diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c | 193 |
1 files changed, 92 insertions, 101 deletions
diff --git a/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c b/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c index d6f66aebf..96291458e 100644 --- a/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c +++ b/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c @@ -3,13 +3,13 @@ * Title: arm_cfft_radix4_f32.c * Description: Radix-4 Decimation in Frequency CFFT & CIFFT Floating point processing function * - * $Date: 27. January 2017 - * $Revision: V.1.5.1 + * $Date: 18. March 2019 + * $Revision: V1.6.0 * * Target Processor: Cortex-M cores * -------------------------------------------------------------------- */ /* - * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved. + * Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved. * * SPDX-License-Identifier: Apache-2.0 * @@ -29,47 +29,45 @@ #include "arm_math.h" extern void arm_bitreversal_f32( -float32_t * pSrc, -uint16_t fftSize, -uint16_t bitRevFactor, -uint16_t * pBitRevTab); + float32_t * pSrc, + uint16_t fftSize, + uint16_t bitRevFactor, + const uint16_t * pBitRevTab); void arm_radix4_butterfly_f32( -float32_t * pSrc, -uint16_t fftLen, -float32_t * pCoef, -uint16_t twidCoefModifier); + float32_t * pSrc, + uint16_t fftLen, + const float32_t * pCoef, + uint16_t twidCoefModifier); void arm_radix4_butterfly_inverse_f32( -float32_t * pSrc, -uint16_t fftLen, -float32_t * pCoef, -uint16_t twidCoefModifier, -float32_t onebyfftLen); + float32_t * pSrc, + uint16_t fftLen, + const float32_t * pCoef, + uint16_t twidCoefModifier, + float32_t onebyfftLen); /** -* @ingroup groupTransforms -*/ + @ingroup groupTransforms + */ /** -* @addtogroup ComplexFFT -* @{ -*/ + @addtogroup ComplexFFT + @{ + */ /** -* @details -* @brief Processing function for the floating-point Radix-4 CFFT/CIFFT. -* @deprecated Do not use this function. It has been superseded by \ref arm_cfft_f32 and will be removed -* in the future. -* @param[in] *S points to an instance of the floating-point Radix-4 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. -*/ + @brief Processing function for the floating-point Radix-4 CFFT/CIFFT. + @deprecated Do not use this function. It has been superseded by \ref arm_cfft_f32 and will be removed in the future. + @param[in] S points to an instance of the floating-point Radix-4 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_radix4_f32( const arm_cfft_radix4_instance_f32 * S, - float32_t * pSrc) + float32_t * pSrc) { if (S->ifftFlag == 1U) { @@ -91,46 +89,43 @@ void arm_cfft_radix4_f32( } /** -* @} end of ComplexFFT group -*/ + @} end of ComplexFFT group + */ /* ---------------------------------------------------------------------- * Internal helper function used by the FFTs * ---------------------------------------------------------------------- */ -/* -* @brief Core function for the floating-point CFFT butterfly process. -* @param[in, out] *pSrc points to the in-place buffer of floating-point data type. -* @param[in] fftLen length of the FFT. -* @param[in] *pCoef points to the twiddle coefficient buffer. -* @param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. -* @return none. -*/ +/** + brief Core function for the floating-point CFFT butterfly process. + param[in,out] pSrc points to the in-place buffer of floating-point data type + param[in] fftLen length of the FFT + param[in] pCoef points to the twiddle coefficient buffer + param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table + return none + */ void arm_radix4_butterfly_f32( -float32_t * pSrc, -uint16_t fftLen, -float32_t * pCoef, -uint16_t twidCoefModifier) + float32_t * pSrc, + uint16_t fftLen, + const float32_t * pCoef, + uint16_t twidCoefModifier) { - - float32_t co1, co2, co3, si1, si2, si3; - uint32_t ia1, ia2, ia3; - uint32_t i0, i1, i2, i3; - uint32_t n1, n2, j, k; - -#if defined (ARM_MATH_DSP) - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - - float32_t xaIn, yaIn, xbIn, ybIn, xcIn, ycIn, xdIn, ydIn; - float32_t Xaplusc, Xbplusd, Yaplusc, Ybplusd, Xaminusc, Xbminusd, Yaminusc, - Ybminusd; - float32_t Xb12C_out, Yb12C_out, Xc12C_out, Yc12C_out, Xd12C_out, Yd12C_out; - float32_t