diff options
Diffstat (limited to 'src/modules/mathlib/CMSIS/DSP_Lib/Source/TransformFunctions/arm_cfft_radix4_init_q31.c')
| -rw-r--r-- | src/modules/mathlib/CMSIS/DSP_Lib/Source/TransformFunctions/arm_cfft_radix4_init_q31.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/modules/mathlib/CMSIS/DSP_Lib/Source/TransformFunctions/arm_cfft_radix4_init_q31.c b/src/modules/mathlib/CMSIS/DSP_Lib/Source/TransformFunctions/arm_cfft_radix4_init_q31.c deleted file mode 100644 index 6614994f7..000000000 --- a/src/modules/mathlib/CMSIS/DSP_Lib/Source/TransformFunctions/arm_cfft_radix4_init_q31.c +++ /dev/null @@ -1,145 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_cfft_radix4_init_q31.c
-*
-* Description: Radix-4 Decimation in Frequency Q31 FFT & IFFT 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 0.0.5 2010/04/26
-* incorporated review comments and updated with latest CMSIS layer
-*
-* Version 0.0.3 2010/03/10
-* Initial version
-* -------------------------------------------------------------------- */
-
-#include "arm_math.h"
-#include "arm_common_tables.h"
-
-/**
- * @ingroup groupTransforms
- */
-
-/**
- * @addtogroup Radix4_CFFT_CIFFT
- * @{
- */
-
-/**
-*
-* @brief Initialization function for the Q31 CFFT/CIFFT.
-* @param[in,out] *S points to an instance of the Q31 CFFT/CIFFT structure.
-* @param[in] fftLen length of the FFT.
-* @param[in] ifftFlag flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.
-* @param[in] bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.
-* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>fftLen</code> is not a supported value.
-*
-* \par Description:
-* \par
-* The parameter <code>ifftFlag</code> controls whether a forward or inverse transform is computed.
-* Set(=1) ifftFlag for calculation of CIFFT otherwise CFFT is calculated
-* \par
-* The parameter <code>bitReverseFlag</code> controls whether output is in normal order or bit reversed order.
-* Set(=1) bitReverseFlag for output to be in normal order otherwise output is in bit reversed order.
-* \par
-* The parameter <code>fftLen</code> Specifies length of CFFT/CIFFT process. Supported FFT Lengths are 16, 64, 256, 1024.
-* \par
-* This Function also initializes Twiddle factor table pointer and Bit reversal table pointer.
-*/
-
-arm_status arm_cfft_radix4_init_q31(
- arm_cfft_radix4_instance_q31 * S,
- uint16_t fftLen,
- uint8_t ifftFlag,
- uint8_t bitReverseFlag)
-{
- /* Initialise the default arm status */
- arm_status status = ARM_MATH_SUCCESS;
- /* Initialise the FFT length */
- S->fftLen = fftLen;
- /* Initialise the Twiddle coefficient pointer */
- S->pTwiddle = (q31_t *) twiddleCoefQ31;
- /* Initialise the Flag for selection of CFFT or CIFFT */
- S->ifftFlag = ifftFlag;
- /* Initialise the Flag for calculation Bit reversal or not */
- S->bitReverseFlag = bitReverseFlag;
-
- /* Initializations of Instance structure depending on the FFT length */
- switch (S->fftLen)
- {
- /* Initializations of structure parameters for 4096 point FFT */
- case 4096u:
- /* Initialise the twiddle coef modifier value */
- S->twidCoefModifier = 1u;
- /* Initialise the bit reversal table modifier */
- S->bitRevFactor = 1u;
- /* Initialise the bit reversal table pointer */
- S->pBitRevTable = (uint16_t *) armBitRevTable;
- break;
-
- /* Initializations of structure parameters for 1024 point FFT */
- case 1024u:
- /* Initialise the twiddle coef modifier value */
- S->twidCoefModifier = 4u;
- /* Initialise the bit reversal table modifier */
- S->bitRevFactor = 4u;
- /* Initialise the bit reversal table pointer */
- S->pBitRevTable = (uint16_t *) & armBitRevTable[3];
- break;
-
- case 256u:
- /* Initializations of structure parameters for 256 point FFT */
- S->twidCoefModifier = 16u;
- S->bitRevFactor = 16u;
- S->pBitRevTable = (uint16_t *) & armBitRevTable[15];
- break;
-
- case 64u:
- /* Initializations of structure parameters for 64 point FFT */
- S->twidCoefModifier = 64u;
- S->bitRevFactor = 64u;
- S->pBitRevTable = (uint16_t *) & armBitRevTable[63];
- break;
-
- case 16u:
- /* Initializations of structure parameters for 16 point FFT */
- S->twidCoefModifier = 256u;
- S->bitRevFactor = 256u;
- S->pBitRevTable = (uint16_t *) & armBitRevTable[255];
- break;
-
- default:
- /* Reporting argument error if fftSize is not valid value */
- status = ARM_MATH_ARGUMENT_ERROR;
- break;
- }
-
- return (status);
-}
-
-/**
- * @} end of Radix4_CFFT_CIFFT group
- */
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