function gsortins( N, order, x, strideX ) {
	return ndarray( N, order, x, strideX, stride2offset( N, strideX ) );
}
Sorts a strided array using insertion sort.

@param {PositiveInteger} N - number of indexed elements
@param {number} order - sort order
@param {NumericArray} x - input array
@param {integer} strideX - stride length
@returns {NumericArray} input array

@example
var x = [ 1.0, -2.0, 3.0, -4.0 ];

gsortins( x.length, 1.0, x, 1 );
// x => [ -4.0, -2.0, 1.0, 3.0 ]