code: public SDVariable isNonDecreasing(String name, SDVariable x) {
          validateNumerical("isNonDecreasing", x);
          SDVariable result = f().isNonDecreasing(x);
          return updateVariableNameAndReference(result, name);
      }
docs: Is the array non decreasing?<br>
  An array is non-decreasing if for every valid i, x[i] <= x[i+1]. For Rank 2+ arrays, values are compared
  in 'c' (row major) order
  
  @param name Output name
  @param x    Input variable
  @return Scalar variable with value 1 if non-decreasing, or 0 otherwise