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# arm_lms_init_f32.c

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    00001 /*-----------------------------------------------------------------------------
    00002 * Copyright (C) 2010 ARM Limited. All rights reserved.
    00003 *
    00004 * $Date:        29. November 2010
    00005 * $Revision:    V1.0.3
    00006 *
    00007 * Project:      CMSIS DSP Library
    00008 * Title:        arm_lms_init_f32.c
    00009 *
    00010 * Description:  Floating-point LMS filter initialization function.
    00011 *
    00012 * Target Processor: Cortex-M4/Cortex-M3
    00013 *
    00014 * Version 1.0.3 2010/11/29
    00015 *    Re-organized the CMSIS folders and updated documentation.
    00016 *
    00017 * Version 1.0.2 2010/11/11
    00018 *    Documentation updated.
    00019 *
    00020 * Version 1.0.1 2010/10/05
    00021 *    Production release and review comments incorporated.
    00022 *
    00023 * Version 1.0.0 2010/09/20
    00024 *    Production release and review comments incorporated
    00025 *
    00026 * Version 0.0.7  2010/06/10
    00027 *    Misra-C changes done
    00028 * ---------------------------------------------------------------------------*/
    00029
    00030 #include "arm_math.h"
    00031
    00058 void arm_lms_init_f32(
    00059   arm_lms_instance_f32 * S,
    00060   uint16_t numTaps,
    00061   float32_t * pCoeffs,
    00062   float32_t * pState,
    00063   float32_t mu,
    00064   uint32_t blockSize)
    00065 {
    00066   /* Assign filter taps */
    00067   S->numTaps = numTaps;
    00068
    00069   /* Assign coefficient pointer */
    00070   S->pCoeffs = pCoeffs;
    00071
    00072   /* Clear state buffer and size is always blockSize + numTaps */
    00073   memset(pState, 0, (numTaps + (blockSize - 1)) * sizeof(float32_t));
    00074
    00075   /* Assign state pointer */
    00076   S->pState = pState;
    00077
    00078   /* Assign Step size value */
    00079   S->mu = mu;
    00080 }
    00081

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