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c# how to check if a number is infinity

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c#

i have a little problem. I have two double variables which each has the value 1*10^250. Now if I multiplicate these two values I get a result which is also a double variable. The problem is that the result of the multiplication gives me the value infinity but I want to prevent this and give an error message. So it would be nice if someone know how to identify if a number is infinity.

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henshiro64 Avatar asked Mar 11 '17 09:03

henshiro64


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2 Answers

How about the Double.IsInfinity(Double) method?

Double.IsInfinity(3.0 / 0)

See also

  • IsPositiveInfinity
  • IsNegativeInfinity
  • PositiveInfinity
  • NegativeInfinity
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Viezevingertjes Avatar answered Sep 21 '22 04:09

Viezevingertjes


use

double.IsInfinity(theDoubleNumber);

you can also use double.IsNegativeInfinity(), double.IsPositiveInfinity(), double.NaN(), double.MaxValue(), double.MinValue() for similar purpose

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dancer42 Avatar answered Sep 21 '22 04:09

dancer42