What's scary about this is that the response "not a number" is often a response directly from the hardware.
If, like me, you are lucky enough to have on hand an external drive with relatively virgin copies of various Apple operating systems, you could boot one of them and see if you get the same result. It's possible that you will get this result no matter which operating system you boot on that hardware, whereas if you take the same drive and boot someone else's Mac with it, you may get proper results. That would pretty definitively show that the problem is your chip. > On Jan 8, 2020, at 12:49 PM, Dinse, Gregg (NIH/NIEHS) [C] > <di...@niehs.nih.gov> wrote: > > > Hi, > > I am running the latest version of Mojave (10.14.6) on a fairly new iMac. > Using the Scientific view in the Calculator app, I tried to evaluate exp(-1) > and it said "Not a number". I tried several other negative values and none > worked, even though they certainly should. When I tried taking 10 to the -1 > power, I got the correct result (0.1), but for some reason it has a problem > raising "e" (the base for natural logarithms) to a negative power. > > I tried quitting the app, but that did not help. I tried rebooting my mac, > but that did not help. I contacted our support group and they said the only > thing they could do is to reinstall the operating system, which seems like a > drastic step. And exp(-1) worked just fine on the support person's mac. > > Is there anything else that someone can suggest, short of reinstalling the > OS? The support person said that we could not simply replace the Calculator > app because it was part of the OS. Any thoughts? > > Thanks, > > Gregg > > _______________________________________________ > MacOSX-talk mailing list > MacOSX-talk@omnigroup.com > https://www.omnigroup.com/mailman/listinfo/macosx-talk
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