Re: [Haskell-cafe] Sinus in Haskell

Brent Yorgey wrote:

More generally, this is due to the fact that floating-point numbers can only have finite precision, so a little bit of rounding error is inevitable when dealing with irrational numbers like pi. This problem is in no way specific to Haskell.

But some systems always display to a slightly lower precision than they calculate. Some pocket calculators work like this, and I suspect some programming languages might. You can conceal the first few instances of rounding errors this way (until they get a bit bigger and punch through your reduced precision). Jules