Silly newbie question - Carrot character (^)

[Matty Sarro]

Hey Everyone,
Just curious - I'm working on a program which includes a calculation of a
circle, and I found myself trying to use pi*radius^2, and getting errors
that data types float and int are unsupported for "^". Now, I realized I was
making the mistake of using '^' instead of "**". I've corrected this and its
now working. However, what exactly does ^ do? I know its used in regular
expressions but I can't seem to find anything about using it as an operator.
Sadly my google foo is failing since the character gets filtered out.
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