Apache Commons Complex Numbers

Clone this repo:
  1. c4dc88c Ensure divide correctly scales numbers to avoid over/underflow. by aherbert · 5 days ago master
  2. 62ee60b Modify hypotenuse scaling formula for x^2+y^2 in log(). by aherbert · 6 days ago
  3. a79dcaa Change x2y2m1 summation algorithm. by aherbert · 6 days ago
  4. f7e5a7c Reinstate ulps tolerance in test of Complex::log. by aherbert · 6 days ago
  5. f48844b Approximation of sinh/cosh using exp can be overflow/underflow safe. by aherbert · 7 days ago

Apache Commons Numbers

Build Status Coverage Status Maven Central License Code Quality: Java

The Apache Commons Numbers project provides number types and utilities.


More information can be found on the homepage. The JavaDoc can be browsed. Questions related to the usage of Apache Commons Numbers should be posted to the user mailing list.

Where can I get the latest release?

You can download source and binaries from our download page.

Alternatively you can pull it from the central Maven repositories:



We accept PRs via github. The developer mailing list is the main channel of communication for contributors. There are some guidelines which will make applying PRs easier for us:

  • No tabs! Please use spaces for indentation.
  • Respect the code style.
  • Create minimal diffs - disable on save actions like reformat source code or organize imports. If you feel the source code should be reformatted create a separate PR for this change.
  • Provide JUnit tests for your changes and make sure your changes don't break any existing tests by running mvn clean test.

If you plan to contribute on a regular basis, please consider filing a contributor license agreement. You can learn more about contributing via GitHub in our contribution guidelines.


Code is under the Apache Licence v2.


You like Apache Commons Numbers? Then donate back to the ASF to support the development.

Additional Resources