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-rw-r--r--Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_f32.c375
1 files changed, 159 insertions, 216 deletions
diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_f32.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_f32.c
index 59bc813..38327cc 100644
--- a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_f32.c
+++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_scale_f32.c
@@ -1,216 +1,159 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_scale_f32.c
- * Description: Multiplies a floating-point vector by a scalar
- *
- * $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 BasicScale Vector Scale
-
- Multiply a vector by a scalar value. For floating-point data, the algorithm used is:
-
- <pre>
- pDst[n] = pSrc[n] * scale, 0 <= n < blockSize.
- </pre>
-
- In the fixed-point Q7, Q15, and Q31 functions, <code>scale</code> is represented by
- a fractional multiplication <code>scaleFract</code> and an arithmetic shift <code>shift</code>.
- The shift allows the gain of the scaling operation to exceed 1.0.
- The algorithm used with fixed-point data is:
-
- <pre>
- pDst[n] = (pSrc[n] * scaleFract) << shift, 0 <= n < blockSize.
- </pre>
-
- The overall scale factor applied to the fixed-point data is
- <pre>
- scale = scaleFract * 2^shift.
- </pre>
-
- The functions support in-place computation allowing the source and destination
- pointers to reference the same memory buffer.
- */
-
-/**
- @addtogroup BasicScale
- @{
- */
-
-/**
- @brief Multiplies a floating-point vector by a scalar.
- @param[in] pSrc points to the input vector
- @param[in] scale scale factor to be applied
- @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_scale_f32(
- const float32_t * pSrc,
- float32_t scale,
- float32_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* Loop counter */
-
- f32x4_t vec1;
- f32x4_t res;
-
- /* Compute 4 outputs at a time */
- blkCnt = blockSize >> 2U;
-
- while (blkCnt > 0U)
- {
- /* C = A + offset */
-
- /* Add offset and then store the results in the destination buffer. */
- vec1 = vld1q(pSrc);
- res = vmulq(vec1,scale);
- vst1q(pDst, res);
-
- /* Increment pointers */
- pSrc += 4;
- pDst += 4;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Tail */
- blkCnt = blockSize & 0x3;
-
- if (blkCnt > 0U)
- {
- mve_pred16_t p0 = vctp32q(blkCnt);
- vec1 = vld1q((float32_t const *) pSrc);
- vstrwq_p(pDst, vmulq(vec1, scale), p0);
- }
-
-
-}
-
-#else
-void arm_scale_f32(
- const float32_t *pSrc,
- float32_t scale,
- float32_t *pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* Loop counter */
-#if defined(ARM_MATH_NEON_EXPERIMENTAL)
- f32x4_t vec1;
- f32x4_t res;
-
- /* Compute 4 outputs at a time */
- blkCnt = blockSize >> 2U;
-
- while (blkCnt > 0U)
- {
- /* C = A * scale */
-
- /* Scale the input and then store the results in the destination buffer. */
- vec1 = vld1q_f32(pSrc);
- res = vmulq_f32(vec1, vdupq_n_f32(scale));
- vst1q_f32(pDst, res);
-
- /* Increment pointers */
- pSrc += 4;
- pDst += 4;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Tail */
- blkCnt = blockSize & 0x3;
-
-#else
-#if defined (ARM_MATH_LOOPUNROLL)
-
- /* Loop unrolling: Compute 4 outputs at a time */
- blkCnt = blockSize >> 2U;
-
- while (blkCnt > 0U)
- {
- float32_t in1, in2, in3, in4;
-
- /* C = A * scale */
-
- /* Scale input and store result in destination buffer. */
- in1 = (*pSrc++) * scale;
-
- in2 = (*pSrc++) * scale;
-
- in3 = (*pSrc++) * scale;
-
- in4 = (*pSrc++) * scale;
-
- *pDst++ = in1;
- *pDst++ = in2;
- *pDst++ = in3;
- *pDst++ = in4;
-
- /* 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_EXPERIMENTAL) */
-
- while (blkCnt > 0U)
- {
- /* C = A * scale */
-
- /* Scale input and store result in destination buffer. */
- *pDst++ = (*pSrc++) * scale;
-
- /* Decrement loop counter */
- blkCnt--;
- }
-
-}
-#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
-
-/**
- @} end of BasicScale group
- */
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_scale_f32.c
+ * Description: Multiplies a floating-point vector by a scalar
+ *
+ * $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 groupMath
+ */
+
+/**
+ @defgroup BasicScale Vector Scale
+
+ Multiply a vector by a scalar value. For floating-point data, the algorithm used is:
+
+ <pre>
+ pDst[n] = pSrc[n] * scale, 0 <= n < blockSize.
+ </pre>
+
+ In the fixed-point Q7, Q15, and Q31 functions, <code>scale</code> is represented by
+ a fractional multiplication <code>scaleFract</code> and an arithmetic shift <code>shift</code>.
+ The shift allows the gain of the scaling operation to exceed 1.0.
+ The algorithm used with fixed-point data is:
+
+ <pre>
+ pDst[n] = (pSrc[n] * scaleFract) << shift, 0 <= n < blockSize.
+ </pre>
+
+ The overall scale factor applied to the fixed-point data is
+ <pre>
+ scale = scaleFract * 2^shift.
+ </pre>
+
+ The functions support in-place computation allowing the source and destination
+ pointers to reference the same memory buffer.
+ */
+
+/**
+ @addtogroup BasicScale
+ @{
+ */
+
+/**
+ @brief Multiplies a floating-point vector by a scalar.
+ @param[in] pSrc points to the input vector
+ @param[in] scale scale factor to be applied
+ @param[out] pDst points to the output vector
+ @param[in] blockSize number of samples in each vector
+ @return none
+ */
+
+void arm_scale_f32(
+ const float32_t *pSrc,
+ float32_t scale,
+ float32_t *pDst,
+ uint32_t blockSize)
+{
+ uint32_t blkCnt; /* Loop counter */
+#if defined(ARM_MATH_NEON_EXPERIMENTAL)
+ float32x4_t vec1;
+ float32x4_t res;
+
+ /* Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * scale */
+
+ /* Scale the input and then store the results in the destination buffer. */
+ vec1 = vld1q_f32(pSrc);
+ res = vmulq_f32(vec1, vdupq_n_f32(scale));
+ vst1q_f32(pDst, res);
+
+ /* Increment pointers */
+ pSrc += 4;
+ pDst += 4;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Tail */
+ blkCnt = blockSize & 0x3;
+
+#else
+#if defined (ARM_MATH_LOOPUNROLL)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * scale */
+
+ /* Scale input and store result in destination buffer. */
+ *pDst++ = (*pSrc++) * scale;
+
+ *pDst++ = (*pSrc++) * scale;
+
+ *pDst++ = (*pSrc++) * scale;
+
+ *pDst++ = (*pSrc++) * scale;
+
+ /* 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_EXPERIMENTAL) */
+
+ while (blkCnt > 0U)
+ {
+ /* C = A * scale */
+
+ /* Scale input and store result in destination buffer. */
+ *pDst++ = (*pSrc++) * scale;
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+
+/**
+ @} end of BasicScale group
+ */
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