function empty( length ) {
	var nbytes;
	var offset;
	var dtype;
	var ctor;
	var buf;
	var out;
	var nb;

	if ( !isNonNegativeInteger( length ) ) {
		throw new TypeError( format( 'invalid argument. First argument must be a nonnegative integer. Value: `%s`.', length ) );
	}
	if ( arguments.length > 1 ) {
		dtype = arguments[ 1 ];
	} else {
		dtype = DEFAULT_DTYPE;
	}
	if ( dtype === 'generic' ) {
		return zeros( length );
	}
	nbytes = bytesPerElement( dtype );
	if ( nbytes === null ) {
		throw new TypeError( format( 'invalid argument. Second argument must be a supported data type. Value: `%s`.', dtype ) );
	}
	// Resolve typed array constructor:
	ctor = ctors( dtype );

	// Compute the number of bytes to allocate:
	nb = nbytes * length;
	if ( dtype === 'complex128' ) {
		nb += 8; // Note: need to allocate additional bytes to ensure alignment
	}
	// Allocate binary buffer:
	buf = allocUnsafe( nb );

	// Resolve the byte offset:
	offset = buf.byteOffset;
	if ( dtype === 'complex128' ) {
		if ( !isNonNegativeInteger( offset/nbytes ) ) {
			offset += 8; // Note: ensure alignment
		}
	}
	// Reinterpret the binary buffer:
	out = new ctor( buf.buffer, offset, length );

	return out;
}
Creates an uninitialized array having a specified length.

@param {NonNegativeInteger} length - array length
@param {string} [dtype="float64"] - data type
@throws {TypeError} first argument must be a nonnegative integer
@throws {TypeError} second argument must be a recognized data type
@returns {(TypedArray|Array|ComplexArray)} array or typed array

@example
var arr = empty( 2 );
// returns <Float64Array>

@example
var arr = empty( 2, 'float32' );
// returns <Float32Array>