TurboRC: Turbo Range Coder + rANS Asymmetric Numeral Systems
======================================
Fastest (Branchless) Range Coder / Arithmetic Coder
100% C (C++ headers).
OS/Arch: Linux amd/intel, arm, RISC-V, PowerPC, s390x, Apple M1-M5 MacOs. Windows: MSYS2, Mingw, visual c++
No other Range Coder / Arithmetic Coder encode or decode faster with better compression
Up to 3 times faster than the next fastest range coder with similar compression ratio
Can work as bitwise or/and as multisymbol range coder
32 or 64 bits range coder. Big + Little endian
Renormalization output 8,16 or 32 bits
Easy connection to bit, nibble or byte predictors.
Several built-in predictors: simple, dual speed, fsm
Built-in order0, order1, order2, Sliding Context, Context mixing,
Fast full 8/16 bits BWT: Burrows-Wheeler compression/decompression w/
preprocessing : lzp and utf-8
postprocessing: QLFC (Quantized Local Frequency Coding),
BWT :libsais + optimized libdivsufsort + optimized inverse bwt included + Multithreading
static + adaptive CDF - cumulative distribution functions
stdin/stdout file compressor included
TurboRC App for benchmarking all the functions and test allmost all byte, integer, floating point, date and timestamp file types.
read and convert text, csv or binary files to 8/16/32 bits before processing
set predictor and parameters at the command line
Preprocessing:
Linear Quantization for 16/32/64 floating point to 8/16/32/64 integer
Asymmetric Numeral Systems
Fastest Adaptive CDF rANS Asymmetric Numeral Systems / SSE, AVX2 / Arm NEON / RISC-V RVV
bitwise ANS
No other adaptive ANS encode or decode faster with better compression
GPL 3.0
A commercial license is available. Contact us at powturbo [AT] gmail.com for more information.
./turborc -e0 file " benchmark all basic functions using the default simple predictor
./turborc -e20 file " byte gamma coding + rc
./turborc -e1,2 file
./turborc -e0 -pss -r47 file " use dual speed predictor with parameters 4 and 7
./turborc -e0 -psf -r1 file " use FSM predictor with filename "FSM1.txt"
./turborc -e0 file -Os " raw 16 bits input
./turborc -e0 file -Ou " raw 32 bits input
./turborc -e0 file -Ft " text file (one integer/line)
./turborc -e0 file -Fc " text file with multiple integer entries (separated by non-digits characters ex. 456,32,54)
./turborc -e0 file -Fc -v5 " like prev., display the first 100 values read
./turborc -e0 file -Fcf " text file with multiple floating-point entries (separated by non-digits characters ex. 456.56,32.1,54)
./turborc -e0 file -Fru -Ob " convert raw 32 bits input to bytes before processing possibly truncating large values
./turborc -e0 file -Ft -K3 -Ou " convert column 3 of a csv text file to 32 bits integers
./turborc -e0 file -pss -r47 " benchmark all basic functions using the dual speed predictor with paramters 4 and 7
