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Bug: FMath::Pow returning 1.#QNAN0

Development Programming & Scripting

unreal-engine

Shadowriver (Shadowriver) June 23, 2015, 4:08pm 2

Yes it is intended, it’s floating-point error

en.wikipedia.org

NaN

In computing, NaN (/næn/), standing for Not a Number, is a member of a numeric data type that can be interpreted as a value that is undefined or unrepresentable, especially in floating-point arithmetic. Systematic use of NaNs was introduced by the IEEE 754 floating-point standard in 1985, along with the representation of other non-finite quantities such as infinities. In mathematics, zero divided by zero is undefined[a] and is therefore represented by NaN in computing systems. The square root of...

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