Fix compilation warning with GCC

[srinsoz]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.39%. Comparing base (30a9ccf) to head (5df121d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #14470   +/-   ##
=======================================
  Coverage   98.39%   98.39%           
=======================================
  Files         161      161           
  Lines       21204    21204           
=======================================
  Hits        20864    20864           
  Misses        340      340           

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[github-actions]

Code size report:

   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS

[andrewleech]

Hi, your first few commits looked like good cleanups of compiler warnings thanks!
The latest couple however look like they belong on a personal project / personal branch instead perhaps?

[srinsoz]

You are right. I've made an error during the pull request creation. The three commits that start with "yoctopuce specific" must be ignored. Sorry for this mistake. Do you want that I create a clean new pull request?

[andrewleech]

It shouldn't need a new pull request, you could start a new branch for the extra commits, then reset this branch to the commits meant to share.

[srinsoz]

That should be right now. Sorry for the extra work. I'm not use to Git.

[dpgeorge]

What exactly is the error/warning that's lead to this change? And why isn't the change also needed for tau , e and pi constants?

Is appending a u enough, or maybe just ul?

[srinsoz]

Actually the warning does not come form gcc but from Microsoft cl compiler.

The exact output is:

../../../mpy/micropython/py/modmath.c(376): warning C4307: '+': integral constant overflow
../../../mpy/micropython/py/modmath.c(377): warning C4307: '+': integral constant overflow

We have fix only these two line because they are the ones that generate the warnings, but
It may be a good idea to update all the definitions.

[dpgeorge]

I guess it's because these constants start with 0x7f and 0xff, but the others start with 0x40.

Is it possible to use u or ul instead of ull?

[srinsoz]

Nop. Only ull will work.
Which is the way to specify an unsigned 64 bit integer.
https://gcc.gnu.org/onlinedocs/gcc/Long-Long.html