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Diffstat (limited to 'Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c')
-rw-r--r--Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c350
1 files changed, 148 insertions, 202 deletions
diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c
index 2a07c0c..67556e4 100644
--- a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c
+++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_sub_f32.c
@@ -1,202 +1,148 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_sub_f32.c
- * Description: Floating-point vector subtraction
- *
- * $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 BasicSub Vector Subtraction
-
- Element-by-element subtraction 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 BasicSub
- @{
- */
-
-/**
- @brief Floating-point vector subtraction.
- @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_sub_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 = vsubq(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, vsubq(vec1,vec2), p0);
- }
-
-}
-
-#else
-void arm_sub_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 */
-
- /* Subtract and then store the results in the destination buffer. */
- vec1 = vld1q_f32(pSrcA);
- vec2 = vld1q_f32(pSrcB);
- res = vsubq_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 */
-
- /* Subtract 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 */
-
- /* Subtract and store result in destination buffer. */
- *pDst++ = (*pSrcA++) - (*pSrcB++);
-
- /* Decrement loop counter */
- blkCnt--;
- }
-
-}
-#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
-
-/**
- @} end of BasicSub group
- */
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_sub_f32.c
+ * Description: Floating-point vector subtraction
+ *
+ * $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 BasicSub Vector Subtraction
+
+ Element-by-element subtraction 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 BasicSub
+ @{
+ */
+
+/**
+ @brief Floating-point vector subtraction.
+ @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
+ */
+
+void arm_sub_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)
+ float32x4_t vec1;
+ float32x4_t vec2;
+ float32x4_t res;
+
+ /* Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A - B */
+
+ /* Subtract and then store the results in the destination buffer. */
+ vec1 = vld1q_f32(pSrcA);
+ vec2 = vld1q_f32(pSrcB);
+ res = vsubq_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)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = A - B */
+
+ /* Subtract 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 */
+
+ /* Subtract and store result in destination buffer. */
+ *pDst++ = (*pSrcA++) - (*pSrcB++);
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+
+/**
+ @} end of BasicSub group
+ */
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