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| 1 // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef V8_TRIG_TABLE_H_ |
| 6 #define V8_TRIG_TABLE_H_ |
| 7 |
| 8 |
| 9 namespace v8 { |
| 10 namespace internal { |
| 11 |
| 12 class TrigonometricLookupTable : public AllStatic { |
| 13 public: |
| 14 // Casting away const-ness to use as argument for typed array constructor. |
| 15 static void* sin_table() { |
| 16 return const_cast<double*>(&kSinTable[0]); |
| 17 } |
| 18 |
| 19 static void* cos_x_interval_table() { |
| 20 return const_cast<double*>(&kCosXIntervalTable[0]); |
| 21 } |
| 22 |
| 23 static double samples_over_pi_half() { return kSamplesOverPiHalf; } |
| 24 static int samples() { return kSamples; } |
| 25 static int table_num_bytes() { return kTableSize * sizeof(*kSinTable); } |
| 26 static int table_size() { return kTableSize; } |
| 27 |
| 28 private: |
| 29 static const double kSinTable[]; |
| 30 static const double kCosXIntervalTable[]; |
| 31 static const int kSamples; |
| 32 static const int kTableSize; |
| 33 static const double kSamplesOverPiHalf; |
| 34 }; |
| 35 |
| 36 } } // namespace v8::internal |
| 37 |
| 38 #endif // V8_TRIG_TABLE_H_ |
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