Testing NaN existence in array

[David Kremer]

Hello, 

I would have a simple way to detect if an array contains NaN. I tried
isnan(a),  but that doesn't work if only one elem isnan.

The purpose is to test it in a boolean expression, like this :

if has_NaN
     break ;
end ;

But that works only with scalar value.

Please, do you know a mean to do this ?

Thank you very much.

David Kremer

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