Fix undefined behavior + make some ifdefs more readable

[mrexodia]

Nothing big here, just some minor changes I had in my local repo

[yhirose]

@mrexodia, thanks for the feedback. Which part of your change is related to 'undefined behavior'?

[mrexodia]

The underscore+capital letter is reserved: https://stackoverflow.com/questions/228783/what-are-the-rules-about-using-an-underscore-in-a-c-identifier

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On Sun, 21 Oct 2018 at 08:05, yhirose ***@***.***> wrote: @mrexodia <https://github.com/mrexodia>, thanks for the feedback. Which part of your change is related to 'undefined behavior'? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#98 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACWCmVhvKH0PrzOEqIe6uTmEJqg2SSwKks5unA6qgaJpZM4Xb1Xg> .

[yhirose]

@mrexodia, thanks for the information!