isInfinite -- whether a number is infinite

Synopsis

• Usage:

  isInfinite x

• Inputs:
  • x, a number
• Outputs:
  • a Boolean value, whether x is an infinite number

Description

i1 : isInfinite 3.

o1 = false

i2 : inf = 1/0.

o2 = infinity

o2 : RR (of precision 53)

i3 : isInfinite inf

o3 = true

i4 : nan = inf - inf

o4 = NotANumber

o4 : RR (of precision 53)

i5 : isInfinite nan

o5 = false

See also

• isFinite -- whether a number is finite
• isANumber -- whether a number is not not-a-number