Special concepts

definitions of concepts that restrict template parameters in flippy's classes.

Concepts
concept	fp::floating_point_number
	Here we implement the concepts of a floating point number.
concept	fp::indexing_number
	Here we implement the concepts of a positive integer number that is used throughout the code for indexing.

definitions of concepts that restrict template parameters in flippy's classes.

Note

For more information on what c++ concepts are in general see this cpp reference page.