Graphmath.Mat33.apply_transpose

You're seeing just the function apply_transpose, go back to Graphmath.Mat33 module for more information.
Link to this function

apply_transpose(a, v)

Specs

apply_transpose(mat33(), vec3()) :: vec3()

apply_transpose( a, v ) transforms a vec3 by a a transposed mat33.

a is the mat33 to transform by.

v is the vec3 to be transformed.

This returns a vec3 representing A<sup>T</sup>v.

This is the "full" application of a matrix, and uses all elements.