Re: Mod (%) function in C/Objective-C?
Re: Mod (%) function in C/Objective-C?
- Subject: Re: Mod (%) function in C/Objective-C?
- From: Dave <email@hidden>
- Date: Mon, 11 Aug 2014 22:48:55 +0100
On 11 Aug 2014, at 22:26, Scott Ribe <email@hidden> wrote:
> On Aug 11, 2014, at 3:15 PM, koko <email@hidden> wrote:
>
>> When either a or n is negative, the naive definition breaks down and programming languages differ in how these values are defined.
>
> But that is only because what you call the "naive definition" is incorrect. The actual definition is precise and covers that case, and some programming languages just do not implement it.
>
If there were an Integer mod function in the Standard C Library, hopefully, people would start using this and only use % in the case of remainder. Otherwise the temptation is to handle it specially in your code one place at a time rather than calling a function, which makes testing and maintenance a nightmare.
Dave
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