I have been programming in google Golang and have been enjoying it due to its brevity but I find it surprising that almost all its Math standard library methods are for the floating point type. Is there any particular reason why these methods do not exist for ints?
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The short answer is that Go is a successor to C, and C's standard math library is also defined almost exclusively in terms of single- and double-precision floating point values.
The longer answer is that in a statically-typed language without polymorphism or function overloading, like Go (or C), you need to settle on a type for a function to take and return in advance, and once you're going to deal with specific types in your math library, there are a lot more interesting operations on floating point numbers than integers. To pick a few examples
Note that this is not as onerous as it might seem if your input values are integers -- an integral value can be converted to a floating point value with a simple typecast, and mostly accurately.
So that's the story for languages like Go or C. Other languages have other options:
Go has none of these features, however.