5b53e4394a
The Plot isoline `.value` checks asserted at WithinAbs(value, 1e-10), which is platform-fragile: libm transcendentals (exp/log/pow) differ in the last few bits across glibc, Apple libm, and UCRT, and that propagates through the EOS solvers into ~1e-9 to 1e-10 relative differences in the computed range bounds. Reference data regenerated on macOS in #2749 therefore broke the Linux CI. Switch to `WithinAbs(v, abs) || WithinRel(v, 1e-8)`: keeps the absolute tolerance as a near-zero safety net and adds a 1e-8 relative tolerance that comfortably covers the observed cross-platform jitter (worst case ~5e-9 rel for p_isolines[4]). Updated the generator script and re-ran it to regenerate src/CoolPropPlot.cpp. Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Welcome to CoolProp
CoolProp is a thermophysical property database and wrappers for a selection of programming environments. It offers similar functionality to REFPROP, but CoolProp is open-source and free. It was originally developed by Ian Bell, at the time a post-doc at the University of Liege, in Liege, Belgium.
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CoolProp has flexible licensing terms: Commercial - ok! Academic? - ok!
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For Python, get the latest release via
pip install coolprop
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... other binaries are available from SourceForge
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There is also a bleeding edge nightly build of the development version.
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The documentation is available for the latest release and the development version
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For any kind of question regarding CoolProp and its usage, you can ask the CoolProp Discussions
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... you might also find answers in our FAQ
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If you found a bug or have an issue that requires the developers to become active, please file an issue in our issue tracker
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Contributions to this project are welcomed and encouraged! If you wish to contribute bug fixes, patches, or new features, wrappers, or material properties, please submit a Pull Request with your code.
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If you are new to Git and Github, please see the CoolProp Wiki for guidance on becoming a contributor to the project.
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Have a look at the coverity stats
