{{alias}}( x )
    Returns a JSON representation of a number.

    Parameters
    ----------
    x: number
        Input value to serialize.

    Returns
    -------
    out: Object
        JSON representation if x is NaN or Infinity.

    out.type: string
        Value type. The assigned value is always "float64".

    out.value: string
        Value type. The assigned value can be "NaN", "+Infinity", "-Infinity".

    out: number
        In all other cases, the input value is returned.

    Examples
    --------
    > var json = {{alias}}( NaN )
    { 'type': 'float64', 'value': 'NaN' }
    > json = {{alias}}( Infinity )
    { 'type': 'float64', 'value': '+Infinity' }
    > json = {{alias}}( -Infinity )
    { 'type': 'float64', 'value': '-Infinity' }
    > json = {{alias}}( 5.0 )
    5.0

    See Also
    --------