Henrik Gramner authored Sep 01, 2020 and Henrik Gramner committed Sep 01, 2020

The previous floating-point implementation produced results that were
sometimes slightly off due to rounding errors.

For example, a frame size of 432x240 with a render size of 176x240
previously resulted in a PAR of 98:240 instead of the correct 11:27.

Also reduce fractions to produce more readable numbers.