Function InitializeRange

tests/cpp/common/test_span.h:11–16

template <typename Iter>
XGBOOST_DEVICE void InitializeRange(Iter _begin, Iter _end) {
  float j = 0;
  for (Iter i = _begin; i != _end; ++i, ++j) {
    *i = j;
  }
}

namespace xgboost {
namespace common {