public void Abs()
{
// arrange
var bufferSize = 10;
var targetData = new int[bufferSize];
var srcData = Enumerable.Range(-1 * bufferSize / 2, bufferSize).ToArray();
var target = new DataAndLayout <int>(targetData, new FastAccess(new Layout(new int[] { bufferSize }, 0, new int[] { 1 })));
var src = new DataAndLayout <int>(srcData, new FastAccess(new Layout(new int[] { bufferSize }, 0, new int[] { 1 })));
// action
ScalarOps.Abs(target, src);
// assert
var allPositive = target.Data.All(v => v >= 0);
Assert.IsTrue(allPositive);
}