CoreandServices.book - Ocean - Schlumberger

Basics
== (equal to)
if (idx_double_1 == idx_double_2)
// test is false
Cast other Index types to this type.
IndexDouble2 idx2 = new IndexDouble2(5.0, 7.0);
IndexDouble3 idx3_from_idx2 = (IndexDouble3)idx2;
// idx3_from_idx2 value is (5.0, 7.0, 0.0);
IndexDouble4 idx4 = new IndexDouble4(3.0, 5.0, 7.0, 9.0);
IndexDouble3 idx3_from_idx4 = (IndexDouble3)idx4;
// idx3_from_idx4 value is (3.0, 5.0, 7.0);
Cast double array to this type.
double[ ] arr = new double[ ] { 3.0, 5.0, 7.0 };
IndexDouble3 idx3_from_arr = (IndexDouble3)arr;
// idx3_from_arr value is (3.0, 5.0, 7.0);
Index types support the following methods:
Clone – This method makes an exact copy, equivalent to using the copy constructor.
IndexDouble3 idx = new IndexDouble3(3.0, 5.0, 7.0);
IndexDouble3 idx2 = idx.clone() as IndexDouble3;
// idx2 value is (3.0, 5.0, 7.0). Equivalent to copy ctor
Dot – This method multiplies Index properties (I * I, J * J, ...) and sums the results.
IndexDouble3 idx_1 = new IndexDouble3(3.0, 5.0, 7.0);
IndexDouble3 idx_2 = new IndexDouble3(9.0, 13.0, 17.0);
double dot = IndexDouble3.Dot(idx_1, idx_2) ;
// dot = 3*9 + 5*13 + 7*17 = 211.00
Equals – This method completes an equality check.
IndexDouble3 idx_1 = new IndexDouble3(3.0, 5.0, 7.0);
IndexDouble3 idx_2 = new IndexDouble3(9.0, 13.0, 17.0);
if (idx_1.Equals(idx_2))
// result is false
Schlumberger Private
Ocean Services 4-101