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| 1 /* | 1 /* |
| 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 351 template <> | 351 template <> |
| 352 inline double defaultMinimumForClamp<double>() { | 352 inline double defaultMinimumForClamp<double>() { |
| 353 return -std::numeric_limits<double>::max(); | 353 return -std::numeric_limits<double>::max(); |
| 354 } | 354 } |
| 355 | 355 |
| 356 // And, finally, the actual function for people to call. | 356 // And, finally, the actual function for people to call. |
| 357 template <typename LimitType, typename ValueType> | 357 template <typename LimitType, typename ValueType> |
| 358 inline LimitType clampTo(ValueType value, | 358 inline LimitType clampTo(ValueType value, |
| 359 LimitType min = defaultMinimumForClamp<LimitType>(), | 359 LimitType min = defaultMinimumForClamp<LimitType>(), |
| 360 LimitType max = defaultMaximumForClamp<LimitType>()) { | 360 LimitType max = defaultMaximumForClamp<LimitType>()) { |
| 361 ASSERT(!std::isnan(static_cast<double>(value))); | 361 DCHECK(!std::isnan(static_cast<double>(value))); |
| 362 ASSERT(min <= max); // This also ensures |min| and |max| aren't NaN. | 362 DCHECK_LE(min, max); // This also ensures |min| and |max| aren't NaN. |
| 363 return ClampToHelper<LimitType, ValueType>::clampTo(value, min, max); | 363 return ClampToHelper<LimitType, ValueType>::clampTo(value, min, max); |
| 364 } | 364 } |
| 365 | 365 |
| 366 inline bool isWithinIntRange(float x) { | 366 inline bool isWithinIntRange(float x) { |
| 367 return x > static_cast<float>(std::numeric_limits<int>::min()) && | 367 return x > static_cast<float>(std::numeric_limits<int>::min()) && |
| 368 x < static_cast<float>(std::numeric_limits<int>::max()); | 368 x < static_cast<float>(std::numeric_limits<int>::max()); |
| 369 } | 369 } |
| 370 | 370 |
| 371 static size_t greatestCommonDivisor(size_t a, size_t b) { | 371 static size_t greatestCommonDivisor(size_t a, size_t b) { |
| 372 return b ? greatestCommonDivisor(b, a % b) : a; | 372 return b ? greatestCommonDivisor(b, a % b) : a; |
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| 426 if (i >> 2) | 426 if (i >> 2) |
| 427 log2 += 2, i >>= 2; | 427 log2 += 2, i >>= 2; |
| 428 if (i >> 1) | 428 if (i >> 1) |
| 429 log2 += 1; | 429 log2 += 1; |
| 430 return log2; | 430 return log2; |
| 431 } | 431 } |
| 432 | 432 |
| 433 } // namespace WTF | 433 } // namespace WTF |
| 434 | 434 |
| 435 #endif // #ifndef WTF_MathExtras_h | 435 #endif // #ifndef WTF_MathExtras_h |
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