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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/ryu/src/d2s_small_table.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
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-rw-r--r--vendor/ryu/src/d2s_small_table.rs142
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diff --git a/vendor/ryu/src/d2s_small_table.rs b/vendor/ryu/src/d2s_small_table.rs
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-// 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.
-
-use crate::common::*;
-
-pub static DOUBLE_POW5_INV_SPLIT2: [(u64, u64); 15] = [
- (1, 2305843009213693952),
- (5955668970331000884, 1784059615882449851),
- (8982663654677661702, 1380349269358112757),
- (7286864317269821294, 2135987035920910082),
- (7005857020398200553, 1652639921975621497),
- (17965325103354776697, 1278668206209430417),
- (8928596168509315048, 1978643211784836272),
- (10075671573058298858, 1530901034580419511),
- (597001226353042382, 1184477304306571148),
- (1527430471115325346, 1832889850782397517),
- (12533209867169019542, 1418129833677084982),
- (5577825024675947042, 2194449627517475473),
- (11006974540203867551, 1697873161311732311),
- (10313493231639821582, 1313665730009899186),
- (12701016819766672773, 2032799256770390445),
-];
-
-pub static POW5_INV_OFFSETS: [u32; 19] = [
- 0x54544554, 0x04055545, 0x10041000, 0x00400414, 0x40010000, 0x41155555, 0x00000454, 0x00010044,
- 0x40000000, 0x44000041, 0x50454450, 0x55550054, 0x51655554, 0x40004000, 0x01000001, 0x00010500,
- 0x51515411, 0x05555554, 0x00000000,
-];
-
-pub static DOUBLE_POW5_SPLIT2: [(u64, u64); 13] = [
- (0, 1152921504606846976),
- (0, 1490116119384765625),
- (1032610780636961552, 1925929944387235853),
- (7910200175544436838, 1244603055572228341),
- (16941905809032713930, 1608611746708759036),
- (13024893955298202172, 2079081953128979843),
- (6607496772837067824, 1343575221513417750),
- (17332926989895652603, 1736530273035216783),
- (13037379183483547984, 2244412773384604712),
- (1605989338741628675, 1450417759929778918),
- (9630225068416591280, 1874621017369538693),
- (665883850346957067, 1211445438634777304),
- (14931890668723713708, 1565756531257009982),
-];
-
-pub static POW5_OFFSETS: [u32; 21] = [
- 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x40000000, 0x59695995, 0x55545555, 0x56555515,
- 0x41150504, 0x40555410, 0x44555145, 0x44504540, 0x45555550, 0x40004000, 0x96440440, 0x55565565,
- 0x54454045, 0x40154151, 0x55559155, 0x51405555, 0x00000105,
-];
-
-pub static DOUBLE_POW5_TABLE: [u64; 26] = [
- 1,
- 5,
- 25,
- 125,
- 625,
- 3125,
- 15625,
- 78125,
- 390625,
- 1953125,
- 9765625,
- 48828125,
- 244140625,
- 1220703125,
- 6103515625,
- 30517578125,
- 152587890625,
- 762939453125,
- 3814697265625,
- 19073486328125,
- 95367431640625,
- 476837158203125,
- 2384185791015625,
- 11920928955078125,
- 59604644775390625,
- 298023223876953125,
-];
-
-// Computes 5^i in the form required by Ryū.
-#[cfg_attr(feature = "no-panic", inline)]
-pub unsafe fn compute_pow5(i: u32) -> (u64, u64) {
- let base = i / DOUBLE_POW5_TABLE.len() as u32;
- let base2 = base * DOUBLE_POW5_TABLE.len() as u32;
- let offset = i - base2;
- debug_assert!(base < DOUBLE_POW5_SPLIT2.len() as u32);
- let mul = *DOUBLE_POW5_SPLIT2.get_unchecked(base as usize);
- if offset == 0 {
- return mul;
- }
- debug_assert!(offset < DOUBLE_POW5_TABLE.len() as u32);
- let m = *DOUBLE_POW5_TABLE.get_unchecked(offset as usize);
- let b0 = m as u128 * mul.0 as u128;
- let b2 = m as u128 * mul.1 as u128;
- let delta = pow5bits(i as i32) - pow5bits(base2 as i32);
- debug_assert!(i / 16 < POW5_OFFSETS.len() as u32);
- let shifted_sum = (b0 >> delta)
- + (b2 << (64 - delta))
- + ((*POW5_OFFSETS.get_unchecked((i / 16) as usize) >> ((i % 16) << 1)) & 3) as u128;
- (shifted_sum as u64, (shifted_sum >> 64) as u64)
-}
-
-// Computes 5^-i in the form required by Ryū.
-#[cfg_attr(feature = "no-panic", inline)]
-pub unsafe fn compute_inv_pow5(i: u32) -> (u64, u64) {
- let base = (i + DOUBLE_POW5_TABLE.len() as u32 - 1) / DOUBLE_POW5_TABLE.len() as u32;
- let base2 = base * DOUBLE_POW5_TABLE.len() as u32;
- let offset = base2 - i;
- debug_assert!(base < DOUBLE_POW5_INV_SPLIT2.len() as u32);
- let mul = *DOUBLE_POW5_INV_SPLIT2.get_unchecked(base as usize); // 1/5^base2
- if offset == 0 {
- return mul;
- }
- debug_assert!(offset < DOUBLE_POW5_TABLE.len() as u32);
- let m = *DOUBLE_POW5_TABLE.get_unchecked(offset as usize); // 5^offset
- let b0 = m as u128 * (mul.0 - 1) as u128;
- let b2 = m as u128 * mul.1 as u128; // 1/5^base2 * 5^offset = 1/5^(base2-offset) = 1/5^i
- let delta = pow5bits(base2 as i32) - pow5bits(i as i32);
- debug_assert!(base < POW5_INV_OFFSETS.len() as u32);
- let shifted_sum = ((b0 >> delta) + (b2 << (64 - delta)))
- + 1
- + ((*POW5_INV_OFFSETS.get_unchecked((i / 16) as usize) >> ((i % 16) << 1)) & 3) as u128;
- (shifted_sum as u64, (shifted_sum >> 64) as u64)
-}