text: /* ----------------------------------------------------------------------
  * Copyright (C) 2010-2013 ARM Limited. All rights reserved.
  *
  * $Date:        17. January 2013
  * $Revision:    V1.4.1
  *
  * Project:      CMSIS DSP Library
  * Title:        arm_common_tables.h
  *
  * Description:  This file has extern declaration for common tables like Bitreverse, reciprocal etc which are used across different functions
  *
  * Target Processor: Cortex-M4/Cortex-M3
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *   - Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *   - Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in
  *     the documentation and/or other materials provided with the
  *     distribution.
  *   - Neither the name of ARM LIMITED nor the names of its contributors
  *     may be used to endorse or promote products derived from this
  *     software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  * -------------------------------------------------------------------- */
  
  #ifndef _ARM_COMMON_TABLES_H
  #define _ARM_COMMON_TABLES_H
  
  #include "arm_math.h"
  
  extern const uint16_t armBitRevTable[1024];
  extern const q15_t armRecipTableQ15[64];
  extern const q31_t armRecipTableQ31[64];
  extern const q31_t realCoefAQ31[1024];
  extern const q31_t realCoefBQ31[1024];
  extern const float32_t twiddleCoef_16[32];
  extern const float32_t twiddleCoef_32[64];
  extern const float32_t twiddleCoef_64[128];
  extern const float32_t twiddleCoef_128[256];
  extern const float32_t twiddleCoef_256[512];
  extern const float32_t twiddleCoef_512[1024];
  extern const float32_t twiddleCoef_1024[2048];
  extern const float32_t twiddleCoef_2048[4096];
  extern const float32_t twiddleCoef_4096[8192];
  #define twiddleCoef twiddleCoef_4096
  extern const q31_t twiddleCoefQ31[6144];
  extern const q15_t twiddleCoefQ15[6144];
  extern const float32_t twiddleCoef_rfft_32[32];
  extern const float32_t twiddleCoef_rfft_64[64];
  extern const float32_t twiddleCoef_rfft_128[128];
  extern const float32_t twiddleCoef_rfft_256[256];
  extern const float32_t twiddleCoef_rfft_512[512];
  extern const float32_t twiddleCoef_rfft_1024[1024];
  extern const float32_t twiddleCoef_rfft_2048[2048];
  extern const float32_t twiddleCoef_rfft_4096[4096];
  
  
  #define ARMBITREVINDEXTABLE__16_TABLE_LENGTH ((uint16_t)20  )
  #define ARMBITREVINDEXTABLE__32_TABLE_LENGTH ((uint16_t)48  )
  #define ARMBITREVINDEXTABLE__64_TABLE_LENGTH ((uint16_t)56  )
  #define ARMBITREVINDEXTABLE_128_TABLE_LENGTH ((uint16_t)208 )
  #define ARMBITREVINDEXTABLE_256_TABLE_LENGTH ((uint16_t)440 )
  #define ARMBITREVINDEXTABLE_512_TABLE_LENGTH ((uint16_t)448 )
  #define ARMBITREVINDEXTABLE1024_TABLE_LENGTH ((uint16_t)1800)
  #define ARMBITREVINDEXTABLE2048_TABLE_LENGTH ((uint16_t)3808)
  #define ARMBITREVINDEXTABLE4096_TABLE_LENGTH ((uint16_t)4032)
  
  extern const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE__16_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE__32_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE__64_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE1024_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE2048_TABLE_LENGTH];
  extern const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE4096_TABLE_LENGTH];
  
  #endif /*  ARM_COMMON_TABLES_H */
  
  
  
  
  
  
  