFloat { - mant: 10043362776618688512, - exp: -196, - }; - assert_eq!(x.into_float::<f64>(), 1e-40); - - // 1.0e-20 - let x = ExtendedFloat { - mant: 13611294676837537792, - exp: -130, - }; - assert_eq!(x.into_float::<f64>(), 1e-20); - - // 1.0 - let x = ExtendedFloat { - mant: 9223372036854775808, - exp: -63, - }; - assert_eq!(x.into_float::<f64>(), 1.0); - - // 1e20 - let x = ExtendedFloat { - mant: 12500000000000000000, - exp: 3, - }; - assert_eq!(x.into_float::<f64>(), 1e20); - - // 1e40 - let x = ExtendedFloat { - mant: 16940658945086007296, - exp: 69, - }; - assert_eq!(x.into_float::<f64>(), 1e40); - - // 1e150 - let x = ExtendedFloat { - mant: 11270725851789228032, - exp: 435, - }; - assert_eq!(x.into_float::<f64>(), 1e150); - - // 1e250 - let x = ExtendedFloat { - mant: 12882297539194265600, - exp: 767, - }; - assert_eq!(x.into_float::<f64>(), 1e250); - - // max value - let x = ExtendedFloat { - mant: 9007199254740991, - exp: 971, - }; - assert_eq!(x.into_float::<f64>(), 1.7976931348623157e308); - - // max value - let x = ExtendedFloat { - mant: 18446744073709549568, - exp: 960, - }; - assert_eq!(x.into_float::<f64>(), 1.7976931348623157e308); - - // overflow - let x = ExtendedFloat { - mant: 9007199254740992, - exp: 971, - }; - assert_eq!(x.into_float::<f64>(), f64::INFINITY); - - // overflow - let x = ExtendedFloat { - mant: 18446744073709549568, - exp: 961, - }; - assert_eq!(x.into_float::<f64>(), f64::INFINITY); - - // Underflow - // Adapted from failures in strtod. - let x = ExtendedFloat { - exp: -1139, - mant: 18446744073709550712, - }; - assert_eq!(x.into_float::<f64>(), 0.0); - - let x = ExtendedFloat { - exp: -1139, - mant: 18446744073709551460, - }; - assert_eq!(x.into_float::<f64>(), 0.0); - - let x = ExtendedFloat { - exp: -1138, - mant: 9223372036854776103, - }; - assert_eq!(x.into_float::<f64>(), 5e-324); - - // Integers. - for int in &INTEGERS { - let fp = ExtendedFloat { mant: *int, exp: 0 }; - assert_eq!(fp.into_float::<f64>(), *int as f64, "{:?} as f64", *int); - } -} - -// OPERATIONS - -fn check_mul(a: ExtendedFloat, b: ExtendedFloat, c: ExtendedFloat) { - let r = a.mul(&b); - assert_eq!(r, c); -} - -#[test] -fn mul_test() { - // Normalized (64-bit mantissa) - let a = ExtendedFloat { - mant: 13164036458569648128, - exp: -213, - }; - let b = ExtendedFloat { - mant: 9223372036854775808, - exp: -62, - }; - let c = ExtendedFloat { - mant: 6582018229284824064, - exp: -211, - }; - check_mul(a, b, c); - - // Check with integers - // 64-bit mantissa - let mut a = ExtendedFloat { mant: 10, exp: 0 }; - let mut b = ExtendedFloat { mant: 10, exp: 0 }; - a.normalize(); - b.normalize(); - assert_eq!(a.mul(&b).into_float::<f64>(), 100.0); - - // Check both values need high bits set. - let a = ExtendedFloat { - mant: 1 << 32, - exp: -31, - }; - let b = ExtendedFloat { - mant: 1 << 32, - exp: -31, - }; - assert_eq!(a.mul(&b).into_float::<f64>(), 4.0); - - // Check both values need high bits set. - let a = ExtendedFloat { - mant: 10 << 31, - exp: -31, - }; - let b = ExtendedFloat { - mant: 10 << 31, - exp: -31, - }; - assert_eq!(a.mul(&b).into_float::<f64>(), 100.0); -} - -fn check_imul(mut a: ExtendedFloat, b: ExtendedFloat, c: ExtendedFloat) { - a.imul(&b); - assert_eq!(a, c); -} - -#[test] -fn imul_test() { - // Normalized (64-bit mantissa) - let a = ExtendedFloat { - mant: 13164036458569648128, - exp: -213, - }; - let b = ExtendedFloat { - mant: 9223372036854775808, - exp: -62, - }; - let c = ExtendedFloat { - mant: 6582018229284824064, - exp: -211, - }; - check_imul(a, b, c); - - // Check with integers - // 64-bit mantissa - let mut a = ExtendedFloat { mant: 10, exp: 0 }; - let mut b = ExtendedFloat { mant: 10, exp: 0 }; - a.normalize(); - b.normalize(); - a.imul(&b); - assert_eq!(a.into_float::<f64>(), 100.0); - - // Check both values need high bits set. - let mut a = ExtendedFloat { - mant: 1 << 32, - exp: -31, - }; - let b = ExtendedFloat { - mant: 1 << 32, - exp: -31, - }; - a.imul(&b); - assert_eq!(a.into_float::<f64>(), 4.0); - - // Check both values need high bits set. - let mut a = ExtendedFloat { - mant: 10 << 31, - exp: -31, - }; - let b = ExtendedFloat { - mant: 10 << 31, - exp: -31, - }; - a.imul(&b); - assert_eq!(a.into_float::<f64>(), 100.0); -} |