NaN

NaN = NaN

A real representing a value that is not a number.

It can be produced by an invalid arithmetic operation.

In particular, NaN can be obtained:

• By dividing 0 by 0, or Infinity by Infinity (any other number divided by 0 gives ±Infinity, and a finite number divided by Infinity gives 0)
• By multiplying 0.0 by Infinity

In LS1, a division by zero gives neither NaN nor Infinity: it returns null and raises the error "Division by zero".

Examples

NaN 0.0 / 0.0 = NaN