From 5b81bc8ccbd342b8566d88fc9f17a73aec03b5b6 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Wed, 29 Jan 2025 21:34:25 -0500
Subject: initial commit
---
.../DSP/Source/BasicMathFunctions/arm_mult_f32.c | 200 +++++++++++++++++++++
1 file changed, 200 insertions(+)
create mode 100644 Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_mult_f32.c
(limited to 'Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_mult_f32.c')
diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_mult_f32.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_mult_f32.c
new file mode 100644
index 0000000..4df04e9
--- /dev/null
+++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_mult_f32.c
@@ -0,0 +1,200 @@
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_mult_f32.c
+ * Description: Floating-point vector multiplication
+ *
+ * $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/basic_math_functions.h"
+
+/**
+ @ingroup groupMath
+ */
+
+/**
+ @defgroup BasicMult Vector Multiplication
+
+ Element-by-element multiplication of two vectors.
+
+ <pre>
+ pDst[n] = pSrcA[n] * pSrcB[n], 0 <= n < blockSize.
+ </pre>
+
+ There are separate functions for floating-point, Q7, Q15, and Q31 data types.
+ */
+
+/**
+ @addtogroup BasicMult
+ @{
+ */
+
+/**
+ @brief Floating-point vector multiplication.
+ @param[in] pSrcA points to the first input vector.
+ @param[in] pSrcB points to the second input vector.
+ @param[out] pDst points to the output vector.
+ @param[in] blockSize number of samples in each vector.
+ @return none
+ */
+
+#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE)
+
+#include "arm_helium_utils.h"
+
+void arm_mult_f32(
+ const float32_t * pSrcA,
+ const float32_t * pSrcB,
+ float32_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t blkCnt; /* Loop counter */
+
+ f32x4_t vec1;
+ f32x4_t vec2;
+ f32x4_t res;
+
+ /* Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+ while (blkCnt > 0U)
+ {
+ /* C = A + B */
+
+ /* Add and then store the results in the destination buffer. */
+ vec1 = vld1q(pSrcA);
+ vec2 = vld1q(pSrcB);
+ res = vmulq(vec1, vec2);
+ vst1q(pDst, res);
+
+ /* Increment pointers */
+ pSrcA += 4;
+ pSrcB += 4;
+ pDst += 4;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Tail */
+ blkCnt = blockSize & 0x3;
+ if (blkCnt > 0U)
+ {
+ /* C = A + B */
+ mve_pred16_t p0 = vctp32q(blkCnt);
+ vec1 = vld1q(pSrcA);
+ vec2 = vld1q(pSrcB);
+ vstrwq_p(pDst, vmulq(vec1,vec2), p0);
+ }
+
+}
+
+#else
+void arm_mult_f32(
+ const float32_t * pSrcA,
+ const float32_t * pSrcB,
+ float32_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t blkCnt; /* Loop counter */
+
+#if defined(ARM_MATH_NEON) && !defined(ARM_MATH_AUTOVECTORIZE)
+ f32x4_t vec1;
+ f32x4_t vec2;
+ f32x4_t res;
+
+ /* Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * B */
+
+ /* Multiply the inputs and then store the results in the destination buffer. */
+ vec1 = vld1q_f32(pSrcA);
+ vec2 = vld1q_f32(pSrcB);
+ res = vmulq_f32(vec1, vec2);
+ vst1q_f32(pDst, res);
+
+ /* Increment pointers */
+ pSrcA += 4;
+ pSrcB += 4;
+ pDst += 4;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Tail */
+ blkCnt = blockSize & 0x3;
+
+#else
+#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * B */
+
+ /* Multiply inputs and store result in destination buffer. */
+ *pDst++ = (*pSrcA++) * (*pSrcB++);
+
+ *pDst++ = (*pSrcA++) * (*pSrcB++);
+
+ *pDst++ = (*pSrcA++) * (*pSrcB++);
+
+ *pDst++ = (*pSrcA++) * (*pSrcB++);
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+ /* Loop unrolling: Compute remaining outputs */
+ blkCnt = blockSize % 0x4U;
+
+#else
+
+ /* Initialize blkCnt with number of samples */
+ blkCnt = blockSize;
+
+#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
+#endif /* #if defined(ARM_MATH_NEON) */
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * B */
+
+ /* Multiply input and store result in destination buffer. */
+ *pDst++ = (*pSrcA++) * (*pSrcB++);
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
+
+/**
+ @} end of BasicMult group
+ */
--
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