diff options
Diffstat (limited to 'fw/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix2_q31.c')
| -rw-r--r-- | fw/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix2_q31.c | 338 |
1 files changed, 0 insertions, 338 deletions
diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix2_q31.c b/fw/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix2_q31.c deleted file mode 100644 index e69400c..0000000 --- a/fw/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix2_q31.c +++ /dev/null @@ -1,338 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_cfft_radix2_q31.c
- * Description: Radix-2 Decimation in Frequency CFFT & CIFFT Fixed point processing function
- *
- * $Date: 27. January 2017
- * $Revision: V.1.5.1
- *
- * Target Processor: Cortex-M cores
- * -------------------------------------------------------------------- */
-/*
- * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "arm_math.h"
-
-void arm_radix2_butterfly_q31(
- q31_t * pSrc,
- uint32_t fftLen,
- q31_t * pCoef,
- uint16_t twidCoefModifier);
-
-void arm_radix2_butterfly_inverse_q31(
- q31_t * pSrc,
- uint32_t fftLen,
- q31_t * pCoef,
- uint16_t twidCoefModifier);
-
-void arm_bitreversal_q31(
- q31_t * pSrc,
- uint32_t fftLen,
- uint16_t bitRevFactor,
- uint16_t * pBitRevTab);
-
-/**
-* @ingroup groupTransforms
-*/
-
-/**
-* @addtogroup ComplexFFT
-* @{
-*/
-
-/**
-* @details
-* @brief Processing function for the fixed-point CFFT/CIFFT.
-* @deprecated Do not use this function. It has been superseded by \ref arm_cfft_q31 and will be removed
-* @param[in] *S points to an instance of the fixed-point CFFT/CIFFT structure.
-* @param[in, out] *pSrc points to the complex data buffer of size <code>2*fftLen</code>. Processing occurs in-place.
-* @return none.
-*/
-
-void arm_cfft_radix2_q31(
-const arm_cfft_radix2_instance_q31 * S,
-q31_t * pSrc)
-{
-
- if (S->ifftFlag == 1U)
- {
- arm_radix2_butterfly_inverse_q31(pSrc, S->fftLen,
- S->pTwiddle, S->twidCoefModifier);
- }
- else
- {
- arm_radix2_butterfly_q31(pSrc, S->fftLen,
- S->pTwiddle, S->twidCoefModifier);
- }
-
- arm_bitreversal_q31(pSrc, S->fftLen, S->bitRevFactor, S->pBitRevTable);
-}
-
-/**
-* @} end of ComplexFFT group
-*/
-
-void arm_radix2_butterfly_q31(
-q31_t * pSrc,
-uint32_t fftLen,
-q31_t * pCoef,
-uint16_t twidCoefModifier)
-{
-
- unsigned i, j, k, l, m;
- unsigned n1, n2, ia;
- q31_t xt, yt, cosVal, sinVal;
- q31_t p0, p1;
-
- //N = fftLen;
- n2 = fftLen;
-
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- // loop for groups
- for (i = 0; i < n2; i++)
- {
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- l = i + n2;
- xt = (pSrc[2 * i] >> 1U) - (pSrc[2 * l] >> 1U);
- pSrc[2 * i] = ((pSrc[2 * i] >> 1U) + (pSrc[2 * l] >> 1U)) >> 1U;
-
- yt = (pSrc[2 * i + 1] >> 1U) - (pSrc[2 * l + 1] >> 1U);
- pSrc[2 * i + 1] =
- ((pSrc[2 * l + 1] >> 1U) + (pSrc[2 * i + 1] >> 1U)) >> 1U;
-
- mult_32x32_keep32_R(p0, xt, cosVal);
- mult_32x32_keep32_R(p1, yt, cosVal);
- multAcc_32x32_keep32_R(p0, yt, sinVal);
- multSub_32x32_keep32_R(p1, xt, sinVal);
-
- pSrc[2U * l] = p0;
- pSrc[2U * l + 1U] = p1;
-
- } // groups loop end
-
- twidCoefModifier <<= 1U;
-
- // loop for stage
- for (k = fftLen / 2; k > 2; k = k >> 1)
- {
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- // loop for groups
- for (j = 0; j < n2; j++)
- {
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- // loop for butterfly
- i = j;
- m = fftLen / n1;
- do
- {
- l = i + n2;
