LOGICAL SPL Directory

 

The Logical directory contains functions useful in testing values for finite, infinite, empty, nan, complex, real and string types. The following functions are included:

 

FINITE

Returns 1 where series is finite.

ISCOMPLEX

Returns 1 if input is complex.

ISEMPTY

Returns 1 if series is empty.

ISFINITE

Returns 1 where series is finite

ISFUNC

Returns 1 if input is a loaded SPL function name

ISINF

Returns 1 where input is infinite.

ISNAN

Returns 1 where input is NA.

ISNUMERIC

Returns 1 is input is numeric

ISREAL

Returns 1 if input is real

ISSCALAR

Returns 1 if input is a scalar

ISSTRING

Returns 1 if input is a string

ISUNIT

Returns 1 if input is a units

ISWINDOW

Returns 1 if input is a window

ISWINEMPTY

Returns 1 if window does not contain a series

ISXY

Returns 1 if input is an XY series