./turborc -e0 file -psf -r1 " benchmark all basic functions using the fsm predictor with the paramter file FSM1.txt
see also Entropy Coder Benchmark
File: enwik8bwt generated BWT (wikipedia XML 100MB )
C Size
ratio%
C MB/s
D MB/s
Name
Description
23334248
23.33%
88.20
88.54
1:rc
o0
22394444
22.39%
82.46
86.35
2:rcc
o1
23116048
23.12%
74.11
79.26
3:rcc2
o2
22500640
22.50%
64.96
67.81
4:rcx
o8b =o1 context slide
23213968
23.21%
55.70
61.45
5:rcx2
o16b=o2 context slide
21605020
21.61%
25.48
26.98
9:rcms
o1 mixer/sse
21550184
21.55%
21.82
22.74
10:rcm2
o2 mixer/sse
20814372
20.81%
23.06
24.77
11:rcmr
o2 8b mixer/sse run
20789560
20.79%
22.68
24.70
12:rcmrr
o2 8b mixer/sse run > 2
23170048
23.17%
156.61
129.94
13:rcrle
RLE o0
22004856
22.00%
128.43
114.98
14:rcrle1
RLE o1
23412436
23.41%
73.08
70.74
17:rcu3
varint8 3/5/8 bits
21075240
21.09%
79.78
93.89
18:rcqlfc
QLFC
22275484
22.28%
91.81
96.60
19:bec
Bit EC
32703468
32.70%
54.48
58.27
26:rcg-8
gamma
32271396
32.27%
124.84
110.15
27:rcgz-8
gamma zigzag
34195068
34.20%
66.13
65.23
28:rcr-8
rice
36864024
36.86%
78.31
70.00
29:rcrz-8
rice zigzag
63541712
63.54%
552.28
87.84
42:cdfsb
static/decode search
63541712
63.54%
552.38
115.42
43:cdfsv
static/decode division
63976686
63.98%
479.38
104.09
44:cdfsm
static/decode division lut
63541720
63.54%
628.18
92.24
45:cdfsb
static interlv/dec. search
24811052
24.81%
177.39
104.30
46:cdf
byte adaptive
24811060
24.81%
191.80
98.96
47:cdfi
byte adaptive interleaved
31004892
31.00%
158.06
72.18
48:cdf-8
vnibble
31004896
31.00%
159.56
73.53
49:cdfi-8
vnibble interleaved
24848864
24.85%
116.76
202.27
56:ans auto
24848864
24.85%
126.57
175.43
57:ans sse
23068372
23.07%
128.06
83.57
64:ans auto
o1
23521656
23.52%
50.43
82.32
66:ansb
bitwise ans
100000012
100.00%
16495.29
16050.82
79:memcpy
BWT Benchmark: TurboRC/BwtSatan vs the best BWT compressors (2026-10)
C Size
ratio%
C MB/s
D MB/s
Rank
2026/10
320482718
61.83%
$\color{green}{\textbf{8.14}}$ $\color{green}{\textbf{11.41}}$ 5🥉
$\color{green}{\textbf{bwtsatan 9}}$
320722119
61.87%
8.02
6.57
7
bzip3 512
321845846
62.09%
7.82
8.06
9
bsc 0e2
324465458
62.60%
$\color{green}{\textbf{10.90}}$ $\color{green}{\textbf{17.30}}$ 2🏆
$\color{green}{\textbf{bwtsatan 8}}$
324569678
62.62%
10.53
15.32
6
bsc 0
329404800
63.55%
$\color{green}{\textbf{12.69}}$ $\color{green}{\textbf{18.42}}$ 1👑
$\color{green}{\textbf{bsc 0e0}}$
330833640
63.83%
8.36
9.70
8
kanzi 7
356284409
68.74%
6.85
16.78
10
kanzi 6
377603323
72.85%
11.16
$\color{green}{\textbf{21.37}}$ 4🥈
$\color{green}{\textbf{kanzi 5}}$
385167317
74.31%
$\color{green}{\textbf{12.97}}$ $\color{green}{\textbf{30.39}}$ 3🥇
$\color{green}{\textbf{bzip2}}$
395061965
76.22%
2.01
8.73
11
pulsar
518340175
100.00%
