| Index: Source/WTF/wtf/SaturatedArithmetic.h
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| diff --git a/Source/WTF/wtf/SaturatedArithmetic.h b/Source/WTF/wtf/SaturatedArithmetic.h
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| deleted file mode 100644
|
| index cf9e8e17efb57db26b78bbf4b1ae03b988b4b3c6..0000000000000000000000000000000000000000
|
| --- a/Source/WTF/wtf/SaturatedArithmetic.h
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| +++ /dev/null
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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
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| -
|
| -#include <limits>
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| -#include <stdint.h>
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| -#include <stdlib.h>
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| -
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| -inline int32_t saturatedAddition(int32_t a, int32_t b)
|
| -{
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| - uint32_t ua = a;
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| - uint32_t ub = b;
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| - 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);
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| -
|
| - return result;
|
| -}
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| -
|
| -inline int32_t saturatedSubtraction(int32_t a, int32_t b)
|
| -{
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| - uint32_t ua = a;
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| - uint32_t ub = b;
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| - uint32_t result = ua - ub;
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| -
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| - // Can only overflow if the signed bit of the two values do not match. If the
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| - // signed bit of the result and the first value differ it did overflow.
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| - if ((ua ^ ub) >> 31 & (result ^ ua) >> 31)
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| - result = std::numeric_limits<int>::max() + (ua >> 31);
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| -
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| - return result;
|
| -}
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| -
|
| -#endif // SaturatedArithmetic_h
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|
|