I have a question about scrolling horizontally in mousewheel.js.

Create a horizontal scrolling web site and do the scrolling process
http://www.webopixel.net/javascript/421.html
I made it by referring to the above site (copy the code).

If the speed is set to 50, the mouse wheel scrolls with the right amount of scrolling, but the amount of scrolling on the trackpad (macbook) is too large and looks like a wild horse.

In the demo on the above site, the amount of scrolling is appropriate for both mouse and trackpad scrolling, but if you make it yourself, the amount of scrolling will be different.

Is there a way to determine whether the scroll method is a mouse or a trackpad?