diff options
author | Clyne Sullivan <clyne@bitgloo.com> | 2025-02-02 11:26:53 -0500 |
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committer | Clyne Sullivan <clyne@bitgloo.com> | 2025-02-02 11:26:53 -0500 |
commit | 9c59a184dba820975e5da6fcd5d248aee87f7e2f (patch) | |
tree | 6b30516adc2ba0f7b0a8f5fb5d2e6966c03108d8 /Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c | |
parent | d09f4289b5788d6a8b34e424841292e2b8529e56 (diff) |
add l476 implementationl476
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c')
-rw-r--r-- | Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c | 461 |
1 files changed, 188 insertions, 273 deletions
diff --git a/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c index aac6fba..128ecb9 100644 --- a/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c +++ b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c @@ -1,273 +1,188 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_cmplx_mag_f32.c - * Description: Floating-point complex magnitude - * - * $Date: 23 April 2021 - * $Revision: V1.9.0 - * - * Target Processor: Cortex-M and Cortex-A cores - * -------------------------------------------------------------------- */ -/* - * Copyright (C) 2010-2021 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 "dsp/complex_math_functions.h" - -/** - @ingroup groupCmplxMath - */ - -/** - @defgroup cmplx_mag Complex Magnitude - - Computes the magnitude of the elements of a complex data vector. - - The <code>pSrc</code> points to the source data and - <code>pDst</code> points to the where the result should be written. - <code>numSamples</code> specifies the number of complex samples - in the input array and the data is stored in an interleaved fashion - (real, imag, real, imag, ...). - The input array has a total of <code>2*numSamples</code> values; - the output array has a total of <code>numSamples</code> values. - - The underlying algorithm is used: - - <pre> - for (n = 0; n < numSamples; n++) { - pDst[n] = sqrt(pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2); - } - </pre> - - There are separate functions for floating-point, Q15, and Q31 data types. - */ - -/** - @addtogroup cmplx_mag - @{ - */ - -/** - @brief Floating-point complex magnitude. - @param[in] pSrc points to input vector - @param[out] pDst points to output vector - @param[in] numSamples number of samples in each vector - @return none - */ - -#if defined(ARM_MATH_NEON) && !defined(ARM_MATH_AUTOVECTORIZE) -#include "arm_vec_math.h" -#endif - -#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) - -#include "arm_helium_utils.h" - - -void arm_cmplx_mag_f32( - const float32_t * pSrc, - float32_t * pDst, - uint32_t numSamples) -{ - int32_t blockSize = numSamples; /* loop counters */ - uint32_t blkCnt; /* loop counters */ - f32x4x2_t vecSrc; - f32x4_t sum; - float32_t real, imag; /* Temporary variables to hold input values */ - - /* Compute 4 complex samples at a time */ - blkCnt = blockSize >> 2; - while (blkCnt > 0U) - { - q31x4_t newtonStartVec; - f32x4_t sumHalf, invSqrt; - - vecSrc = vld2q(pSrc); - pSrc += 8; - sum = vmulq(vecSrc.val[0], vecSrc.val[0]); - sum = vfmaq(sum, vecSrc.val[1], vecSrc.val[1]); - - /* - * inlined Fast SQRT using inverse SQRT newton-raphson method - */ - - /* compute initial value */ - newtonStartVec = vdupq_n_s32(INVSQRT_MAGIC_F32) - vshrq((q31x4_t) sum, 1); - sumHalf = sum * 0.5f; - /* - * compute 3 x iterations - * - * The more iterations, the more accuracy. - * If you need to trade a bit of accuracy for more performance, - * you can comment out the 3rd use of the macro. - */ - INVSQRT_NEWTON_MVE_F32(invSqrt, sumHalf, (f32x4_t) newtonStartVec); - INVSQRT_NEWTON_MVE_F32(invSqrt, sumHalf, invSqrt); - INVSQRT_NEWTON_MVE_F32(invSqrt, sumHalf, invSqrt); - /* - * set negative values