overloading == with different data types

I can't seem to figure out how to overload the == operator. I want to add a float and a float* by taking the float and adding it's value to the value I get by doing temp.poi=*point. However, my compiler doesn't seem to recognize this, it says when I try to use it the use is invalid. I'm guessing that you can't add values of different types, but if anyone knows how, please, help.

You can by casting them. But operator-overloading is for user-defined types, and float and float* are not.

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overload the == operator. I want to add a float and a float*

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Then why do you need to overload the operator== ?

like rmullen3 said "just cast it"