Overview
The cdecimal package is a fast drop-in replacement for the decimal module in Python’s standard library. Both modules provide complete implementations of Mike Cowlishaw/IBM’s General Decimal Arithmetic Specification.
Testing
Both cdecimal and the underlying library - libmpdec - are extremely well tested. libmpdec is one of the few open source projects with 100% code coverage. cdecimal is rigorously tested against decimal.py.
Short benchmarks
Typical performance gains are between 30x for I/O heavy benchmarks and 80x for numerical programs. In a database benchmark, cdecimal exhibits a speedup of 12x over decimal.py.
decimal |
cdecimal |
speedup |
|
|---|---|---|---|
pi |
42.75s |
0.58s |
74x |
telco |
172.19s |
5.68s |
30x |
psycopg |
3.57s |
0.29s |
12x |
Documentation
Since cdecimal is compatible with decimal.py, the official documentation is valid. For the few remaining differences, refer to the second link.
Linux Notes
The build process requires a working C compiler and a full Python install with development headers. Linux distributions often ship the Python header files as a separate package, called python-dev or python-devel.
Install headers on Debian/Ubuntu:
sudo apt-get install python-dev
Windows Notes
Links
Release files for m3-cdecimal 2.3
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| m3-cdecimal-2.3.tar.gz | 640.0 kB | Without provenance | Details for m3-cdecimal-2.3.tar.gz |
Release files / m3-cdecimal-2.3.tar.gz
| Download URL | m3-cdecimal-2.3.tar.gz |
|---|---|
| Size | 640.0 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
55406e987fc6fabf21925d1496371d1ae55e61f66b62f2eaa5e152d0e56f3771
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Security for m3-cdecimal 2.3
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