1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "common/fastexp.h" 18 19 namespace libtextclassifier { 20 namespace nlp_core { 21 22 const int FastMathClass::kBits; 23 const int FastMathClass::kMask1; 24 const int FastMathClass::kMask2; 25 constexpr float FastMathClass::kLogBase2OfE; 26 27 FastMathClass FastMathInstance; 28 29 // Data taken from util/math/fastmath.cc 30 const FastMathClass::Table FastMathClass::cache_ = { 31 {0, 45549, 91345, 137391, 183686, 230233, 277032, 324086, 371395, 418961, 32 466785, 514869, 563214, 611822, 660693, 709830, 759233, 808905, 858847, 33 909060, 959545, 1010305, 1061340, 1112652, 1164243, 1216114, 1268267, 34 1320703, 1373423, 1426430, 1479725, 1533309, 1587184, 1641351, 1695813, 35 1750570, 1805625, 1860979, 1916633, 1972590, 2028850, 2085416, 2142289, 36 2199470, 2256963, 2314767, 2372885, 2431319, 2490070, 2549140, 2608531, 37 2668245, 2728282, 2788646, 2849337, 2910358, 2971710, 3033396, 3095416, 38 3157773, 3220469, 3283505, 3346884, 3410606, 3474675, 3539091, 3603857, 39 3668975, 3734447, 3800274, 3866458, 3933002, 3999907, 4067176, 4134809, 40 4202810, 4271180, 4339922, 4409036, 4478526, 4548394, 4618640, 4689268, 41 4760280, 4831677, 4903462, 4975636, 5048203, 5121164, 5194520, 5268275, 42 5342431, 5416989, 5491952, 5567322, 5643101, 5719292, 5795897, 5872917, 43 5950356, 6028215, 6106497, 6185204, 6264338, 6343902, 6423898, 6504329, 44 6585196, 6666502, 6748250, 6830442, 6913080, 6996166, 7079704, 7163696, 45 7248143, 7333049, 7418416, 7504247, 7590543, 7677309, 7764545, 7852255, 46 7940441, 8029106, 8118253, 8207884, 8298001} 47 }; 48 49 } // namespace nlp_core 50 } // namespace libtextclassifier 51