/****************************************************************************** * * Copyright (C) 2018 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ***************************************************************************** * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore */ /*! ****************************************************************************** * \file common_rom.h * * \brief * This file contain square root table declarations * * \date * * \author * ittiam * ****************************************************************************** */ #ifndef SQRT_TAB_H #define SQRT_TAB_H /*****************************************************************************/ /* Constant Macros */ /*****************************************************************************/ #define INV_SQRT_2_Q31 1518500250 /* 1/sqrt(2) in Q31 */ #define INV_SQRT_2_Q15 23170 #define Q_SQRT_TAB 15 extern const WORD32 gi4_sqrt_tab[513]; /*sqrt_tab in Q15*/ #endif