When working with Floating-point values in Go, what considerations need to 
be made?

The same for any other language?

The Spec says that "Floating-point values are comparable and ordered"
https://golang.org/ref/spec#Comparison_operators

So is comparing by some epsilon value not needed? or only for computed 
values?
http://www.cygnus-software.com/papers/comparingfloats/Comparing%20floating%20point%20numbers.htm

What is recommended (without external packages) when multiplying or adding 
Floating-point values? 
I know that internally those operations can be imprecise.
https://github.com/shopspring/decimal#faq
http://floating-point-gui.de/basic/

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