Representation of NaN (Not a Number).
Source position: syshelph.inc line 691
| public const TSingleHelper.NaN: Single = 0.0 / 0.0; | 
NaN is the Representation of NaN (Not a Number) for a single-sized floating point type.
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 | Largest possible value for the Single floating point type. | |
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 | Smallest (negative) possible value for the Single floating point type. | |
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 | Precision for this floating point type. | |
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 | Positive infinity as represented by a single floating point type. | |
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 | Negative infinity as represented by a single floating point type. |