Index: Source/WTF/wtf/SaturatedArithmetic.h |
diff --git a/Source/WTF/wtf/SaturatedArithmetic.h b/Source/WTF/wtf/SaturatedArithmetic.h |
deleted file mode 100644 |
index cf9e8e17efb57db26b78bbf4b1ae03b988b4b3c6..0000000000000000000000000000000000000000 |
--- a/Source/WTF/wtf/SaturatedArithmetic.h |
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@@ -1,66 +0,0 @@ |
-/* |
- * Copyright (c) 2012, Google Inc. All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions are |
- * met: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * Redistributions in binary form must reproduce the above |
- * copyright notice, this list of conditions and the following disclaimer |
- * in the documentation and/or other materials provided with the |
- * distribution. |
- * * Neither the name of Google Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived from |
- * this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
- |
-#ifndef SaturatedArithmetic_h |
-#define SaturatedArithmetic_h |
- |
-#include <limits> |
-#include <stdint.h> |
-#include <stdlib.h> |
- |
-inline int32_t saturatedAddition(int32_t a, int32_t b) |
-{ |
- uint32_t ua = a; |
- uint32_t ub = b; |
- uint32_t result = ua + ub; |
- |
- // Can only overflow if the signed bit of the two values match. If the signed |
- // bit of the result and one of the values differ it did overflow. |
- if (!((ua ^ ub) >> 31) & (result ^ ua) >> 31) |
- result = std::numeric_limits<int>::max() + (ua >> 31); |
- |
- return result; |
-} |
- |
-inline int32_t saturatedSubtraction(int32_t a, int32_t b) |
-{ |
- uint32_t ua = a; |
- uint32_t ub = b; |
- uint32_t result = ua - ub; |
- |
- // Can only overflow if the signed bit of the two values do not match. If the |
- // signed bit of the result and the first value differ it did overflow. |
- if ((ua ^ ub) >> 31 & (result ^ ua) >> 31) |
- result = std::numeric_limits<int>::max() + (ua >> 31); |
- |
- return result; |
-} |
- |
-#endif // SaturatedArithmetic_h |