Using the C++ Math Library

Programming Efficient Indices

If you use the same index repeatedly, store it in an mwIndex variable instead of creating it each time. The cost of creating mwIndex objects is low, but measurable. If you are bothered by having to type colon() too frequently, you can create an mwIndex variable with a shorter name,
mwIndex all, for example, and use it instead of the colon() function.

The mwIndex Class

Calling Library Functions