Xb12_out, Yb12_out, Xc12_out, Yc12_out, Xd12_out, Yd12_out; - float32_t *ptr1; - float32_t p0,p1,p2,p3,p4,p5; - float32_t a0,a1,a2,a3,a4,a5,a6,a7; + float32_t co1, co2, co3, si1, si2, si3; + uint32_t ia1, ia2, ia3; + uint32_t i0, i1, i2, i3; + uint32_t n1, n2, j, k; + +#if defined (ARM_MATH_LOOPUNROLL) + + float32_t xaIn, yaIn, xbIn, ybIn, xcIn, ycIn, xdIn, ydIn; + float32_t Xaplusc, Xbplusd, Yaplusc, Ybplusd, Xaminusc, Xbminusd, Yaminusc, + Ybminusd; + float32_t Xb12C_out, Yb12C_out, Xc12C_out, Yc12C_out, Xd12C_out, Yd12C_out; + float32_t Xb12_out, Yb12_out, Xc12_out, Yc12_out, Xd12_out, Yd12_out; + float32_t *ptr1; + float32_t p0,p1,p2,p3,p4,p5; + float32_t a0,a1,a2,a3,a4,a5,a6,a7; /* Initializations for the first stage */ n2 = fftLen; @@ -290,11 +285,11 @@ uint16_t twidCoefModifier) /* index calculation for the coefficients */ ia2 = ia1 + ia1; ia3 = ia2 + ia1; - co1 = pCoef[ia1 * 2U]; + co1 = pCoef[(ia1 * 2U)]; si1 = pCoef[(ia1 * 2U) + 1U]; - co2 = pCoef[ia2 * 2U]; + co2 = pCoef[(ia2 * 2U)]; si2 = pCoef[(ia2 * 2U) + 1U]; - co3 = pCoef[ia3 * 2U]; + co3 = pCoef[(ia3 * 2U)]; si3 = pCoef[(ia3 * 2U) + 1U]; /* Twiddle coefficients index modifier */ @@ -484,11 +479,9 @@ uint16_t twidCoefModifier) #else - float32_t t1, t2, r1, r2, s1, s2; - - /* Run the below code for Cortex-M0 */ + float32_t t1, t2, r1, r2, s1, s2; - /* Initializations for the fft calculation */ + /* Initializations for the fft calculation */ n2 = fftLen; n1 = n2; for (k = fftLen; k > 1U; k >>= 2U) @@ -597,42 +590,42 @@ uint16_t twidCoefModifier) twidCoefModifier <<= 2U; } -#endif /* #if defined (ARM_MATH_DSP) */ +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ } -/* -* @brief Core function for the floating-point CIFFT butterfly process. -* @param[in, out] *pSrc points to the in-place buffer of floating-point data type. -* @param[in] fftLen length of the FFT. -* @param[in] *pCoef points to twiddle coefficient buffer. -* @param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. -* @param[in] onebyfftLen value of 1/fftLen. -* @return none. -*/ +/** + brief Core function for the floating-point CIFFT butterfly process. + param[in,out] pSrc points to the in-place buffer of floating-point data type + param[in] fftLen length of the FFT + param[in] pCoef points to twiddle coefficient buffer + param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. + param[in] onebyfftLen value of 1/fftLen + return none + */ void arm_radix4_butterfly_inverse_f32( -float32_t * pSrc, -uint16_t fftLen, -float32_t * pCoef, -uint16_t twidCoefModifier, -float32_t onebyfftLen) + float32_t * pSrc, + uint16_t fftLen, + const float32_t * pCoef, + uint16_t twidCoefModifier, + float32_t onebyfftLen) { - float32_t co1, co2, co3, si1, si2, si3; - uint32_t ia1, ia2, ia3; - uint32_t i0, i1, i2, i3; - uint32_t n1, n2, j, k; + float32_t co1, co2, co3, si1, si2, si3; + uint32_t ia1, ia2, ia3; + uint32_t i0, i1, i2, i3; + uint32_t n1, n2, j, k; -#if defined (ARM_MATH_DSP) +#if defined (ARM_MATH_LOOPUNROLL) - float32_t xaIn, yaIn, xbIn, ybIn, xcIn, ycIn, xdIn, ydIn; - float32_t Xaplusc, Xbplusd, Yaplusc, Ybplusd, Xaminusc, Xbminusd, Yaminusc, - Ybminusd; - float32_t Xb12C_out, Yb12C_out, Xc12C_out, Yc12C_out, Xd12C_out, Yd12C_out; - float32_t Xb12_out, Yb12_out, Xc12_out, Yc12_out, Xd12_out, Yd12_out; - float32_t *ptr1; - float32_t p0,p1,p2,p3,p4,p5,p6,p7; - float32_t a0,a1,a2,a3,a4,a5,a6,a7; + float32_t xaIn, yaIn, xbIn, ybIn, xcIn, ycIn, xdIn, ydIn; + float32_t Xaplusc, Xbplusd, Yaplusc, Ybplusd, Xaminusc, Xbminusd, Yaminusc, + Ybminusd; + float32_t Xb12C_out, Yb12C_out, Xc12C_out, Yc12C_out, Xd12C_out, Yd12C_out; + float32_t Xb12_out, Yb12_out, Xc12_out, Yc12_out, Xd12_out, Yd12_out; + float32_t *ptr1; + float32_t p0,p1,p2,p3,p4,p5,p6,p7; + float32_t a0,a1,a2,a3,a4,a5,a6,a7; /* Initializations for the first stage */ @@ -1008,9 +1001,7 @@ float32_t onebyfftLen) #else - float32_t t1, t2, r1, r2, s1, s2; - - /* Run the below code for Cortex-M0 */ + float32_t t1, t2, r1, r2, s1, s2; /* Initializations for the first stage */ n2 = fftLen; @@ -1203,7 +1194,7 @@ float32_t onebyfftLen) pSrc[(2U * i3) + 1U] = s2 * onebyfftLen; } -#endif /* #if defined (ARM_MATH_DSP) */ +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ } |