From 76177aa280494bb36d7a0bcbda1078d4db717020 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Mon, 9 Dec 2019 11:25:19 +0100 Subject: Official ARM version: v4.5 --- Documentation/DSP/html/arm__cfft__q31_8c.html | 361 ++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 Documentation/DSP/html/arm__cfft__q31_8c.html (limited to 'Documentation/DSP/html/arm__cfft__q31_8c.html') diff --git a/Documentation/DSP/html/arm__cfft__q31_8c.html b/Documentation/DSP/html/arm__cfft__q31_8c.html new file mode 100644 index 0000000..6700e87 --- /dev/null +++ b/Documentation/DSP/html/arm__cfft__q31_8c.html @@ -0,0 +1,361 @@ + + + + + +arm_cfft_q31.c File Reference +CMSIS-DSP: arm_cfft_q31.c File Reference + + + + + + + + + + + + + + + +
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CMSIS-DSP +  Version 1.4.7 +
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CMSIS DSP Software Library
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arm_cfft_q31.c File Reference
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void arm_radix4_butterfly_q31 (q31_t *pSrc, uint32_t fftLen, q31_t *pCoef, uint32_t twidCoefModifier)
 Core function for the Q31 CFFT butterfly process.
 
void arm_radix4_butterfly_inverse_q31 (q31_t *pSrc, uint32_t fftLen, q31_t *pCoef, uint32_t twidCoefModifier)
 Core function for the Q31 CIFFT butterfly process.
 
void arm_bitreversal_32 (uint32_t *pSrc, const uint16_t bitRevLen, const uint16_t *pBitRevTable)
 
void arm_cfft_radix4by2_q31 (q31_t *pSrc, uint32_t fftLen, const q31_t *pCoef)
 
void arm_cfft_radix4by2_inverse_q31 (q31_t *pSrc, uint32_t fftLen, const q31_t *pCoef)
 
void arm_cfft_q31 (const arm_cfft_instance_q31 *S, q31_t *p1, uint8_t ifftFlag, uint8_t bitReverseFlag)
 Processing function for the fixed-point complex FFT in Q31 format.
 
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Function Documentation

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void arm_bitreversal_32 (uint32_t * pSrc,
const uint16_t bitRevLen,
const uint16_t * pBitRevTable 
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void arm_cfft_radix4by2_inverse_q31 (q31_t * pSrc,
uint32_t fftLen,
const q31_t * pCoef 
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References arm_radix4_butterfly_inverse_q31(), mult_32x32_keep32_R, multAcc_32x32_keep32_R, and multSub_32x32_keep32_R.

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Referenced by arm_cfft_q31().

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void arm_cfft_radix4by2_q31 (q31_t * pSrc,
uint32_t fftLen,
const q31_t * pCoef 
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end of ComplexFFT group

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References arm_radix4_butterfly_q31(), mult_32x32_keep32_R, multAcc_32x32_keep32_R, and multSub_32x32_keep32_R.

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Referenced by arm_cfft_q31().

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void arm_radix4_butterfly_inverse_q31 (q31_t * pSrc,
uint32_t fftLen,
q31_t * pCoef,
uint32_t twidCoefModifier 
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Parameters
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[in,out]*pSrcpoints to the in-place buffer of Q31 data type.
[in]fftLenlength of the FFT.
[in]*pCoefpoints to twiddle coefficient buffer.
[in]twidCoefModifiertwiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
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Returns
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References __SIMD64.

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Referenced by arm_cfft_q31(), arm_cfft_radix4_q31(), and arm_cfft_radix4by2_inverse_q31().

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void arm_radix4_butterfly_q31 (q31_t * pSrc,
uint32_t fftLen,
q31_t * pCoef,
uint32_t twidCoefModifier 
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end of ComplexFFT group

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Parameters
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[in,out]*pSrcpoints to the in-place buffer of Q31 data type.
[in]fftLenlength of the FFT.
[in]*pCoefpoints to twiddle coefficient buffer.
[in]twidCoefModifiertwiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
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Returns
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References __SIMD64.

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Referenced by arm_cfft_q31(), arm_cfft_radix4_q31(), and arm_cfft_radix4by2_q31().

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