Is there any builtin round(), floor(), ceil() in Eigen?

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sth4nth Registered Member Posts 13 Karma 0	Is there any builtin round(), floor(), ceil() in Eigen? Fri Oct 15, 2010 1:20 pm round(), floor(), ceil() are very useful functions. It will be great If there are vectorized versions of them in EIgen.
bjacob Registered Member Posts 658 Karma 3	Re: Is there any builtin round(), floor(), ceil() in Eigen? Sat Oct 16, 2010 12:58 pm We don't have them because we don't want to become an all-purpose math library, only a matrix library and related features, but we've never needed round/ceil/floor in this context. Join us on Eigen's IRC channel: #eigen on irc.freenode.net Have a serious interest in Eigen? Then join the mailing list!
ggael Moderator Posts 3447 Karma 19 OS	Re: Is there any builtin round(), floor(), ceil() in Eigen? Tue Oct 19, 2010 11:12 am I disagree, I think these functions are very useful, e.g., when you deal with 2D/3D grids...
bjacob Registered Member Posts 658 Karma 3	Re: Is there any builtin round(), floor(), ceil() in Eigen? Tue Oct 19, 2010 11:16 am OK, well feel free to add them then Join us on Eigen's IRC channel: #eigen on irc.freenode.net Have a serious interest in Eigen? Then join the mailing list!
fearhope Registered Member Posts 20 Karma 0 OS	Re: Is there any builtin round(), floor(), ceil() in Eigen? Fri Mar 30, 2012 11:14 am I agree that those are useful function. so, if not possible to add many functions under the Matrix definition, how about include a function to call user-defined function by a reference ? for example: double floorX(double &a) { b=floor(a) return b; } Matrix2D A(2,2); A.iterate(floorX); // call user-defined function please take into account this~ I think it's good to get better performance. compared to Matlab, it's still far away in terms of efficiency. hope it to be real !
fearhope Registered Member Posts 20 Karma 0 OS	Re: Is there any builtin round(), floor(), ceil() in Eigen? Fri Mar 30, 2012 12:01 pm I have found really what I want in KDE. ==> viewtopic.php?t=47915 haha~ now I could make beautiful codes ! fearhope wrote:I agree that those are useful function. so, if not possible to add many functions under the Matrix definition, how about include a function to call user-defined function by a reference ? for example: double floorX(double &a) { b=floor(a) return b; } Matrix2D A(2,2); A.iterate(floorX); // call user-defined function please take into account this~ I think it's good to get better performance. compared to Matlab, it's still far away in terms of efficiency. hope it to be real !