function toStrided( arr ) {
	var out;
	var z;
	var i;

	out = [];
	for ( i = 0; i < arr.length; i++ ) {
		z = arr[ i ];
		if ( isComplex64( z ) ) {
			out.push( realf( z ), imagf( z ) );
		} else {
			out.push( real( z ), imag( z ) );
		}
	}
	return out;
}
Converts an array of complex number objects to a interleaved strided array.

@private
@param {Array<ComplexLike>} arr - input array
@returns {Array<number>} output array