[fpc-pascal] math round vs banker's round

Sven Barth pascaldragon at googlemail.com
Wed Aug 14 09:34:14 CEST 2013

Am 14.08.2013 08:47, schrieb David Emerson:
> Thanks for the suggestions, guys!
> José Mejuto wrote:
> > SimpleRoundTo I think.
> But I want an integer result, and this returns a floating point.
> Sven Barth wrote:
>> Take a look at SetRoundMode in unit Math:
>> http://www.freepascal.org/docs-html/rtl/math/setroundmode.html
> After calling SetRoundMode(rmNearest);
> I find that system.round() is still doing banker's rounding. Am I 
> missing something?
rmNearest is banker's rounding.
> I don't see this TfpuRoundingMode mentioned anywhere in the 
> documentation, other than the "get" and "set" functions for the same. 
> What does it effect?
Just click on TFPURoundingMode mentioned in the link.
> ...
> Anyway I guess I am going to have to write my own round() function :P
Seems so.


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