237 lines
7.5 KiB
C
237 lines
7.5 KiB
C
/******************************************************************************
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* @file arm_math.h
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* @brief Public header file for CMSIS DSP Library
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* @version V1.9.0
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* @date 23 April 2021
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* Target Processor: Cortex-M and Cortex-A cores
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******************************************************************************/
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/*
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* Copyright (c) 2010-2021 Arm Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* 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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* 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, WITHOUT
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* 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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\mainpage CMSIS DSP Software Library
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*
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* \section intro Introduction
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*
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* This user manual describes the CMSIS DSP software library,
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* a suite of common signal processing functions for use on Cortex-M and Cortex-A processor
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* based devices.
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*
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* The library is divided into a number of functions each covering a specific category:
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* - Basic math functions
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* - Fast math functions
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* - Complex math functions
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* - Filtering functions
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* - Matrix functions
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* - Transform functions
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* - Motor control functions
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* - Statistical functions
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* - Support functions
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* - Interpolation functions
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* - Support Vector Machine functions (SVM)
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* - Bayes classifier functions
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* - Distance functions
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* - Quaternion functions
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*
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* The library has generally separate functions for operating on 8-bit integers, 16-bit integers,
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* 32-bit integer and 32-bit floating-point values.
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*
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* The library is providing vectorized versions of most algorthms for Helium
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* and of most f32 algorithms for Neon.
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*
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* When using a vectorized version, provide a little bit of padding after the end of
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* a buffer (3 words) because the vectorized code may read a little bit after the end
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* of a buffer. You don't have to modify your buffers but just ensure that the
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* end of buffer + padding is not outside of a memory region.
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*
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* \section using Using the Library
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*
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* The library is released in source form. It is strongly advised to compile the library using -Ofast to
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* have the best performances.
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*
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* The library functions are declared in the public file <code>arm_math.h</code> which is placed in the <code>Include</code> folder.
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* Simply include this file. If you don't want to include everything, you can also rely
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* on headers in Include/dsp folder and use only what you need.
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*
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* \section example Examples
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*
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* The library ships with a number of examples which demonstrate how to use the library functions.
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*
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* \section toolchain Toolchain Support
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*
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* The library is now tested on Fast Models building with cmake.
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* Core M0, M4, M7, M33, M55, A32 are tested.
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*
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*
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* \section preprocessor Preprocessor Macros
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*
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* Each library project have different preprocessor macros.
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*
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* - ARM_MATH_BIG_ENDIAN:
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*
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* Define macro ARM_MATH_BIG_ENDIAN to build the library for big endian targets. By default library builds for little endian targets.
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*
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* - ARM_MATH_MATRIX_CHECK:
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*
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* Define macro ARM_MATH_MATRIX_CHECK for checking on the input and output sizes of matrices
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*
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* - ARM_MATH_ROUNDING:
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*
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* Define macro ARM_MATH_ROUNDING for rounding on support functions
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*
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* - ARM_MATH_LOOPUNROLL:
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*
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* Define macro ARM_MATH_LOOPUNROLL to enable manual loop unrolling in DSP functions
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*
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* - ARM_MATH_NEON:
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*
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* Define macro ARM_MATH_NEON to enable Neon versions of the DSP functions.
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* It is not enabled by default when Neon is available because performances are
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* dependent on the compiler and target architecture.
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*
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* - ARM_MATH_NEON_EXPERIMENTAL:
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*
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* Define macro ARM_MATH_NEON_EXPERIMENTAL to enable experimental Neon versions of
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* of some DSP functions. Experimental Neon versions currently do not have better
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* performances than the scalar versions.
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*
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* - ARM_MATH_HELIUM:
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*
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* It implies the flags ARM_MATH_MVEF and ARM_MATH_MVEI and ARM_MATH_MVE_FLOAT16.
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*
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* - ARM_MATH_HELIUM_EXPERIMENTAL:
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*
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* Only taken into account when ARM_MATH_MVEF, ARM_MATH_MVEI or ARM_MATH_MVE_FLOAT16 are defined.
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* Enable some vector versions which may have worse performance than scalar
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* depending on the core / compiler configuration.
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*
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* - ARM_MATH_MVEF:
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*
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* Select Helium versions of the f32 algorithms.
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* It implies ARM_MATH_FLOAT16 and ARM_MATH_MVEI.
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*
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* - ARM_MATH_MVEI:
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*
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* Select Helium versions of the int and fixed point algorithms.
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*
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* - ARM_MATH_MVE_FLOAT16:
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*
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* MVE Float16 implementations of some algorithms (Requires MVE extension).
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*
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* - DISABLEFLOAT16:
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*
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* Disable float16 algorithms when __fp16 is not supported for a
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* specific compiler / core configuration.
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* This is only valid for scalar. When vector architecture is
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* supporting f16 then it can't be disabled.
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*
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* - ARM_MATH_AUTOVECTORIZE:
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*
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* With Helium or Neon, disable the use of vectorized code with C intrinsics
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* and use pure C instead. The vectorization is then done by the compiler.
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*
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* <hr>
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* \section pack CMSIS-DSP in ARM::CMSIS Pack
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*
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* The following files relevant to CMSIS-DSP are present in the <b>ARM::CMSIS</b> Pack directories:
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* |File/Folder |Content |
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* |---------------------------------|------------------------------------------------------------------------|
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* |\b CMSIS\\Documentation\\DSP | This documentation |
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* |\b CMSIS\\DSP\\Examples | Example projects demonstrating the usage of the library functions |
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* |\b CMSIS\\DSP\\Include | DSP_Lib include files for using and building the lib
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* |\b CMSIS\\DSP\\PrivateInclude | DSP_Lib private include files for building the lib |
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* |\b CMSIS\\DSP\\Lib | DSP_Lib binaries |
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* |\b CMSIS\\DSP\\Source | DSP_Lib source files |
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*
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* <hr>
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* \section rev Revision History of CMSIS-DSP
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* Please refer to \ref ChangeLog_pg.
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*/
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/**
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* @defgroup groupExamples Examples
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*/
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#ifndef _ARM_MATH_H
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#define _ARM_MATH_H
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#include "arm_math_types.h"
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#include "arm_math_memory.h"
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#include "dsp/none.h"
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#include "dsp/utils.h"
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#include "dsp/basic_math_functions.h"
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#include "dsp/interpolation_functions.h"
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#include "dsp/bayes_functions.h"
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#include "dsp/matrix_functions.h"
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#include "dsp/complex_math_functions.h"
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#include "dsp/statistics_functions.h"
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#include "dsp/controller_functions.h"
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#include "dsp/support_functions.h"
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#include "dsp/distance_functions.h"
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#include "dsp/svm_functions.h"
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#include "dsp/fast_math_functions.h"
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#include "dsp/transform_functions.h"
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#include "dsp/filtering_functions.h"
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#include "dsp/quaternion_math_functions.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//#define TABLE_SPACING_Q31 0x400000
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//#define TABLE_SPACING_Q15 0x80
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ARM_MATH_H */
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/**
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*
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* End of file.
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*/
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