| OLD | NEW |
| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 | 9 |
| 10 #ifndef SkMath_DEFINED | 10 #ifndef SkMath_DEFINED |
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| 143 */ | 143 */ |
| 144 static inline int SkNextLog2(uint32_t value) { | 144 static inline int SkNextLog2(uint32_t value) { |
| 145 SkASSERT(value != 0); | 145 SkASSERT(value != 0); |
| 146 return 32 - SkCLZ(value - 1); | 146 return 32 - SkCLZ(value - 1); |
| 147 } | 147 } |
| 148 | 148 |
| 149 /** | 149 /** |
| 150 * Returns true if value is a power of 2. Does not explicitly check for | 150 * Returns true if value is a power of 2. Does not explicitly check for |
| 151 * value <= 0. | 151 * value <= 0. |
| 152 */ | 152 */ |
| 153 static inline bool SkIsPow2(int value) { | 153 template <typename T> inline bool SkIsPow2(T value) { |
| 154 return (value & (value - 1)) == 0; | 154 return (value & (value - 1)) == 0; |
| 155 } | 155 } |
| 156 | 156 |
| 157 /////////////////////////////////////////////////////////////////////////////// | 157 /////////////////////////////////////////////////////////////////////////////// |
| 158 | 158 |
| 159 /** | 159 /** |
| 160 * SkMulS16(a, b) multiplies a * b, but requires that a and b are both int16_t. | 160 * SkMulS16(a, b) multiplies a * b, but requires that a and b are both int16_t. |
| 161 * With this requirement, we can generate faster instructions on some | 161 * With this requirement, we can generate faster instructions on some |
| 162 * architectures. | 162 * architectures. |
| 163 */ | 163 */ |
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| 223 *div = static_cast<Out>(d); | 223 *div = static_cast<Out>(d); |
| 224 *mod = static_cast<Out>(numer-d*denom); | 224 *mod = static_cast<Out>(numer-d*denom); |
| 225 #else | 225 #else |
| 226 // On x86 this will just be a single idiv. | 226 // On x86 this will just be a single idiv. |
| 227 *div = static_cast<Out>(numer/denom); | 227 *div = static_cast<Out>(numer/denom); |
| 228 *mod = static_cast<Out>(numer%denom); | 228 *mod = static_cast<Out>(numer%denom); |
| 229 #endif | 229 #endif |
| 230 } | 230 } |
| 231 | 231 |
| 232 #endif | 232 #endif |
| OLD | NEW |