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Re: manipulating structures [message #53354 is a reply to message #53353] Sun, 08 April 2007 12:22 Go to previous messageGo to previous message
Foldy Lajos is currently offline  Foldy Lajos
Messages: 268
Registered: October 2001
Senior Member
On Sun, 8 Apr 2007, Kenneth P. Bowman wrote:

> The rules for IEEE arithmetic say that the result of any operation
> involving a NaN is a NaN. That is not true in the case of TOTAL. If
> you sum an array that is all NaNs, the result is zero.

You are summing an empty array, if the /NaN keyword (= discard NaNs) was
set. So, what is the sum of an empty array: 0 or Nan? :-)

regards,
lajos

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