1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_TRIG_TABLE_H_ 29 #define V8_TRIG_TABLE_H_ 30 31 32 namespace v8 { 33 namespace internal { 34 35 class TrigonometricLookupTable : public AllStatic { 36 public: 37 // Casting away const-ness to use as argument for typed array constructor. sin_table()38 static void* sin_table() { 39 return const_cast<double*>(&kSinTable[0]); 40 } 41 cos_x_interval_table()42 static void* cos_x_interval_table() { 43 return const_cast<double*>(&kCosXIntervalTable[0]); 44 } 45 samples_over_pi_half()46 static double samples_over_pi_half() { return kSamplesOverPiHalf; } samples()47 static int samples() { return kSamples; } table_num_bytes()48 static int table_num_bytes() { return kTableSize * sizeof(*kSinTable); } table_size()49 static int table_size() { return kTableSize; } 50 51 private: 52 static const double kSinTable[]; 53 static const double kCosXIntervalTable[]; 54 static const int kSamples; 55 static const int kTableSize; 56 static const double kSamplesOverPiHalf; 57 }; 58 59 } } // namespace v8::internal 60 61 #endif // V8_TRIG_TABLE_H_ 62