Returns 1 if input parameter is a logical series.
ISLOGICAL(val)
val |
- |
A series, scalar or string value to test. |
The scalar 1 if the input is a logical series, else 0.
islogical(3i)
returns 0
islogical("string")
returns 0
islogical(gnorm(100, 1) > 0.5)
returns 1
islogical(logical({1, 0, 1}))
returns 1
If the input series is empty, islogical returns 0.