IsInfinity()

Syntax

Result.f = IsInfinity(Value.f)

Returns nonzero if the given value represents positive or negative infinity.

Checking for the infinity values should not be done using normal comparison, because it depends on the hardware implementation wether infinity is considered equal to itself or not. The value of positive infinity can be generated with the Infinity() function.

Example:

  Result = IsInfinity(Infinity())  ; infinity
  Result = IsInfinity(Log(0))      ; -infinity
  Result = IsInfinity(1234.5)      ; a finite number
  Result = IsInfinity(NaN())       ; NaN is not the same as infinity

Supported OS

All