function enumerated() {
	// NOTE: the following should match the C `matrix_triangles.h` enumeration!!!!
	return {
		// Upper triangular part of a matrix:
		'upper': 121,

		// Lower triangular part of a matrix:
		'lower': 122
	};
}
Returns an object mapping supported matrix triangles to integer values for purposes of C inter-operation.

## Notes

-   Downstream consumers of this mapping should **not** rely on specific integer values (e.g., `upper == 121`). Instead, the object should be used in an opaque manner.
-   The main purpose of this function is JavaScript and C inter-operation of array objects.

@returns {Object} object mapping supported matrix triangles to integer values

@example
var table = enumerated();
// returns <Object>