Contents of Example

Example

> isinf(-inf())
        1
> isinf(inf())
        1
> isinf(nan())
        0
> isinf(0)
        0
> isinf(1)
        0
> a = [inf(),23,65,-inf(),inf()]
 a =
 Infinity         23         65  -Infinity   Infinity  
> isinf(a)
        1          0          0          1          1

See also: Page $[*]$ finite(), Page $[*]$ inf(), Page $[*]$ isnan(), Page $[*]$ nan(),