Value of not-a-number : nan « Number « Ruby

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Ruby » Number » nan 




Value of not-a-number


nan = 0.0/0.0;     # zero divided by zero is not-a-number
nan < 0            false: it is not less than zero
nan > 0            false: it is not greater than zero
nan == 0           false: it is not equal to zero
nan == nan         # false: it is not even equal to itself!
nan.equal?(nan)    this is true, of course

 
Related examples in the same category
1.Is it not a number
2.Inspect a not-a-number
3.Is it an integer
4.If it is an integer
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