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-rw-r--r--boost/compute/algorithm/unique_copy.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/boost/compute/algorithm/unique_copy.hpp b/boost/compute/algorithm/unique_copy.hpp
index 2ce60a9359..d5fffd4ff9 100644
--- a/boost/compute/algorithm/unique_copy.hpp
+++ b/boost/compute/algorithm/unique_copy.hpp
@@ -127,6 +127,8 @@ inline OutputIterator unique_copy(InputIterator first,
///
/// \return \c OutputIterator to the end of the result range
///
+/// Space complexity: \Omega(4n)
+///
/// \see unique()
template<class InputIterator, class OutputIterator, class BinaryPredicate>
inline OutputIterator unique_copy(InputIterator first,