ternary4d

Apply a ternary callback to elements in three four-dimensional nested input arrays and assign results to elements in a four-dimensional nested output array.

Usage

var ternary4d = require( '@stdlib/array/base/ternary4d' );

ternary4d( arrays, shape, fcn )

Applies a ternary callback to elements in three four-dimensional nested input arrays and assigns results to elements in a four-dimensional nested output array.

var add = require( '@stdlib/math/base/ops/add3' );
var zeros4d = require( '@stdlib/array/base/zeros4d' );

var x = [ [ [ [ 1.0, 2.0 ], [ 3.0, 4.0 ] ] ] ];
var out = zeros4d( [ 1, 1, 2, 2 ] );

var shape = [ 1, 1, 2, 2 ];

ternary4d( [ x, x, x, out ], shape, add );
// out => [ [ [ [ 3.0, 6.0 ], [ 9.0, 12.0 ] ] ] ]

The function accepts the following arguments:

arrays: array-like object containing three input nested arrays and one output nested array.
shape: array shape.
fcn: ternary function to apply.

Notes

The function assumes that the input and output arrays have the same shape.

Examples

var discreteUniform = require( '@stdlib/random/base/discrete-uniform' ).factory;
var filled4dBy = require( '@stdlib/array/base/filled4d-by' );
var zeros4d = require( '@stdlib/array/base/zeros4d' );
var add = require( '@stdlib/math/base/ops/add3' );
var ternary4d = require( '@stdlib/array/base/ternary4d' );

var shape = [ 1, 3, 3, 3 ];

var x = filled4dBy( shape, discreteUniform( -100, 100 ) );
console.log( x );

var y = filled4dBy( shape, discreteUniform( -100, 100 ) );
console.log( y );

var z = filled4dBy( shape, discreteUniform( -100, 100 ) );
console.log( z );

var out = zeros4d( shape );
console.log( out );

ternary4d( [ x, y, z, out ], shape, add );
console.log( out );