1 /* 2 * SPDX-FileCopyrightText: Copyright 2010-2022 Arm Limited and/or its affiliates <open-source-office@arm.com> 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Licensed under the Apache License, Version 2.0 (the License); you may 7 * not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT 14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 /* ---------------------------------------------------------------------- 20 * Project: CMSIS NN Library 21 * Title: arm_nntables.c 22 * Description: Converts the elements of the Q7 vector to Q15 vector without left-shift 23 * 24 * $Date: 28 October 2022 25 * $Revision: V.2.1.0 26 * 27 * Target Processor: Cortex-M cores 28 * 29 * -------------------------------------------------------------------- */ 30 31 #include "arm_nnsupportfunctions.h" 32 33 /** 34 * @brief tables for various activation functions 35 * 36 * This file include the declaration of common tables. 37 * Most of them are used for activation functions 38 * 39 */ 40 41 // Table of sigmoid(i/24) at 0.16 format - 256 elements. 42 // Combined sigmoid and tanh look-up table, since 43 // tanh(x) = 2*sigmoid(2*x) -1. 44 // Both functions are symmetric, so the LUT table is only needed 45 // for the absolute value of the input. 46 const uint16_t sigmoid_table_uint16[256] = { 47 32768, 33451, 34133, 34813, 35493, 36169, 36843, 37513, 38180, 38841, 39498, 40149, 40794, 41432, 42064, 42688, 48 43304, 43912, 44511, 45102, 45683, 46255, 46817, 47369, 47911, 48443, 48964, 49475, 49975, 50464, 50942, 51409, 49 51865, 52311, 52745, 53169, 53581, 53983, 54374, 54755, 55125, 55485, 55834, 56174, 56503, 56823, 57133, 57433, 50 57724, 58007, 58280, 58544, 58800, 59048, 59288, 59519, 59743, 59959, 60168, 60370, 60565, 60753, 60935, 61110, 51 61279, 61441, 61599, 61750, 61896, 62036, 62172, 62302, 62428, 62549, 62666, 62778, 62886, 62990, 63090, 63186, 52 63279, 63368, 63454, 63536, 63615, 63691, 63765, 63835, 63903, 63968, 64030, 64090, 64148, 64204, 64257, 64308, 53 64357, 64405, 64450, 64494, 64536, 64576, 64614, 64652, 64687, 64721, 64754, 64786, 64816, 64845, 64873, 64900, 54 64926, 64950, 64974, 64997, 65019, 65039, 65060, 65079, 65097, 65115, 65132, 65149, 65164, 65179, 65194, 65208, 55 65221, 65234, 65246, 65258, 65269, 65280, 65291, 65301, 65310, 65319, 65328, 65337, 65345, 65352, 65360, 65367, 56 65374, 65381, 65387, 65393, 65399, 65404, 65410, 65415, 65420, 65425, 65429, 65433, 65438, 65442, 65445, 65449, 57 65453, 65456, 65459, 65462, 65465, 65468, 65471, 65474, 65476, 65479, 65481, 65483, 65485, 65488, 65489, 65491, 58 65493, 65495, 65497, 65498, 65500, 65501, 65503, 65504, 65505, 65507, 65508, 65509, 65510, 65511, 65512, 65513, 59 65514, 65515, 65516, 65517, 65517, 65518, 65519, 65520, 65520, 65521, 65522, 65522, 65523, 65523, 65524, 65524, 60 65525, 65525, 65526, 65526, 65526, 65527, 65527, 65528, 65528, 65528, 65529, 65529, 65529, 65529, 65530, 65530, 61 65530, 65530, 65531, 65531, 65531, 65531, 65531, 65532, 65532, 65532, 65532, 65532, 65532, 65533, 65533, 65533, 62 65533, 65533, 65533, 65533, 65533, 65534, 65534, 65534, 65534, 65534, 65534, 65534, 65534, 65534, 65534, 65535}; 63
