remainder function

[Ether]

Originally Posted by 1075guy

If you have a function that works, then use it?

I do use it. But I don't want to be telling other people to use my custom function if there's already a perfectly good remainder function provided with FRC C++. I don't have access to a working C++ installation, otherwise I would test it myself. I am seeking help from knowledgeable C++ users on this forum.

I don't understand your qualm?

Honestly, that's because I don't have a qualm. I am perfectly calm.

I have not ever encountered a programming scenario where modulus division didn't solve my desire for a remainder, so I'm a bit lost.

I have encounted at least one such scenario, and that's why I posted this thread.

For example, the IEC60559 remainder function can take any angle and normalize it to the range -180..+180 with a single C instruction:

normalizedAngle = remainder(angle,360);

I'd like to know if the remainder function is supported in FRC C++ so I can recommend it to students who are trying to do this type of conversion.

Neither the fmod() function nor the % operator can replicate the functionality of the remainder() function without using a bunch of conditional logic

If there are any Java programmers following this thread, Java appears to have the IEC 60559 remainder function; in Java it is called IEEERemainder. See attachments. If someone would be willing to test that (compare it to the implementation I posted ealier in this thread) I'd be grateful.



qualm
/kwä(l)m/
Noun

1) An uneasy feeling of doubt, worry, or fear; a misgiving.
2) A momentary faint or sick feeling.

Synonyms
nausea - queasiness