Bugfix/math missing static

[finger563]

Description

• Added missing static keyword to global functions defined in fast_math.hpp
• Updated static funtions in fast_math and vector2d to have [[maybe_unused]] attribute to prevent spurious compiler warnings if they are not used.
• Rebuilt docs

Motivation and Context

In more complex projects where you may include the fast_math header in multiple places, you will end up getting multiple definition errors for the symbols defined in fast_math.hpp. This fixes that issue. It also fixes the benign (but annoying) spurious warnings about functions defined but not used such as in the screenshot below.

How has this been tested?

Building the math example.

Screenshots (if appropriate, e.g. schematic, board, console logs, lab pictures):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Hardware (schematic, board, system design) change
• Software change

Checklist:

• My change requires a change to the documentation.
• I have added / updated the documentation related to this change via either README or WIKI

Software

• I have added tests to cover my changes.
• I have updated the .github/workflows/build.yml file to add my new test to the automated cloud build github action.
• All new and existing tests passed.
• My code follows the code style of this project.