uniaccurate
Error-free transforms and accurate summation/dot-product for floating-point arithmetic — a Python binding over UniAccurate, a Nim library with a C ABI core.
Naive summation accumulates O(n) rounding error. uniaccurate gives you
progressively stronger alternatives without leaving Python: pairwise
(O(log n)), compensated (Kahan/Neumaier/Klein), and correctly-rounded
(Shewchuk's adaptive-precision expansion, the Neal small superaccumulator) —
plus the matching compensated and correctly-rounded dot products.
Install
pip install uniaccurate
Prebuilt wheels ship for Linux, macOS and Windows, CPython 3.9-3.13. No Nim or C toolchain needed at install time.
Quick start
import uniaccurate
s, e = uniaccurate.two_sum(1.0, 2e16) # (2e16, 1.0) -- error recovered exactly
uniaccurate.kahan_sum([0.1] * 10) # 1.0
uniaccurate.shewchuk_sum([1.0, 1e100, 1.0, -1e100]) # 2.0, correctly rounded
uniaccurate.exact_dot([1.0, 2.0], [3.0, 4.0]) # 11.0, correctly rounded
uniaccurate.scaled_norm([3.0, 4.0]) # 5.0
What's included
| Category | Functions |
|---|---|
| Error-free transform | two_sum |
| Summation | naive_sum, pairwise_sum, pairwise_sum_iterative |
| Compensated summation | kahan_sum, neumaier_sum, klein_sum, sum_k |
| Correctly-rounded summation | shewchuk_sum, exact_sum, oro_sum, acc_sum, near_sum |
| Dot product | naive_dot, dot2, dot_k, exact_dot |
| Diagnostics | condition_number |
| Statistical reductions | scaled_mean, scaled_norm, centered_sum_squares, centered_cross_product, centered_cosine_similarity, centered_projection_coefficient |
Every function raises TypeError on non-numeric input rather than silently
coercing; see each docstring (help(uniaccurate.kahan_sum)) for the exact
error/NaN/Inf behavior.
Links
- Source, Nim API, C ABI, ADRs: https://github.com/lituus-lab/UniAccurate
- Issues: https://github.com/lituus-lab/UniAccurate/issues
- License: Apache-2.0 (
LICENSEin the source repo)
Development
Building from source (contributing, or a platform without a prebuilt wheel)
needs a Nim toolchain — see CONTRIBUTING.md in the source repo.
nimble pyLib # build the shared lib the extension links against
cd py && python3 setup.py build_ext --inplace # build extension
cd py && python3 -m pytest -q # test
1 maintainer
Metadata
1 maintainer
Release files for uniaccurate 1.1.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| uniaccurate-1.1.0.tar.gz | 249.4 kB | Details |
Built distributions (wheels)
Total release size: 5.3 MB
Release files / uniaccurate-1.1.0.tar.gz
| Download URL | uniaccurate-1.1.0.tar.gz |
|---|---|
| Size | 249.4 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
8bcb7643219afe3474063d0b67a94c590371a9ed1f6e7640ca6d7b7b930408f0
|
|
BLAKE2b-256 checksum How to use checksums |
187382dd5b3a8a43968982d55654402373ccb2ce76f12bf8dcf6b33495e68d8e
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp314-cp314-win_amd64.whl
| Download URL | uniaccurate-1.1.0-cp314-cp314-win_amd64.whl |
|---|---|
| Size | 124.2 kB |
| Tags | CPython 3.14 Windows x86-64 |
|
SHA-256 checksum How to use checksums |
6f48bf4e8faaf7a43d0621fc8a1d8680139c1b8450f796f1fd099a876e030474
|
|
BLAKE2b-256 checksum How to use checksums |
16cd85ad5f19eee78caeb2b4486cd0ce5e0cc33b351fe75ae5b6da4e062c8537
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp314-cp314-manylinux2014_x86_64.manylinux_2_17_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp314-cp314-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
|---|---|
| Size | 655.2 kB |
| Tags | CPython 3.14 Linux glibc 2.17+ x86-64 |
|
SHA-256 checksum How to use checksums |
8daf4bd8ffde12755b7a0dc38b31ed1d10c35cb6939c5d0308d6fb16003ebb01
|
|
BLAKE2b-256 checksum How to use checksums |
6ab8cded098e3964b1e425c62ff8c43ced1453f402a530ae706e8d2dbc9be612
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp314-cp314-macosx_26_0_arm64.macosx_10_15_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp314-cp314-macosx_26_0_arm64.macosx_10_15_x86_64.whl |
|---|---|
| Size | 231.4 kB |
| Tags | CPython 3.14 macOS 10.15+ x86-64 macOS 26.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
a751685044e046d423e5f688f881c0f961a12945bd56ff047d3c9170e8a99cc9
|
|
BLAKE2b-256 checksum How to use checksums |
284ff2253dd1b8d5571eca47bd0fab2bbd919336785130402ad89297133b08ae
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp313-cp313-win_amd64.whl
| Download URL | uniaccurate-1.1.0-cp313-cp313-win_amd64.whl |
|---|---|
| Size | 120.7 kB |
| Tags | CPython 3.13 Windows x86-64 |
|
SHA-256 checksum How to use checksums |
945b7b77340640ab435f7e9bc591278edb2d3f24c8fd7d8706fad04e2e19ccd4
|
|
BLAKE2b-256 checksum How to use checksums |
b4eb5c4f0c19543256f98051446ce4a8449f08861f7cf94dc95ae123a3587295
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
|---|---|
| Size | 659.5 kB |
