sorting a vector of floats

I'm wondering how I can sort a vector of floats.

I found various answers how to sort a vector with custom objects and adding compare method to them.

But what if I'm just want to sort a vector of regular floats.

e.g. std::vector<float> var {1.f, -3.14f, .12f}; ?

I thought about this easy approach: std::sort(var.begin(), var.end()); but this gives me the following error:

'_First': you cannot assign to a variable that is const

'_Next1': you cannot assign to a variable that is const

'_Next1': you cannot assign to a variable that is const