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NaN Values
The term NaN, which stands for "not a number," means a symbolic entity that represents a value not otherwise available in floating-point format.
There are two kinds of NaNs.
- Quiet
- Represent unknown or uninitialized values.
- Signaling
- Represent symbolic values and values that are too big or too precise for the format. Signaling NaNs raise an invalid operation exception whenever an operation is attempted on them.