arm_biquad_cascade_df2T_init_f32.c

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/*-----------------------------------------------------------------------------   
* Copyright (C) 2010 ARM Limited. All rights reserved.   
*   
* $Date:        15. July 2011  
* $Revision:    V1.0.10  
*   
* Project:      CMSIS DSP Library   
* Title:        arm_biquad_cascade_df2T_init_f32.c   
*   
* Description:  Initialization function for the floating-point transposed  
*               direct form II Biquad cascade filter.  
*   
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
*  
* 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"

void arm_biquad_cascade_df2T_init_f32(
  arm_biquad_cascade_df2T_instance_f32 * S,
  uint8_t numStages,
  float32_t * pCoeffs,
  float32_t * pState)
{
  /* Assign filter stages */
  S->numStages = numStages;

  /* Assign coefficient pointer */
  S->pCoeffs = pCoeffs;

  /* Clear state buffer and size is always 2 * numStages */
  memset(pState, 0, (2u * (uint32_t) numStages) * sizeof(float32_t));

  /* Assign state pointer */
  S->pState = pState;
}