$\color{green}{\textbf{17926.96}}$ $\color{green}{\textbf{18431.84}}$ 12
$\color{green}{\textbf{memcpy}}$
- enwik8 - 100.000.000 bytes EN Wikipedia (bold = pareto) MB=1.000.000
C Size
ratio%
C MB/s
D MB/s
2026-10
20684938
20.68
9.02 16.04 TurboRC 20e9
20749619
20.7
10.70 9.19
bzip3 512
20786596
20.8
13.72 19.26 bsc 0e2
20920306
20.9
16.92 29.48 bsc 0
20982094
20.98
17.42 36.21 TurboRC 20e7
21224212
21.2
19.03 37.14 bsc 0e0
22011302
22.0
19.39 40.86 TurboRC 20e6
29008758
29.0
20.72 43.39 bzip2
C Size
ratio%
C MB/s
D MB/s
2026-10
47178114
22.26
10.59 16.79 TurboRC 20e9x -b68m
48391030
22.83
9.63 16.08 TurboRC 20e9
48400266
22.90
20.10 34.69 TurboRC 20e7x -b68m
48621296
22.9
14.51 18.05 bsc 0e2
48754005
23.0
12.49
11.73
bzip3 512
49142246
23.2
18.47 28.62 bsc 0
49560370
23.41
18.64 34.69 TurboRC 20e7
50110576
23.6
20.98 35.99 bsc 0e0
54592210
25.8
18.22
52.14 bzip2
C Size
ratio%
C MB/s
D MB/s
2026-10
18703190
17.84
10.89 19.07 TurboRC 20e9
18739661
17.9
12.69 11.12
bzip3 512
19058890
18.18
20.59 40.81 TurboRC 20e7
19255056
18.4
15.83
21.37
bsc 0e2
19371264
18.5
19.68
33.01
bsc 0
19614180
18.7
22.22 41.67 bsc 0e0
19809790
18.9
22.90 45.62 TurboRC 20e6
29433182
28.1
19.65
41.49
bzip2
- html8 : 100MB random html pages from Alexa 1m Top sites
C Size
ratio%
C MB/s
D MB/s
2026-10
13118618
13.12
15.85 26.16 TurboRC 20e9
13301850
13.3
17.61 16.32
bzip3 512
13397178
13.40
30.55 56.65 TurboRC 20e7
13601922
13.6
19.12
26.78
bsc 0e2
13688478
13.7
22.77
39.10
bsc 0
13918372
13.9
25.63
46.95
bsc 0e0
18162609
18.2
21.16
67.90 bzip2
C Size
ratio%
C MB/s
D MB/s
2026-10
163621162
16.36
8.03 15.75 TurboRC 20e9
163883906
16.4
12.92 22.30 bsc 0e2
164960746
16.5
15.18 34.07 bsc 0
165114202
16.51
15.06
37.90 TurboRC 20e7
167071950
16.7
16.54 42.30 bsc 0e0
169984250
17.0
11.27
9.89
bzip3 512
253977891
25.4
19.90 46.46 bzip2
- test1.txt - 1GB ZH (chineese) Wikipedia from GDCC2021
C Size
ratio%
C MB/s
D MB/s
2026-10
234873322
23.5
11.82 18.08 bsc 0e2
235560478
23.58
14.88 35.27 TurboRC 20e7
236077752
23.6
13.79
28.76
bsc 0
236200122
23.6
8.94
17.03
TurboRC 20e9
239463880
23.9
15.37 37.21 bsc 0e0
245841481
24.6
8.85
8.51
bzip3 512
257419802
25.7
18.03 41.98 TurboRC 20e4
359610522
36.0
21.51 42.38 bzip2
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
8243238
4.02%
$\color{green}{\textbf{79.92}}$ $\color{green}{\textbf{108.49}}$ 2🏆
$\color{green}{\textbf{TurboRC 20e8}}$ access_log_Jul95
8244226
4.02%
68.75
100.40
4🥈
TurboRC 20e9
access_log_Jul95
8425042
4.10%
$\color{green}{\textbf{126.27}}$ $\color{green}{\textbf{246.64}}$ 1👑
$\color{green}{\textbf{TurboRC 20e7t4}}$ access_log_Jul95
8425042
4.10%
97.02
179.81
3🥇
TurboRC 20e7
access_log_Jul95
9138568
4.45%
5.26
5.46
8
bzip3 512
access_log_Jul95
9449012
4.60%
20.29
41.56
5🥉
bsc 0e2
access_log_Jul95
9717048
4.73%
12.01
7.45
9
bcm
access_log_Jul95
9930919
