JoeStrout: Created page with "Invalid math operations may result in a numeric value of NaN ("Not a Number"). These values have special semantics: they are not considered equal to anything, even themselves..."

2020-03-11T22:13:30Z

Created page with "Invalid math operations may result in a numeric value of NaN ("Not a Number"). These values have special semantics: they are not considered equal to anything, even themselves..."

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Invalid math operations may result in a numeric value of NaN ("Not a Number"). These values have special semantics: they are not considered equal to anything, even themselves. In fact NaN is the ''only'' value in MiniScript not equal to itself.

So if you need to find out whether a numeric value is NaN, just check whether it does not equal itself.

== Example ==
<ms>x = 0/0
print x // prints "nan" or "NaN", depending on the host platform
print x != x // prints 1 (true)</ms>

This could of course be wrapped up in a convenience function as follows.

<ms>isNan = function(x)
return x != x
end function</ms>

[[Category:How To]]

How to detect NaN - Revision history

JoeStrout: Created page with "Invalid math operations may result in a numeric value of NaN ("Not a Number"). These values have special semantics: they are not considered equal to anything, even themselves..."