WoW:USERAPI round: Difference between revisions

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m (→‎Code: Previous "correction" is incorrect. Check the talk page.)
Line 20: Line 20:
<pre>function round(number, decimals)
<pre>function round(number, decimals)
     return (("%%.%df"):format(decimals)):format(number)
     return (("%%.%df"):format(decimals)):format(number)
end</pre>
The above truncates after number of decimals.
The below rounds (note the 0+ makes it remove trailing 0's)
<pre>function round(number,decimals)
    return 0+(("%%.%df"):format(decimals)):format(number+.1^(decimals+1)/2)
end</pre>
end</pre>


Revision as of 02:07, 3 March 2010

This page documents a <i>user-defined function</i> that you can copy and paste into your addon. Replace PREFIX with your addon or lib prefix to avoid conflicts between different versions of these functions.

← User defined functions


Round a number off to n places. 

number = round(number, decimals)

Function Parameters

Arguments

number
Number. The number to round.
decimals
Number. Round to this many places.

Returns

number
Number. The rounded number.

Example

local number = round(math.pi, 3)
print(number) -- prints 3.142

Code

function round(number, decimals)
    return (("%%.%df"):format(decimals)):format(number)
end

See Also


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