4.84%
18.91
36.77
6
kanzi 7
access_log_Jul95
11960479
5.83%
14.85
80.88
7
bzip2
access_log_Jul95
205242368
100.00%
$\color{green}{\textbf{17405.22}}$ $\color{green}{\textbf{18395.84}}$ 10
$\color{green}{\textbf{memcpy}}$ access_log_Jul95
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
211743448
2.02%
$\color{green}{\textbf{104.96}}$ $\color{green}{\textbf{166.49}}$ 3🥇
$\color{green}{\textbf{bwtsatan 9}}$ cockroach.node1.log
211767848
2.02%
$\color{green}{\textbf{121.27}}$ $\color{green}{\textbf{177.21}}$ 1👑
$\color{green}{\textbf{bwtsatan 8}}$ cockroach.node1.log
214648516
2.04%
23.25
25.24
4🥈
bzip3 512
cockroach.node1.log
216660396
2.06%
$\color{green}{\textbf{156.26}}$ $\color{green}{\textbf{318.82}}$ 2🏆
$\color{green}{\textbf{bwtsatan 7}}$ cockroach.node1.log
267697716
2.55%
31.65
67.63
5🥉
bsc 0e2
cockroach.node1.log
434411520
4.13%
150.00
CLP 3
cockroach.node1.log
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
21712748
0.25%
$\color{green}{\textbf{406.85}}$ $\color{green}{\textbf{772.12}}$ 1👑
$\color{green}{\textbf{bwtsatan 8}}$ elasticsearch.log
21735160
0.25%
358.65
723.76
3🥇
bwtsatan 9
elasticsearch.log
22436580
0.26%
$\color{green}{\textbf{532.46}}$ $\color{green}{\textbf{1647.23}}$ 2🏆
$\color{green}{\textbf{bwtsatan 7}}$ elasticsearch.log
30904714
0.36%
46.85
62.38
6
bzip3 512
elasticsearch.log
31122700
0.36%
100.81
236.72
5🥉
bsc 0e2
elasticsearch.log
39703881
0.46%
267.47
521.73
4🥈
kanzi 7
elasticsearch.log
49049600
0.57%
11.39
CLP 19
elasticsearch.log
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
30123628
1.40%
$\color{green}{\textbf{112.97}}$ $\color{green}{\textbf{200.93}}$ 3🥇
$\color{green}{\textbf{bwtsatan 9}}$ hive-24hr.tar
30144608
1.40%
$\color{green}{\textbf{141.85}}$ $\color{green}{\textbf{213.82}}$ 2🏆
$\color{green}{\textbf{bwtsatan 8}}$ hive-24hr.tar
30857040
1.43%
$\color{green}{\textbf{178.61}}$ $\color{green}{\textbf{389.29}}$ 1👑
$\color{green}{\textbf{bwtsatan 7}}$ hive-24hr.tar
31426560
1.46%
19.78
CLP 19
hive-24hr.tar
33146648
1.54%
18.41
19.97
8
bzip3 512
hive-24hr.tar
36435456
1.69%
37.34
83.41
7
bsc 0e2
hive-24hr.tar
42084147
1.95%
83.48
133.05
4🥈
kanzi 7
hive-24hr.tar
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
274554794
0.39%
$\color{green}{\textbf{284.81}}$ $\color{green}{\textbf{542.61}}$ 3🥇
$\color{green}{\textbf{bwtsatan 9}}$ mongodb.tar
274610450
0.39%
$\color{green}{\textbf{320.66}}$ $\color{green}{\textbf{576.68}}$ 1👑
$\color{green}{\textbf{bwtsatan 8}}$ mongodb.tar
275093394
0.40%
40.55
46.68
6
bzip3 512
mongodb.tar
279664350
0.40%
$\color{green}{\textbf{412.07}}$ $\color{green}{\textbf{1095.35}}$ 2🏆
$\color{green}{\textbf{bwtsatan 7}}$ mongodb.tar
465340600
0.67%
74.33
181.88
7
bsc 0e2
mongodb.tar
485053806
0.70%
78.30
215.54
5🥉
bsc 0
mongodb.tar
502791034
0.72%
10.50
CLP 19