to 0 - */ - invSqrt = vdupq_m(invSqrt, 0.0f, vcmpltq(invSqrt, 0.0f)); - /* - * sqrt(x) = x * invSqrt(x) - */ - sum = vmulq(sum, invSqrt); - vst1q(pDst, sum); - pDst += 4; - /* - * Decrement the blockSize loop counter - */ - blkCnt--; - } - /* - * tail - */ - blkCnt = blockSize & 3; - while (blkCnt > 0U) - { - /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ - - real = *pSrc++; - imag = *pSrc++; - - /* store result in destination buffer. */ - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - /* Decrement loop counter */ - blkCnt--; - } -} - -#else -void arm_cmplx_mag_f32( - const float32_t * pSrc, - float32_t * pDst, - uint32_t numSamples) -{ - uint32_t blkCnt; /* loop counter */ - float32_t real, imag; /* Temporary variables to hold input values */ - -#if defined(ARM_MATH_NEON) && !defined(ARM_MATH_AUTOVECTORIZE) - - float32x4x2_t vecA; - float32x4_t vRealA; - float32x4_t vImagA; - float32x4_t vMagSqA; - - float32x4x2_t vecB; - float32x4_t vRealB; - float32x4_t vImagB; - float32x4_t vMagSqB; - - /* Loop unrolling: Compute 8 outputs at a time */ - blkCnt = numSamples >> 3; - - while (blkCnt > 0U) - { - /* out = sqrt((real * real) + (imag * imag)) */ - - vecA = vld2q_f32(pSrc); - pSrc += 8; - - vecB = vld2q_f32(pSrc); - pSrc += 8; - - vRealA = vmulq_f32(vecA.val[0], vecA.val[0]); - vImagA = vmulq_f32(vecA.val[1], vecA.val[1]); - vMagSqA = vaddq_f32(vRealA, vImagA); - - vRealB = vmulq_f32(vecB.val[0], vecB.val[0]); - vImagB = vmulq_f32(vecB.val[1], vecB.val[1]); - vMagSqB = vaddq_f32(vRealB, vImagB); - - /* Store the result in the destination buffer. */ - vst1q_f32(pDst, __arm_vec_sqrt_f32_neon(vMagSqA)); - pDst += 4; - - vst1q_f32(pDst, __arm_vec_sqrt_f32_neon(vMagSqB)); - pDst += 4; - - /* Decrement the loop counter */ - blkCnt--; - } - - blkCnt = numSamples & 7; - -#else - -#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE) - - /* Loop unrolling: Compute 4 outputs at a time */ - blkCnt = numSamples >> 2U; - - while (blkCnt > 0U) - { - /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ - - real = *pSrc++; - imag = *pSrc++; - - /* store result in destination buffer. */ - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - real = *pSrc++; - imag = *pSrc++; - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - real = *pSrc++; - imag = *pSrc++; - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - real = *pSrc++; - imag = *pSrc++; - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - /* Decrement loop counter */ - blkCnt--; - } - - /* Loop unrolling: Compute remaining outputs */ - blkCnt = numSamples % 0x4U; - -#else - - /* Initialize blkCnt with number of samples */ - blkCnt = numSamples; - -#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ -#endif /* #if defined(ARM_MATH_NEON) */ - - while (blkCnt > 0U) - { - /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ - - real = *pSrc++; - imag = *pSrc++; - - /* store result in destination buffer. */ - arm_sqrt_f32((real * real) + (imag * imag), pDst++); - - /* Decrement loop counter */ - blkCnt--; - } - -} -#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */ - -/** - @} end of cmplx_mag group - */ +/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_cmplx_mag_f32.c
+ * Description: Floating-point complex magnitude
+ *
+ * $Date: 18. March 2019
+ * $Revision: V1.6.0
+ *
+ * Target Processor: Cortex-M cores
+ * -------------------------------------------------------------------- */
+/*
+ * Copyright (C) 2010-2019 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"
+
+/**
+ @ingroup groupCmplxMath
+ */
+
+/**
+ @defgroup cmplx_mag Complex Magnitude
+
+ Computes the magnitude of the elements of a complex data vector.
+
+ The <code>pSrc</code> points to the source data and
+ <code>pDst</code> points to the where the result should be written.
