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diff --git a/apps/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_fir_lattice_q31.c b/apps/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_fir_lattice_q31.c
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-/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_fir_lattice_q31.c
-*
-* Description: Q31 FIR lattice filter processing 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"
-
-/**
- * @ingroup groupFilters
- */
-
-/**
- * @addtogroup FIR_Lattice
- * @{
- */
-
-
-/**
- * @brief Processing function for the Q31 FIR lattice filter.
- * @param[in] *S points to an instance of the Q31 FIR lattice structure.
- * @param[in] *pSrc points to the block of input data.
- * @param[out] *pDst points to the block of output data
- * @param[in] blockSize number of samples to process.
- * @return none.
- *
- * @details
- * <b>Scaling and Overflow Behavior:</b>
- * In order to avoid overflows the input signal must be scaled down by 2*log2(numStages) bits.
- */
-
-#ifndef ARM_MATH_CM0
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
-
-void arm_fir_lattice_q31(
- const arm_fir_lattice_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- q31_t *pState; /* State pointer */
- q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q31_t *px; /* temporary state pointer */
- q31_t *pk; /* temporary coefficient pointer */
- q31_t fcurr1, fnext1, gcurr1 = 0, gnext1; /* temporary variables for first sample in loop unrolling */
- q31_t fcurr2, fnext2, gnext2; /* temporary variables for second sample in loop unrolling */
- uint32_t numStages = S->numStages; /* Length of the filter */
- uint32_t blkCnt, stageCnt; /* temporary variables for counts */
- q31_t k;
-
- pState = &S->pState[0];
-
- blkCnt = blockSize >> 1u;
-
- /* First part of the processing with loop unrolling. Compute 2 outputs at a time.
- a second loop below computes the remaining 1 sample. */
- while(blkCnt > 0u)
- {
- /* f0(n) = x(n) */
- fcurr1 = *pSrc++;
-
- /* f0(n) = x(n) */
- fcurr2 = *pSrc++;
-
- /* Initialize coeff pointer */
- pk = (pCoeffs);
-
- /* Initialize state pointer */
- px = pState;
-
- /* read g0(n - 1) from state buffer */
- gcurr1 = *px;
-
- /* Read the reflection coefficient */
- k = *pk++;
-
- /* for sample 1 processing */
- /* f1(n) = f0(n) + K1 * g0(n-1) */
- fnext1 = (q31_t) (((q63_t) gcurr1 * k) >> 32);
-
- /* g1(n) = f0(n) * K1 + g0(n-1) */
- gnext1 = (q31_t) (((q63_t) fcurr1 * (k)) >> 32);
- fnext1 = fcurr1 + (fnext1 << 1u);
- gnext1 = gcurr1 + (gnext1 << 1u);
-
- /* for sample 1 processing */
- /* f1(n) = f0(n) + K1 * g0(n-1) */
- fnext2 = (q31_t) (((q63_t) fcurr1 * k) >> 32);
-
- /* g1(n) = f0(n) * K1 + g0(n-1) */
- gnext2 = (q31_t) (((q63_t) fcurr2 * (k)) >> 32);
- fnext2 = fcurr2 + (fnext2 << 1u);
- gnext2 = fcurr1 + (gnext2 << 1u);
-
- /* save g1(n) in state buffer */
- *px++ = fcurr2;
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr1 = fnext1;
- fcurr2 = fnext2;
-
- stageCnt = (numStages - 1u);
-
- /* stage loop */
- while(stageCnt > 0u)
- {
-
- /* Read the reflection coefficient */
- k = *pk++;
-
- /* read g2(n) from state buffer */
- gcurr1 = *px;
-
- /* save g1(n) in state buffer */
- *px++ = gnext2;
-
- /* Sample processing for K2, K3.... */
- /* f2(n) = f1(n) + K2 * g1(n-1) */
- fnext1 = (q31_t) (((q63_t) gcurr1 * k) >> 32);
- fnext2 = (q31_t) (((q63_t) gnext1 * k) >> 32);
-
- fnext1 = fcurr1 + (fnext1 << 1u);
- fnext2 = fcurr2 + (fnext2 << 1u);
-
- /* g2(n) = f1(n) * K2 + g1(n-1) */
- gnext2 = (q31_t) (((q63_t) fcurr2 * (k)) >> 32);
- gnext2 = gnext1 + (gnext2 << 1u);
-
- /* g2(n) = f1(n) * K2 + g1(n-1) */
- gnext1 = (q31_t) (((q63_t) fcurr1 * (k)) >> 32);
- gnext1 = gcurr1 + (gnext1 << 1u);
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr1 = fnext1;
- fcurr2 = fnext2;
-
- stageCnt--;
-
- }
-
- /* y(n) = fN(n) */
- *pDst++ = fcurr1;
- *pDst++ = fcurr2;
-
- blkCnt--;
-
- }
-
- /* If the blockSize is not a multiple of 4, compute any remaining output samples here.
