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Re: Calculators, cosines, and floating point computation
From: Tony Oz
Date: 2019 Jun 4, 03:55 -0700
From: Tony Oz
Date: 2019 Jun 4, 03:55 -0700
Dear Brad, may be I mis-read your reply, but I feel some degree of irritation on your side.
I'm so interested in this Cosine calculator issue because my TI-83+ was constantly throwing an exception for several days in March while doing plain arc-cosine of no-fancy Law of Cosines HC computation at LAN. Investigation has shown that the input value to the arccos() was equal to 1,0000000000001. I had to guard that function with an "If X<=1 ..." check.
Warm regards,
Tony
60°N 30°E