+ <code>numSamples</code> specifies the number of complex samples
+ in the input array and the data is stored in an interleaved fashion
+ (real, imag, real, imag, ...).
+ The input array has a total of <code>2*numSamples</code> values;
+ the output array has a total of <code>numSamples</code> values.
+
+ The underlying algorithm is used:
+
+ <pre>
+ for (n = 0; n < numSamples; n++) {
+ pDst[n] = sqrt(pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2);
+ }
+ </pre>
+
+ There are separate functions for floating-point, Q15, and Q31 data types.
+ */
+
+/**
+ @addtogroup cmplx_mag
+ @{
+ */
+
+/**
+ @brief Floating-point complex magnitude.
+ @param[in] pSrc points to input vector
+ @param[out] pDst points to output vector
+ @param[in] numSamples number of samples in each vector
+ @return none
+ */
+
+void arm_cmplx_mag_f32(
+ const float32_t * pSrc,
+ float32_t * pDst,
+ uint32_t numSamples)
+{
+ uint32_t blkCnt; /* loop counter */
+ float32_t real, imag; /* Temporary variables to hold input values */
+
+#if defined(ARM_MATH_NEON)
+
+ float32x4x2_t vecA;
+ float32x4_t vRealA;
+ float32x4_t vImagA;
+ float32x4_t vMagSqA;
+
+ float32x4x2_t vecB;
+ float32x4_t vRealB;
+ float32x4_t vImagB;
+ float32x4_t vMagSqB;
+
+ /* Loop unrolling: Compute 8 outputs at a time */
+ blkCnt = numSamples >> 3;
+
+ while (blkCnt > 0U)
+ {
+ /* out = sqrt((real * real) + (imag * imag)) */
+
+ vecA = vld2q_f32(pSrc);
+ pSrc += 8;
+
+ vecB = vld2q_f32(pSrc);
+ pSrc += 8;
+
+ vRealA = vmulq_f32(vecA.val[0], vecA.val[0]);
+ vImagA = vmulq_f32(vecA.val[1], vecA.val[1]);
+ vMagSqA = vaddq_f32(vRealA, vImagA);
+
+ vRealB = vmulq_f32(vecB.val[0], vecB.val[0]);
+ vImagB = vmulq_f32(vecB.val[1], vecB.val[1]);
+ vMagSqB = vaddq_f32(vRealB, vImagB);
+
+ /* Store the result in the destination buffer. */
+ vst1q_f32(pDst, __arm_vec_sqrt_f32_neon(vMagSqA));
+ pDst += 4;
+
+ vst1q_f32(pDst, __arm_vec_sqrt_f32_neon(vMagSqB));
+ pDst += 4;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ blkCnt = numSamples & 7;
+
+#else
+
+#if defined (ARM_MATH_LOOPUNROLL)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = numSamples >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */
+
+ real = *pSrc++;
+ imag = *pSrc++;
+
+ /* store result in destination buffer. */
+ arm_sqrt_f32((real * real) + (imag * imag), pDst++);
+
+ real = *pSrc++;
+ imag = *pSrc++;
+ arm_sqrt_f32((real * real) + (imag * imag), pDst++);
+
+ real = *pSrc++;
+ imag = *pSrc++;
+ arm_sqrt_f32((real * real) + (imag * imag), pDst++);
+
+ real = *pSrc++;
+ imag = *pSrc++;
+ arm_sqrt_f32((real * real) + (imag * imag), pDst++);
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+ /* Loop unrolling: Compute remaining outputs */
+ blkCnt = numSamples % 0x4U;
+
+#else
+
+ /* Initialize blkCnt with number of samples */
+ blkCnt = numSamples;
+
+#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
+#endif /* #if defined(ARM_MATH_NEON) */
+
+ while (blkCnt > 0U)
+ {
+ /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */
+
+ real = *pSrc++;
+ imag = *pSrc++;
+
+ /* store result in destination buffer. */
+ arm_sqrt_f32((real * real) + (imag * imag), pDst++);
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+
+/**
+ @} end of cmplx_mag group
+ */
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