Different results depending on endianess about little-cms

[mm2]

Hi. Thanks for reporting, unfortunately I have no way to access a big endian machine anymore. Have you tried with 2.15?
Could you run the testbed on the big endian machine? i.e "make check" Does it pass the tests?
Thanks!

[sommerluk]

Well, I have no direct access to a bigendian machine either. I use Docker + qemu to emulate one within the CI. This can be done also for LittleCMS: https://github.com/sommerluk/Little-CMS/blob/1ee56666795bf695c2e1b24c4a034343bfde0b44/.circleci/config.yml

Result for current lcms master:
log.txt

[mm2]

Finally I have been able to check the testbed on an very old PowerPC that is true big endian. There is no issue there.
Maybe is something on the emulation?
Keep in mind a very small negative number on L* can happen on profiles where the zero is calculated. Floating point zero is quite difficult to obtain when it comes from a complex calculation, and we are talking about 0.00000000000000022

[sommerluk]

Indeed, the difference is very small. I only noticed it because I had a failing unit test that checked that the results of a function that relies on LittleCMS are within the given range.

Should we close this report as non-issue?

[mm2]

Should we close this report as non-issue?

Sure. Closed as I cannot reproduce it anyway.