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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include <stdarg.h> | 28 #include <stdarg.h> |
29 | 29 |
30 #include "v8.h" | 30 #include "v8.h" |
31 | 31 |
32 #include "platform.h" | 32 #include "platform.h" |
33 | 33 |
34 #include "sys/stat.h" | 34 #include "sys/stat.h" |
35 | 35 |
36 namespace v8 { namespace internal { | 36 namespace v8 { |
| 37 namespace internal { |
37 | 38 |
38 | 39 |
39 // Implementation is from "Hacker's Delight" by Henry S. Warren, Jr., | 40 // Implementation is from "Hacker's Delight" by Henry S. Warren, Jr., |
40 // figure 3-3, page 48, where the function is called clp2. | 41 // figure 3-3, page 48, where the function is called clp2. |
41 uint32_t RoundUpToPowerOf2(uint32_t x) { | 42 uint32_t RoundUpToPowerOf2(uint32_t x) { |
42 x = x - 1; | 43 x = x - 1; |
43 x = x | (x >> 1); | 44 x = x | (x >> 1); |
44 x = x | (x >> 2); | 45 x = x | (x >> 2); |
45 x = x | (x >> 4); | 46 x = x | (x >> 4); |
46 x = x | (x >> 8); | 47 x = x | (x >> 8); |
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302 buffer_[position_] = '\0'; | 303 buffer_[position_] = '\0'; |
303 // Make sure nobody managed to add a 0-character to the | 304 // Make sure nobody managed to add a 0-character to the |
304 // buffer while building the string. | 305 // buffer while building the string. |
305 ASSERT(strlen(buffer_.start()) == static_cast<size_t>(position_)); | 306 ASSERT(strlen(buffer_.start()) == static_cast<size_t>(position_)); |
306 position_ = -1; | 307 position_ = -1; |
307 ASSERT(is_finalized()); | 308 ASSERT(is_finalized()); |
308 return buffer_.start(); | 309 return buffer_.start(); |
309 } | 310 } |
310 | 311 |
311 } } // namespace v8::internal | 312 } } // namespace v8::internal |
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