# \#fortran

**URL:** https://forum.access-hive.org.au/tag/fortran/127.md

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## [How to use ieee\_arithmetic module in Fortran?](https://forum.access-hive.org.au/t/how-to-use-ieee-arithmetic-module-in-fortran/6761)

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**Author:** [@hye](https://forum.access-hive.org.au/u/hye)\
**Replies:** 7\
**Last updated:** [5 August 2026 06:44 UTC](https://forum.access-hive.org.au/t/how-to-use-ieee-arithmetic-module-in-fortran/6761 "2026-08-05T06:44:15Z")

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Thanks Charles. Yes, I think f2py works now. However, there is a separate issue. What should I do if I want to use module ieee\_arithmetic? Or should I use something else - what I need is to test if a value is NaN.

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## [Explanation on how to pass arrays as arguments efficiently in Fortran](https://forum.access-hive.org.au/t/explanation-on-how-to-pass-arrays-as-arguments-efficiently-in-fortran/473)

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**Author:** [@clairecarouge](https://forum.access-hive.org.au/u/clairecarouge)\
**Replies:** 0\
**Last updated:** [24 February 2023 04:59 UTC](https://forum.access-hive.org.au/t/explanation-on-how-to-pass-arrays-as-arguments-efficiently-in-fortran/473 "2023-02-24T04:59:00Z")

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I found this wiki page which I think is a good summary of how to pass arrays to functions efficiently in Fortran. It has a nice summary table of what to expect for different types of arrays. It also has a section on how …

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## [Fortran MPI-parallel unit testing with pFUnit](https://forum.access-hive.org.au/t/fortran-mpi-parallel-unit-testing-with-pfunit/443)

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**Author:** [@aekiss](https://forum.access-hive.org.au/u/aekiss)\
**Replies:** 7\
**Last updated:** [23 February 2023 23:10 UTC](https://forum.access-hive.org.au/t/fortran-mpi-parallel-unit-testing-with-pfunit/443 "2023-02-23T23:10:16Z")

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I just came across this, which might be of interest. I know nothing about it other than it is used in CIME, which in turn is part of the CESM infrastructure.