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Require function to round

Posted on 2013-06-03
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Last Modified: 2013-06-06
Hi, I need function to round numbers in C#.

Though it is available, it rounds of 0.5 as 0. I need this to round off as 1 and not 0.

Means, 20.5 to round as 21 and 0.5 to round as 1 and 2.5 to round as 3 and so on...
But if it is 2.4 then it should round off as 2 as it does right now
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Question by:GRChandrashekar
5 Comments
 
LVL 25

Expert Comment

by:chaau
ID: 39218094
See very nice explanation on StackOverflow
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Author Comment

by:GRChandrashekar
ID: 39218099
Where is the required function but ?
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LVL 4

Expert Comment

by:MrC63
ID: 39218115
The quick and easy way to do this is to add .00001 value to the original value, and then use the Math.Round function.  If the value was originally 2.5, it will now be 2.50001.  By doing this, it won't matter if use Bankers method of rounding which rounds to the lower place when the value is at the midpoint.  The value will always be above the midpoint, but never high enough to impact anything other than the midpoint. This then then allows the Math.Round function to round upwards instead of down if or when the value is precisely halfway.
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LVL 42

Expert Comment

by:Meir Rivkin
ID: 39218187
double d = 0.5;
double round = (d - Math.Floor(d)) >= .5 ? Math.Ceiling(d) : Math.Floor(d);

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Accepted Solution

by:
Kalpesh Chhatrala earned 2000 total points
ID: 39220929
try like below. it will help you to Resolve your problem.

Math.Round(value, MidpointRounding.AwayFromZero);


Ref :
http://msdn.microsoft.com/en-us/library/ef48waz8.aspx
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