# Developer notes¶

• To update the version number, this needs to be done by hand in the following places:

• docs/conf.py for sphinx
• python/setup.py for the python pkg version
• include/defs.h
• CHANGELOG: don’t forget to describe the new features and changes, folding lines at 80 chars.
• There are some sphinx tags in the source code, indicated by @ in comments. Please leave these alone since they are needed by the doc generation.

• If you add a new option field (recall it must be plain C style only, no special types) to include/nufft_opts.h, don’t forget to add it to include/finufft.fh, matlab/finufft.mw, python/finufft/_finufft.py, and the julia interface, as well a paragraph describing its use in the docs. Also to set its default value in src/finufft.cpp.

• Developers changing MATLAB/octave interfaces or docs, see matlab/README

• Developers changing overall web docs, see docs/README

• If you change any of the doc sources, which includes any of the above four items, the easiest way to regenerate everything needed is via make docs. See makefile for what’s going on here. Also, do not edit files docs/*.doc since these are machine-generated; your changes will be overwritten. Instead edit files *.docsrc once you have understood how the bash scripts act on them.

• For testing and performance measuring routines see test/README and perftest/README. We need more of the latter, eg, something making performance graphs that enable rapid eyeball comparison of various settings/machines.

• Continuous Integration (CI). See files for this in .github/workflows/. It currently tests the default makefile settings in linux, and three other make.inc.* files covering OSX and Windows (MinGW).

• Installing MWrap. This is needed only to rebuild the matlab/octave interfaces. MWrap is a very useful MEX interface generator by Dave Bindel, now maintained and expanded by Zydrunas Gimbutas. Make sure you have flex and bison installed to build it. As of FINUFFT v.2.0 you will need a recent (>=0.33.10) version of MWrap. Make sure to override the location of MWrap by adding a line such as:

MWRAP = your-path-to-mwrap-executable


to your make.inc, and then you can use the make mex task.