{{alias}}( arrays, fcn )
    Applies a ternary callback to elements in input ndarrays and assign results
    to elements in an output ndarray.

    Each provided "ndarray" should be an object with the following properties:

    - dtype: data type.
    - data: data buffer.
    - shape: dimensions.
    - strides: stride lengths.
    - offset: index offset.
    - order: specifies whether an ndarray is row-major (C-style) or column-major
    (Fortran-style).

    Parameters
    ----------
    arrays: ArrayLikeObject<ndarray>
        Array-like object containing three input ndarrays and one output
        ndarray.

    fcn: Function
        Ternary callback.

    Examples
    --------
    // Define ndarray data and meta data...
    > var xbuf = new {{alias:@stdlib/array/float64}}( [ 1.0, 2.0, 3.0, 4.0 ] );
    > var ybuf = new {{alias:@stdlib/array/float64}}( [ 5.0, 6.0, 7.0, 8.0 ] );
    > var zbuf = new {{alias:@stdlib/array/float64}}( [ 0.5, 0.5, 0.5, 0.5 ] );
    > var wbuf = new {{alias:@stdlib/array/float64}}( 4 );
    > var dtype = 'float64';
    > var shape = [ 2, 2 ];
    > var sx = [ 2, 1 ];
    > var sy = [ 2, 1 ];
    > var sz = [ 2, 1 ];
    > var sw = [ 2, 1 ];
    > var ox = 0;
    > var oy = 0;
    > var oz = 0;
    > var ow = 0;
    > var order = 'row-major';

    // Using ndarrays...
    > var x = {{alias:@stdlib/ndarray/ctor}}( dtype, xbuf, shape, sx, ox, order );
    > var y = {{alias:@stdlib/ndarray/ctor}}( dtype, ybuf, shape, sy, oy, order );
    > var z = {{alias:@stdlib/ndarray/ctor}}( dtype, zbuf, shape, sz, oz, order );
    > var w = {{alias:@stdlib/ndarray/ctor}}( dtype, wbuf, shape, sw, ow, order );
    > {{alias}}( [ x, y, z, w ], {{alias:@stdlib/number/float64/base/add3}} );
    > {{alias:@stdlib/ndarray/data-buffer}}( w )
    <Float64Array>[ 6.5, 8.5, 10.5, 12.5 ]

    // Using minimal ndarray-like objects...
    > x = {
    ...     'dtype': dtype,
    ...     'data': xbuf,
    ...     'shape': shape,
    ...     'strides': sx,
    ...     'offset': ox,
    ...     'order': order
    ... };
    > y = {
    ...     'dtype': dtype,
    ...     'data': ybuf,
    ...     'shape': shape,
    ...     'strides': sy,
    ...     'offset': oy,
    ...     'order': order
    ... };
    > z = {
    ...     'dtype': dtype,
    ...     'data': zbuf,
    ...     'shape': shape,
    ...     'strides': sz,
    ...     'offset': oz,
    ...     'order': order
    ... };
    > w = {
    ...     'dtype': dtype,
    ...     'data': wbuf,
    ...     'shape': shape,
    ...     'strides': sw,
    ...     'offset': ow,
    ...     'order': order
    ... };
    > {{alias}}( [ x, y, w, z ], {{alias:@stdlib/number/float64/base/add3}} );
    > {{alias:@stdlib/ndarray/data-buffer}}( w )
    <Float64Array>[ 6.5, 8.5, 10.5, 12.5 ]

    See Also
    --------