in profiling, most time is being spent in the `reflect` method:

f64:
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect::h7899977a4ba0b1d3
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect::hc337c3cb6e3b4061
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect_rows::h43d0f6838d0c2833

f32:
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect::h0e8ec322f198f847
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect::h9928bdd5e72743ea
  sycamore_trial-3d0aca3efee8b5fd.wasm.nalgebra::geometry::reflection::Reflection<T,D,S>::reflect_rows::h49f571fd8fc9b0f2

in one test, we spent 4000 ms in "WASM closure", but the enveloping "VoidFunction" takes 1300 ms longer. in another test, though, there's no overhang; the 7000 ms we spent in `rand_eigval_series` accounts for basically the entire load time, and matches the clock timing