function toWords( x ) {
	return fcn( x, [ 0>>>0, 0>>>0 ], 1, 0 );
}
Splits a double-precision floating-point number into a higher order word (unsigned 32-bit integer) and a lower order word (unsigned 32-bit integer).

@param {number} x - input value
@returns {Array<number>} output array

@example
var w = toWords( 3.14e201 );
// returns [ 1774486211, 2479577218 ]