|
@@ -0,0 +1,76 @@
|
|
|
|
|
+//
|
|
|
|
|
+// Copyright (c) 2008-2019 the Urho3D project.
|
|
|
|
|
+//
|
|
|
|
|
+// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
+// of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
+// in the Software without restriction, including without limitation the rights
|
|
|
|
|
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
+// copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
+// furnished to do so, subject to the following conditions:
|
|
|
|
|
+//
|
|
|
|
|
+// The above copyright notice and this permission notice shall be included in
|
|
|
|
|
+// all copies or substantial portions of the Software.
|
|
|
|
|
+//
|
|
|
|
|
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
|
|
+// THE SOFTWARE.
|
|
|
|
|
+//
|
|
|
|
|
+
|
|
|
|
|
+#pragma once
|
|
|
|
|
+
|
|
|
|
|
+#include "../Urho3DConfig.h"
|
|
|
|
|
+
|
|
|
|
|
+namespace Urho3D
|
|
|
|
|
+{
|
|
|
|
|
+
|
|
|
|
|
+/// Returns an iterator pointing to the first element in the range [first, last) that is not less than value.
|
|
|
|
|
+template <class TRandomAccessIterator, class T>
|
|
|
|
|
+TRandomAccessIterator LowerBound(TRandomAccessIterator first, TRandomAccessIterator last, const T& value)
|
|
|
|
|
+{
|
|
|
|
|
+ unsigned count = last - first;
|
|
|
|
|
+
|
|
|
|
|
+ while (count > 0)
|
|
|
|
|
+ {
|
|
|
|
|
+ const unsigned step = count / 2;
|
|
|
|
|
+ const TRandomAccessIterator it = first + step;
|
|
|
|
|
+ if (*it < value)
|
|
|
|
|
+ {
|
|
|
|
|
+ first = it + 1;
|
|
|
|
|
+ count -= step + 1;
|
|
|
|
|
+ }
|
|
|
|
|
+ else
|
|
|
|
|
+ {
|
|
|
|
|
+ count = step;
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+ return first;
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+/// Returns an iterator pointing to the first element in the range [first, last) that is greater than value.
|
|
|
|
|
+template <class TRandomAccessIterator, class T>
|
|
|
|
|
+TRandomAccessIterator UpperBound(TRandomAccessIterator first, TRandomAccessIterator last, const T& value)
|
|
|
|
|
+{
|
|
|
|
|
+ unsigned count = last - first;
|
|
|
|
|
+
|
|
|
|
|
+ while (count > 0)
|
|
|
|
|
+ {
|
|
|
|
|
+ const unsigned step = count / 2;
|
|
|
|
|
+ const TRandomAccessIterator it = first + step;
|
|
|
|
|
+ if (!(value < *it))
|
|
|
|
|
+ {
|
|
|
|
|
+ first = it + 1;
|
|
|
|
|
+ count -= step + 1;
|
|
|
|
|
+ }
|
|
|
|
|
+ else
|
|
|
|
|
+ {
|
|
|
|
|
+ count = step;
|
|
|
|
|
+ };
|
|
|
|
|
+ }
|
|
|
|
|
+ return first;
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+}
|