How are fractions rounded in golf?

In golf calculations, fractions are always rounded using the rule that “.5 rounds up.”
That means:

  •  1.500     —> 2
  •  1.4999   —> 1
  •  1.250     —> 1.3
  •  1.2499   —> 1.2

However, it’s important to remember that “up” means toward the higher value, not away from zero.
For negative numbers, this means:

  •  -1.250   —> -1.2
  •  -1.2501 —> -1.3

This applies to the calculations of the Course Handicap, Playing Handicap, and Score Differential.