Index: ui/gfx/safe_floor_ceil.cc |
diff --git a/ui/gfx/safe_floor_ceil.cc b/ui/gfx/safe_floor_ceil.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3932e482f60030a4002f771a8ea0e48e7adb6cef |
--- /dev/null |
+++ b/ui/gfx/safe_floor_ceil.cc |
@@ -0,0 +1,29 @@ |
+// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include <cmath> |
+#include <limits> |
+ |
+namespace gfx { |
+ |
+int ClampToInt(float value) { |
sky
2012/09/27 20:33:55
Do we really need all this? Are we really passing
|
+ if (value != value) |
+ return 0; // no int NaN. |
+ if (value > std::numeric_limits<int>::max()) |
+ return std::numeric_limits<int>::max(); |
+ if (value < std::numeric_limits<int>::min()) |
+ return std::numeric_limits<int>::max(); |
+ return static_cast<int>(value); |
+} |
+ |
+int ToFlooredInt(float value) { |
+ return ClampToInt(std::floor(value)); |
+} |
+ |
+int ToCeiledInt(float value) { |
+ return ClampToInt(std::ceil(value)); |
+} |
+ |
+} // namespace gfx |
+ |