- ** No loop unrolling is used. */
- blkCnt = blockSize % 0x2u;
-
- while(blkCnt > 0u)
- {
- /* f0(n) = x(n) */
- fcurr1 = *pSrc++;
-
- /* Initialize coeff pointer */
- pk = (pCoeffs);
-
- /* Initialize state pointer */
- px = pState;
-
- /* read g0(n - 1) from state buffer */
- gcurr1 = *px;
-
- /* Read the reflection coefficient */
- k = *pk++;
-
- /* for sample 1 processing */
- /* f1(n) = f0(n) + K1 * g0(n-1) */
- fnext1 = (q31_t) (((q63_t) gcurr1 * k) >> 32);
- fnext1 = fcurr1 + (fnext1 << 1u);
-
- /* g1(n) = f0(n) * K1 + g0(n-1) */
- gnext1 = (q31_t) (((q63_t) fcurr1 * (k)) >> 32);
- gnext1 = gcurr1 + (gnext1 << 1u);
-
- /* save g1(n) in state buffer */
- *px++ = fcurr1;
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr1 = fnext1;
-
- stageCnt = (numStages - 1u);
-
- /* stage loop */
- while(stageCnt > 0u)
- {
- /* Read the reflection coefficient */
- k = *pk++;
-
- /* read g2(n) from state buffer */
- gcurr1 = *px;
-
- /* save g1(n) in state buffer */
- *px++ = gnext1;
-
- /* Sample processing for K2, K3.... */
- /* f2(n) = f1(n) + K2 * g1(n-1) */
- fnext1 = (q31_t) (((q63_t) gcurr1 * k) >> 32);
- fnext1 = fcurr1 + (fnext1 << 1u);
-
- /* g2(n) = f1(n) * K2 + g1(n-1) */
- gnext1 = (q31_t) (((q63_t) fcurr1 * (k)) >> 32);
- gnext1 = gcurr1 + (gnext1 << 1u);
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr1 = fnext1;
-
- stageCnt--;
-
- }
-
-
- /* y(n) = fN(n) */
- *pDst++ = fcurr1;
-
- blkCnt--;
-
- }
-
-
-}
-
-
-#else
-
-/* Run the below code for Cortex-M0 */
-
-void arm_fir_lattice_q31(
- const arm_fir_lattice_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- q31_t *pState; /* State pointer */
- q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q31_t *px; /* temporary state pointer */
- q31_t *pk; /* temporary coefficient pointer */
- q31_t fcurr, fnext, gcurr, gnext; /* temporary variables */
- uint32_t numStages = S->numStages; /* Length of the filter */
- uint32_t blkCnt, stageCnt; /* temporary variables for counts */
-
- pState = &S->pState[0];
-
- blkCnt = blockSize;
-
- while(blkCnt > 0u)
- {
- /* f0(n) = x(n) */
- fcurr = *pSrc++;
-
- /* Initialize coeff pointer */
- pk = (pCoeffs);
-
- /* Initialize state pointer */
- px = pState;
-
- /* read g0(n-1) from state buffer */
- gcurr = *px;
-
- /* for sample 1 processing */
- /* f1(n) = f0(n) + K1 * g0(n-1) */
- fnext = (q31_t) (((q63_t) gcurr * (*pk)) >> 31) + fcurr;
- /* g1(n) = f0(n) * K1 + g0(n-1) */
- gnext = (q31_t) (((q63_t) fcurr * (*pk++)) >> 31) + gcurr;
- /* save g1(n) in state buffer */
- *px++ = fcurr;
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr = fnext;
-
- stageCnt = (numStages - 1u);
-
- /* stage loop */
- while(stageCnt > 0u)
- {
- /* read g2(n) from state buffer */
- gcurr = *px;
-
- /* save g1(n) in state buffer */
- *px++ = gnext;
-
- /* Sample processing for K2, K3.... */
- /* f2(n) = f1(n) + K2 * g1(n-1) */
- fnext = (q31_t) (((q63_t) gcurr * (*pk)) >> 31) + fcurr;
- /* g2(n) = f1(n) * K2 + g1(n-1) */
- gnext = (q31_t) (((q63_t) fcurr * (*pk++)) >> 31) + gcurr;
-
- /* f1(n) is saved in fcurr1
- for next stage processing */
- fcurr = fnext;
-
- stageCnt--;
-
- }
-
- /* y(n) = fN(n) */
- *pDst++ = fcurr;
-
- blkCnt--;
-
- }
-
-}
-
-#endif /* #ifndef ARM_MATH_CM0 */
-
-
-/**
- * @} end of FIR_Lattice group
- */
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