Identifying Numeric Classes

You can check the data type of a variable x using any of these commands.

Command	Operation
`whos x`	Display the data type of `x`.
`xType = class(x);`	Assign the data type of `x` to a variable.
`isnumeric(x)`	Determine if `x` is a numeric type.
`isa(x, 'integer') isa(x, 'uint64') isa(x, 'float') isa(x, 'double') isa(x, 'single')`	Determine if `x` is the specified numeric type. (Examples for any integer, unsigned 64-bit integer, any floating point, double precision, and single precision are shown here).
`isreal(x)`	Determine if `x` is real or complex.
`isnan(x)`	Determine if `x` is Not a Number (`NaN`).
`isinf(x)`	Determine if `x` is infinite.
`isfinite(x)`	Determine if `x` is finite.

MATLAB Documentation