| Tags | CPython 3.13 Linux glibc 2.17+ x86-64 |
|
SHA-256 checksum How to use checksums |
bb232604eb1afd2e54199ca0bd8f3c606054615f05caeeb88ed7a57b2ed71d84
|
|
BLAKE2b-256 checksum How to use checksums |
57e193f5e6a09698cabf1698fb2ef28695c544d0c8cebc41f0ee97b3ac3a3ccd
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp313-cp313-macosx_26_0_arm64.macosx_10_13_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp313-cp313-macosx_26_0_arm64.macosx_10_13_x86_64.whl |
|---|---|
| Size | 231.3 kB |
| Tags | CPython 3.13 macOS 10.13+ x86-64 macOS 26.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
bf875a76a7374b580e6fec7155f688576a08532a820d03a446cdcf8d269e4c86
|
|
BLAKE2b-256 checksum How to use checksums |
899bca70cb1538476f288be2ef5c9f5c8d3bfa2390de156044405609083e61e5
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp312-cp312-win_amd64.whl
| Download URL | uniaccurate-1.1.0-cp312-cp312-win_amd64.whl |
|---|---|
| Size | 120.7 kB |
| Tags | CPython 3.12 Windows x86-64 |
|
SHA-256 checksum How to use checksums |
37ef6e6c9baa55aed0ba76542af0d9e6ddcfed672b5fe5ffb571b0fbe7d3786e
|
|
BLAKE2b-256 checksum How to use checksums |
0a235af94b6ab5006dba83672d64db25e0d608c10498559ec1ad813417d07561
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
|---|---|
| Size | 663.3 kB |
| Tags | CPython 3.12 Linux glibc 2.17+ x86-64 |
|
SHA-256 checksum How to use checksums |
c41ed4929c2ba653668022c072fe756811b1fb78715fe2815dea3f00ded8e147
|
|
BLAKE2b-256 checksum How to use checksums |
cc67271fcb723924a72150d22b103826eb7ff3b8ea367e7c94b7e296ca492584
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp312-cp312-macosx_26_0_arm64.macosx_10_13_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp312-cp312-macosx_26_0_arm64.macosx_10_13_x86_64.whl |
|---|---|
| Size | 231.8 kB |
| Tags | CPython 3.12 macOS 10.13+ x86-64 macOS 26.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
6bdf63970b08f91d54f511d881c8bc1ec3ebc770e27b2f0a999a0ce0937768b1
|
|
BLAKE2b-256 checksum How to use checksums |
b052be2325b7c38c1eeac8e00d10891e4b21602d3b6b1bba571230b7bc945b49
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp311-cp311-win_amd64.whl
| Download URL | uniaccurate-1.1.0-cp311-cp311-win_amd64.whl |
|---|---|
| Size | 116.7 kB |
| Tags | CPython 3.11 Windows x86-64 |
|
SHA-256 checksum How to use checksums |
c2bde56f38ea41ffa1a1b7dcc2bed12aed6f9c22ac9955351031f7f5b59c8c58
|
|
BLAKE2b-256 checksum How to use checksums |
411741a6dd242829e2958111dd8587ab5af734dc74e404a6c0fa5b22e6cc83c3
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
|---|---|
| Size | 678.2 kB |
| Tags | CPython 3.11 Linux glibc 2.17+ x86-64 |
|
SHA-256 checksum How to use checksums |
aa79d22a8df1b759b46f15c7d30e7d75695ccf19e9a0118848ab9ea0126b6a81
|
|
BLAKE2b-256 checksum How to use checksums |
26a2c75baf973ecdf301d8a76fc0a6028b371737634f50f1e943aebd470e225a
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp311-cp311-macosx_26_0_arm64.macosx_10_9_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp311-cp311-macosx_26_0_arm64.macosx_10_9_x86_64.whl |
|---|---|
| Size | 230.8 kB |
| Tags | CPython 3.11 macOS 10.9+ x86-64 macOS 26.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
4cb1c65fdf4fe38750112651a670df597b26cebdcf2abee1cb1bfde045be844b
|
|
BLAKE2b-256 checksum How to use checksums |
91aed21cede00b83ed30709ce18e314e1ce04086dae552f06d7df01c37449b80
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp310-cp310-win_amd64.whl
| Download URL | uniaccurate-1.1.0-cp310-cp310-win_amd64.whl |
|---|---|
| Size | 116.8 kB |
| Tags | CPython 3.10 Windows x86-64 |
|
SHA-256 checksum How to use checksums |
f24390cf4ae16bddcc6b032743db34d7643348f31c371de2f395d24d3e6fd39f
|
|
BLAKE2b-256 checksum How to use checksums |
c886d4da4ffebc285dd93ff21b23a14077719db3fd6d6b52541fc4976110914f
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
|---|---|
| Size | 649.4 kB |
| Tags | CPython 3.10 Linux glibc 2.17+ x86-64 |
|
SHA-256 checksum How to use checksums |
dce2e2dc5033083fac1189b90e253081e40f38f52645b2cceb985efca83f6ac1
|
|
BLAKE2b-256 checksum How to use checksums |
f549909c369ece8416aa68c45a9013a8df8e48f15ea9f6a074274e2bb63add52
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency logRelease files / uniaccurate-1.1.0-cp310-cp310-macosx_26_0_arm64.macosx_10_9_x86_64.whl
| Download URL | uniaccurate-1.1.0-cp310-cp310-macosx_26_0_arm64.macosx_10_9_x86_64.whl |
|---|---|
| Size | 231.3 kB |
| Tags | CPython 3.10 macOS 10.9+ x86-64 macOS 26.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
dddfdff740511ca980d016082d662c545d1161e38b7ab7ac0b6acdb1b0452672
|
|
BLAKE2b-256 checksum How to use checksums |
2d996764aff6148c80a0ec8259008a0c25704fabbdb22d8711cae0fba6abc917
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Aug 31, 2026.
Transparency log
