Test integerness: Difference between revisions

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=={{header|Lua}}==
<lang lua>--[[Written by TAM]]--
function IsInt(What)
if tonumber(What) == What and math.floor(tonumber(What)) == tonumber(What) then
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IsInt(123123123123123):true
</pre>
 
=={{header|ooRexx}}==
<lang oorexx>/* REXX ---------------------------------------------------------------