text: /*-----------------------------------------------------------------------------
  * Copyright (C) 2010 ARM Limited. All rights reserved.
  *
  * $Date:        15. February 2012
  * $Revision: 	V1.1.0
  *
  * Project: 	    CMSIS DSP Library
  * Title:        arm_lms_init_f32.c
  *
  * Description:  Floating-point LMS filter initialization function.
  *
  * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
  *
  * Version 1.1.0 2012/02/15
  *    Updated with more optimizations, bug fixes and minor API changes.
  *
  * Version 1.0.10 2011/7/15
  *    Big Endian support added and Merged M0 and M3/M4 Source code.
  *
  * Version 1.0.3 2010/11/29
  *    Re-organized the CMSIS folders and updated documentation.
  *
  * Version 1.0.2 2010/11/11
  *    Documentation updated.
  *
  * Version 1.0.1 2010/10/05
  *    Production release and review comments incorporated.
  *
  * Version 1.0.0 2010/09/20
  *    Production release and review comments incorporated
  *
  * Version 0.0.7  2010/06/10
  *    Misra-C changes done
  * ---------------------------------------------------------------------------*/
  
  #include "arm_math.h"
  
  /**
   * @addtogroup LMS
   * @{
   */
  
  /**
   * @brief Initialization function for floating-point LMS filter.
   * @param[in] *S points to an instance of the floating-point LMS filter structure.
   * @param[in] numTaps  number of filter coefficients.
   * @param[in] *pCoeffs points to the coefficient buffer.
   * @param[in] *pState points to state buffer.
   * @param[in] mu step size that controls filter coefficient updates.
   * @param[in] blockSize number of samples to process.
   * @return none.
   */
  
  /**
   * \par Description:
   * <code>pCoeffs</code> points to the array of filter coefficients stored in time reversed order:
   * <pre>
   *    {b[numTaps-1], b[numTaps-2], b[N-2], ..., b[1], b[0]}
   * </pre>
   * The initial filter coefficients serve as a starting point for the adaptive filter.
   * <code>pState</code> points to an array of length <code>numTaps+blockSize-1</code> samples, where <code>blockSize</code> is the number of input samples processed by each call to <code>arm_lms_f32()</code>.
   */
  
  void arm_lms_init_f32(
      arm_lms_instance_f32* S,
      uint16_t numTaps,
      float32_t* pCoeffs,
      float32_t* pState,
      float32_t mu,
      uint32_t blockSize)
  {
  	/* Assign filter taps */
  	S->numTaps = numTaps;
  
  	/* Assign coefficient pointer */
  	S->pCoeffs = pCoeffs;
  
  	/* Clear state buffer and size is always blockSize + numTaps */
  	memset(pState, 0, (numTaps + (blockSize - 1)) * sizeof(float32_t));
  
  	/* Assign state pointer */
  	S->pState = pState;
  
  	/* Assign Step size value */
  	S->mu = mu;
  }
  
  /**
   * @} end of LMS group
   */
  