| /****************************************************************************** |
| * |
| * 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 |