That is not what the discussion is about. The e-mail forwarded by Devon McCormick says that if sin squared plus cos squared is "not quite equal to 1", then that is evidence that "the floating point unit ... was malfunctioning". The example I gave demonstrated that you can have perfect values for sin and cos and yet the sum of squares is correctly not equal to 1.
----- Original Message ----- From: Tom Arneson <[EMAIL PROTECTED]> Date: Sunday, December 17, 2006 6:31 pm Subject: Re: [Jgeneral] exp(y). sin(y) and accuracy. > 1-(cos +&*: sin) u > 1.11022e_16 > > Looks like its very close to 1 to me. If you need better than 15 place > precision use another tool. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
