1 files changed, 13 insertions, 0 deletions
diff --git a/src/corelib/tools/qcontainertools_impl.h b/src/corelib/tools/qcontainertools_impl.h
index f4dfecffce..570eeba891 100644
--- a/src/corelib/tools/qcontainertools_impl.h
+++ b/src/corelib/tools/qcontainertools_impl.h
@@ -59,6 +59,19 @@ QT_BEGIN_NAMESPACE
 namespace QtPrivate
 {
 
+/*!
+  \internal
+
+  Returns whether \a p is within a range [b, e). In simplest form equivalent to:
+  b <= p < e.
+*/
+template<typename T, typename Cmp = std::less<>>
+static constexpr bool q_points_into_range(const T *p, const T *b, const T *e,
+                                          Cmp less = {}) noexcept
+{
+    return !less(p, b) && less(p, e);
+}
+
 template <typename T, typename N>
 void q_uninitialized_relocate_n(T* first, N n, T* out)
 {