Comment by spockz
4 years ago
But why is it then 3.2f instead of 3.1? Seeing as 3.14 gets rounded to 3.1. Or is that part of the joke and the reason for why the value nee changing?
4 years ago
But why is it then 3.2f instead of 3.1? Seeing as 3.14 gets rounded to 3.1. Or is that part of the joke and the reason for why the value nee changing?
Regardless of the actual answer, it can make sense to round it up depending on the use case e.g. if you’re calculating the tolerances for a shaft onto which you place a disk, computing the disk diameter (and thus volume, and weight) to be larger than actual provides a safety margin which rounding down would not. Any additional safety margin added afterwards might not be sufficient in all round-down cases.
Sorry, I should be more clear. This is a line from the header linked by the parent comment that reminded me of this story.