mongodb.tar
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
656628102
1.85%
$\color{green}{\textbf{151.99}}$ $\color{green}{\textbf{222.84}}$ 1👑
$\color{green}{\textbf{bwtsatan 8x -b2047m}}$ openstack-24hr.tar
656669010
1.85%
132.35
210.32
3🥇
bwtsatan 9x -b2047m
openstack-24hr.tar
666507010
1.88%
$\color{green}{\textbf{152.21}}$ $\color{green}{\textbf{337.53}}$ 2🏆
$\color{green}{\textbf{bwtsatan 7x -b2047m}}$ openstack-24hr.tar
801468704
2.26%
42.39
84.54
4🥈
bsc 0e2
openstack-24hr.tar
826207693
2.33%
23.13
25.43
5🥉
bzip3 512
openstack-24hr.tar
843991040
2.38%
10.00
CLP 19
openstack-24hr.tar
972564480
2.75%
264.00
CLP 3
openstack-24hr.tar
C Size
ratio%
C MB/s
D MB/s
Rank
Name
2026/10
4549138
1.10%
$\color{green}{\textbf{182.79}}$ $\color{green}{\textbf{274.52}}$ 2🏆
$\color{green}{\textbf{bwtsatan 8}}$ postgresql.tar
4552798
1.11%
153.00
252.35
4🥈
bwtsatan 9
postgresql.tar
4686638
1.14%
$\color{green}{\textbf{301.26}}$ $\color{green}{\textbf{679.05}}$ 1👑
$\color{green}{\textbf{bwtsatan 7t4}}$ postgresql.tar
4686638
1.14%
233.74
503.87
3🥇
bwtsatan 7
postgresql.tar
4909031
1.19%
27.34
30.10
7
bzip3 512
postgresql.tar
6785858
1.65%
33.91
84.32
6
bsc 0e2
postgresql.tar
6862874
1.67%
76.62
148.41
5🥉
kanzi 7
postgresql.tar
7472304
1.81%
11.70
12.47
11
bcm
postgresql.tar
8082307
1.96%
11.17
113.64
10
bzip2
postgresql.tar
8089600
1.96%
16.24
CLP 19
postgresql.tar
11017480
2.67%
0.38
$\color{green}{\textbf{5385.13}}$ 8
$\color{green}{\textbf{zstd 22}}$ postgresql.tar
13137953
3.19%
8.86
871.75
9
lzma 9
postgresql.tar
13363200
3.24%
164.00
CLP 3
postgresql.tar
411924480
100.00%
$\color{green}{\textbf{19112.16}}$ $\color{green}{\textbf{19610.78}}$ 12
$\color{green}{\textbf{memcpy}}$ postgresql.tar
./turborc -1 inputfile outputfile "order 0 simple
./turborc -2 inputfile outputfile "order 1 simple
./turborc -1 inputfile outputfile "order 0 simple
./turborc -2 inputfile outputfile "order 1 simple
./turborc -d inputfile outputfile "decompress
BWT (Burrows-Wheeler) + QLFC (Quantized Local Frequency Coding) + TurboRC ./turborc -20e# inputfile outputfile -l# [-Os] "bwt compression
#:0:store, 2:bit ec, 3/4:RLE, 5/6:RLE o1, 7/8:QLFC, 9:Max
./turborc -d inputfile outputfile "decompress
Download or clone TurboRC
git clone --recursive https://github.com/powturbo/Turbo-Range-Coder.git
cd Turbo-Range-Coder
Linux, MacOS, Windows (MingW), Clang,... (see also makefile) make
or
make AVX2=1 "compile for recent architectures >= haswell
Windows visual studio c++ project files in directory vs/vs2022
See examples in "turborc.c"
OS/Compiler (32 + 64 bits):
Windows: Visual C++ (2022)
Windows: MinGW-w64 makefile
Linux amd/intel: GNU GCC (>=4.6)
Linux amd/intel: Clang (>=3.2)
Linux arm: aarch64
MaxOS: XCode (>=9) + Apple M1
PowerPC ppc64le
IBM s390x
Last update: 10 OCT 2026
