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Representing Negative Infinity, Positive Infinity, Indeterminate, and Indeterminate values in DataHub

What do 1.#INF, -1.#QNAN, -1.#INF  and -1.#IND mean in the Data Viewer?

There are four special floating point values that can be generated by the computer's floating point processor:

  • -1.#QNAN = Quiet Not a Number
  • -1.#INF = Negative infinity
  • 1.#INF = Positive infinity
  • -1.#IND = Indeterminate

These are generated in different ways based on the floating point operation and the operands. For example:

  • x / 0 = infinity = 1.#INF
  • -x/ 0 = negative infinity = -1.#INF
  • 0 / 0 = indeterminate = -1.#IND
  • sqrt(-1) = -1.#IND