add l476 implementationl476

1 files changed, 110 insertions, 149 deletions

diff --git a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_mean_q31.c b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_mean_q31.c
index b33ed00..7667ad8 100644
--- a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_mean_q31.c
+++ b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_mean_q31.c
@@ -1,149 +1,110 @@
-/* ----------------------------------------------------------------------
- * Project:      CMSIS DSP Library
- * Title:        arm_mean_q31.c
- * Description:  Mean value of a Q31 vector
- *
- * $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/statistics_functions.h"
-
-/**
-  @ingroup groupStats
- */
-
-/**
-  @addtogroup mean
-  @{
- */
-
-/**
-  @brief         Mean value of a Q31 vector.
-  @param[in]     pSrc       points to the input vector
-  @param[in]     blockSize  number of samples in input vector
-  @param[out]    pResult    mean value returned here
-  @return        none
-
-  @par           Scaling and Overflow Behavior
-                   The function is implemented using a 64-bit internal accumulator.
-                   The input is represented in 1.31 format and is accumulated in a 64-bit
-                   accumulator in 33.31 format.
-                   There is no risk of internal overflow with this approach, and the
-                   full precision of intermediate result is preserved.
-                   Finally, the accumulator is truncated to yield a result of 1.31 format.
- */
-#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
-void arm_mean_q31(
-  const q31_t * pSrc,
-        uint32_t blockSize,
-        q31_t * pResult)
-{
-    uint32_t  blkCnt;           /* loop counters */
-    q31x4_t vecSrc;
-    q63_t     sum = 0LL;
-
-
-    /* Compute 4 outputs at a time */
-    blkCnt = blockSize >> 2U;
-    while (blkCnt > 0U)
-    {
-
-        vecSrc = vldrwq_s32(pSrc);
-        /*
-         * sum lanes
-         */
-        sum = vaddlvaq(sum, vecSrc);
-
-        blkCnt --;
-        pSrc += 4;
-    }
-
-    /* Tail */
-    blkCnt = blockSize & 0x3;
-
-    while (blkCnt > 0U)
-    {
-      /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
-      sum += *pSrc++;
-      blkCnt --;
-    }
-
-    *pResult = arm_div_q63_to_q31(sum, blockSize);
-}
-#else
-void arm_mean_q31(
-  const q31_t * pSrc,
-        uint32_t blockSize,
-        q31_t * pResult)
-{
-        uint32_t blkCnt;                               /* Loop counter */
-        q63_t sum = 0;                                 /* Temporary result storage */
-
-#if defined (ARM_MATH_LOOPUNROLL)
-
-  /* Loop unrolling: Compute 4 outputs at a time */
-  blkCnt = blockSize >> 2U;
-
-  while (blkCnt > 0U)
-  {
-    /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
-    sum += *pSrc++;
-
-    sum += *pSrc++;
-
-    sum += *pSrc++;
-
-    sum += *pSrc++;
-
-    /* Decrement the 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) */
-
-  while (blkCnt > 0U)
-  {
-    /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
-    sum += *pSrc++;
-
-    /* Decrement loop counter */
-    blkCnt--;
-  }
-
-  /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) / blockSize  */
-  /* Store result to destination */
-  *pResult = (q31_t) (sum / blockSize);
-}
-#endif /* defined(ARM_MATH_MVEI) */
-
-/**
-  @} end of mean group
- */
+/* ----------------------------------------------------------------------

+ * Project:      CMSIS DSP Library

+ * Title:        arm_mean_q31.c

+ * Description:  Mean value of a Q31 vector

+ *

+ * $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 groupStats

+ */

+

+/**

+  @addtogroup mean

+  @{

+ */

+

+/**

+  @brief         Mean value of a Q31 vector.

+  @param[in]     pSrc       points to the input vector

+  @param[in]     blockSize  number of samples in input vector

+  @param[out]    pResult    mean value returned here

+  @return        none

+

+  @par           Scaling and Overflow Behavior

+                   The function is implemented using a 64-bit internal accumulator.

+                   The input is represented in 1.31 format and is accumulated in a 64-bit

+                   accumulator in 33.31 format.

+                   There is no risk of internal overflow with this approach, and the

+                   full precision of intermediate result is preserved.

+                   Finally, the accumulator is truncated to yield a result of 1.31 format.

+ */

+

+void arm_mean_q31(

+  const q31_t * pSrc,

+        uint32_t blockSize,

+        q31_t * pResult)

+{

+        uint32_t blkCnt;                               /* Loop counter */

+        q63_t sum = 0;                                 /* Temporary result storage */

+

+#if defined (ARM_MATH_LOOPUNROLL)

+

+  /* Loop unrolling: Compute 4 outputs at a time */

+  blkCnt = blockSize >> 2U;

+

+  while (blkCnt > 0U)

+  {

+    /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */

+    sum += *pSrc++;

+

+    sum += *pSrc++;

+

+    sum += *pSrc++;

+

+    sum += *pSrc++;

+

+    /* Decrement the 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) */

+

+  while (blkCnt > 0U)

+  {

+    /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */

+    sum += *pSrc++;

+

+    /* Decrement loop counter */

+    blkCnt--;

+  }

+

+  /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) / blockSize  */

+  /* Store result to destination */

+  *pResult = (q31_t) (sum / blockSize);

+}

+

+/**

+  @} end of mean group

+ */