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