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]) >> 1U;
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]) >> 1U;
-
- mult_32x32_keep32_R(p0, xt, cosVal);
- mult_32x32_keep32_R(p1, yt, cosVal);
- multAcc_32x32_keep32_R(p0, yt, sinVal);
- multSub_32x32_keep32_R(p1, xt, sinVal);
-
- pSrc[2U * l] = p0;
- pSrc[2U * l + 1U] = p1;
- i += n1;
- m--;
- } while ( m > 0); // butterfly loop end
-
- } // groups loop end
-
- twidCoefModifier <<= 1U;
- } // stages loop end
-
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- // loop for butterfly
- for (i = 0; i < fftLen; i += n1)
- {
- l = i + n2;
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]);
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]);
-
- pSrc[2U * l] = xt;
-
- pSrc[2U * l + 1U] = yt;
-
- i += n1;
- l = i + n2;
-
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]);
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]);
-
- pSrc[2U * l] = xt;
-
- pSrc[2U * l + 1U] = yt;
-
- } // butterfly loop end
-
-}
-
-
-void arm_radix2_butterfly_inverse_q31(
-q31_t * pSrc,
-uint32_t fftLen,
-q31_t * pCoef,
-uint16_t twidCoefModifier)
-{
-
- unsigned i, j, k, l;
- unsigned n1, n2, ia;
- q31_t xt, yt, cosVal, sinVal;
- q31_t p0, p1;
-
- //N = fftLen;
- n2 = fftLen;
-
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- // loop for groups
- for (i = 0; i < n2; i++)
- {
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- l = i + n2;
- xt = (pSrc[2 * i] >> 1U) - (pSrc[2 * l] >> 1U);
- pSrc[2 * i] = ((pSrc[2 * i] >> 1U) + (pSrc[2 * l] >> 1U)) >> 1U;
-
- yt = (pSrc[2 * i + 1] >> 1U) - (pSrc[2 * l + 1] >> 1U);
- pSrc[2 * i + 1] =
- ((pSrc[2 * l + 1] >> 1U) + (pSrc[2 * i + 1] >> 1U)) >> 1U;
-
- mult_32x32_keep32_R(p0, xt, cosVal);
- mult_32x32_keep32_R(p1, yt, cosVal);
- multSub_32x32_keep32_R(p0, yt, sinVal);
- multAcc_32x32_keep32_R(p1, xt, sinVal);
-
- pSrc[2U * l] = p0;
- pSrc[2U * l + 1U] = p1;
- } // groups loop end
-
- twidCoefModifier = twidCoefModifier << 1U;
-
- // loop for stage
- for (k = fftLen / 2; k > 2; k = k >> 1)
- {
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- // loop for groups
- for (j = 0; j < n2; j++)
- {
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- // loop for butterfly
- for (i = j; i < fftLen; i += n1)
- {
- l = i + n2;
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]) >> 1U;
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]) >> 1U;
-
- mult_32x32_keep32_R(p0, xt, cosVal);
- mult_32x32_keep32_R(p1, yt, cosVal);
- multSub_32x32_keep32_R(p0, yt, sinVal);
- multAcc_32x32_keep32_R(p1, xt, sinVal);
-
- pSrc[2U * l] = p0;
- pSrc[2U * l + 1U] = p1;
- } // butterfly loop end
-
- } // groups loop end
-
- twidCoefModifier = twidCoefModifier << 1U;
- } // stages loop end
-
- n1 = n2;
- n2 = n2 >> 1;
- ia = 0;
-
- cosVal = pCoef[ia * 2];
- sinVal = pCoef[(ia * 2) + 1];
- ia = ia + twidCoefModifier;
-
- // loop for butterfly
- for (i = 0; i < fftLen; i += n1)
- {
- l = i + n2;
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]);
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]);
-
- pSrc[2U * l] = xt;
-
- pSrc[2U * l + 1U] = yt;
-
- i += n1;
- l = i + n2;
-
- xt = pSrc[2 * i] - pSrc[2 * l];
- pSrc[2 * i] = (pSrc[2 * i] + pSrc[2 * l]);
-
- yt = pSrc[2 * i + 1] - pSrc[2 * l + 1];
- pSrc[2 * i + 1] = (pSrc[2 * l + 1] + pSrc[2 * i + 1]);
-
- pSrc[2U * l] = xt;
-
- pSrc[2U * l + 1U] = yt;
-
- } // butterfly loop end
-
-}
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