MATLAB is missing one essential rounding function!
24 ビュー (過去 30 日間)
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Okay, besides the normal rounding function we all know and love ("round"; rounding towards the nearest integer), we have the three special rounding functions: ceil, floor, and fix. We can use them to round towards positive infinity, negative infinity, and towards zero, respectively. But there is no function for rounding AWAY FROM ZERO.
Come on, guys. Let's complete the group of functions and get that last one defined and implemented. I need it right now.
0 件のコメント
採用された回答
Daniel Shub
2011 年 10 月 26 日
ceilfix = @(x)ceil(abs(x)).*sign(x);
or some such nonsense name.
ceilfix(-2:0.2:2)
2 件のコメント
その他の回答 (3 件)
Sean de Wolski
2011 年 10 月 26 日
function out = rafz(in)
%out = rafz(in), round away from zero
%SCd 10/26/2011
%
out = max(abs(ceil(in)),abs(floor(in))).*sign(in);
end
Now you have it! I couldn't come up with a better title, unfortunately.
Jim Luschen
2011 年 10 月 26 日
3 件のコメント
Daniel Shub
2011 年 10 月 26 日
But who is going to get their answer accepted? Sean was first and had a good name. I was second and had a crappy name, but potentially a better algorithm.
Make a request: http://www.mathworks.com/support/service_request/login_servicerequests.html?targetURL=/support/service_requests/contact_support.do
Tom Smits
2013 年 3 月 14 日
I was surprised as well that there was no 'round away from zero' function in MATLAB but eventually I figured that the solution is really simple, so I thought I'd share my findings:
ceilfix(x) = sign(x)+fix(x)
cheers
2 件のコメント
Teja Muppirala
2013 年 3 月 15 日
This won't work for nonzero integers:
ceilfix(1.0) = sign(1.0) + fix(1.0) = 1.0 + 1.0 = 2
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