Custom Resolution Utility (CRU)

[Nintendo Maniac 64]

Just a simple question - how is the value for the exact refresh rate rounded in CRU?

Basically I noticed that sometimes mpv "Display FPS" will exactly match that CRU described including the three decimal places (e.g. both saying 72.000) but, for other refresh rates/resolutions, CRU will list as being exactly 0.001 Hz less, e.g. CRU stating that a refresh rate is 75.000Hz but mpv listing it as 75.001

I don't suppose this means that CRU always just rounds down, e.g. 75.00064Hz is listed as 75.000 in CRU?

(it may be worth mentioning that I'm actually using the Linux version of mpv; I've discovered that CRU running through WINE is quite useful on Linux for calculating much more exact refresh rates since the normal "cvt" command on Linux generates modes that are not all that exact, e.g. 74.857 rather than the 75.00Hz that it the cvt command claims - for this reason I don't suppose there's a way to have CRU directly output an xorg/xrandr-compatible modeline rather than what I've been doing of manually adding the corresponding CRU values together to essentially manually create a custom modeline?)