C++ builtin to swap two numerical values?

Question

Does C++ have a built in such as part of STL to swap two numerical values instead of doing:

int tmp = var1;

var1 = var2;
var2 = tmp;

Something like this:

std::swapValues(var1, var2);

Where swapValues is a template.

Answer 1

Use std::swap

std::swap(var1, var2);