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Diffstat (limited to 'Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c')
-rw-r--r--Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c340
1 files changed, 132 insertions, 208 deletions
diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c
index 7043aa0..e9d027a 100644
--- a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c
+++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_abs_q31.c
@@ -1,208 +1,132 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_abs_q31.c
- * Description: Q31 vector absolute value
- *
- * $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
- */
-
-/**
- @addtogroup BasicAbs
- @{
- */
-
-/**
- @brief Q31 vector absolute value.
- @param[in] pSrc points to the input vector
- @param[out] pDst points to the output vector
- @param[in] blockSize number of samples in each vector
- @return none
-
- @par Scaling and Overflow Behavior
- The function uses saturating arithmetic.
- The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.
- */
-
-#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
-
-#include "arm_helium_utils.h"
-
-void arm_abs_q31(
- const q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* Loop counters */
- q31x4_t vecSrc;
-
- /* Compute 4 outputs at a time */
- blkCnt = blockSize >> 2;
-
- while (blkCnt > 0U)
- {
- /*
- * C = |A|
- * Calculate absolute and then store the results in the destination buffer.
- */
- vecSrc = vld1q(pSrc);
- vst1q(pDst, vqabsq(vecSrc));
- /*
- * Decrement the blockSize loop counter
- */
- blkCnt--;
- /*
- * Advance vector source and destination pointers
- */
- pSrc += 4;
- pDst += 4;
- }
- /*
- * Tail
- */
- blkCnt = blockSize & 3;
-
- if (blkCnt > 0U)
- {
- mve_pred16_t p0 = vctp32q(blkCnt);
- vecSrc = vld1q(pSrc);
- vstrwq_p(pDst, vqabsq(vecSrc), p0);
- }
-}
-
-#else
-void arm_abs_q31(
- const q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* Loop counter */
- q31_t in; /* Temporary variable */
-
-#if defined(ARM_MATH_NEON)
- int32x4_t vec1;
- int32x4_t res;
-
- /* Compute 4 outputs at a time */
- blkCnt = blockSize >> 2U;
-
- while (blkCnt > 0U)
- {
- /* C = |A| */
- /* Calculate absolute and then store the results in the destination buffer. */
-
- vec1 = vld1q_s32(pSrc);
- res = vqabsq_s32(vec1);
- vst1q_s32(pDst, res);
-
- /* Increment pointers */
- pSrc += 4;
- pDst += 4;
-
- /* Decrement the blockSize 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| */
-
- /* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
-#else
- *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
-#else
- *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
-#else
- *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
-#else
- *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
-#endif
-
- /* 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| */
-
- /* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
-#else
- *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
-#endif
-
- /* Decrement loop counter */
- blkCnt--;
- }
-
-}
-#endif /* #if defined (ARM_MATH_MVEI) */
-/**
- @} end of BasicAbs group
- */
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_abs_q31.c
+ * Description: Q31 vector absolute value
+ *
+ * $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
+ */
+
+/**
+ @addtogroup BasicAbs
+ @{
+ */
+
+/**
+ @brief Q31 vector absolute value.
+ @param[in] pSrc points to the input vector
+ @param[out] pDst points to the output vector
+ @param[in] blockSize number of samples in each vector
+ @return none
+
+ @par Scaling and Overflow Behavior
+ The function uses saturating arithmetic.
+ The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.
+ */
+
+void arm_abs_q31(
+ const q31_t * pSrc,
+ q31_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t blkCnt; /* Loop counter */
+ q31_t in; /* Temporary variable */
+
+#if defined (ARM_MATH_LOOPUNROLL)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = |A| */
+
+ /* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
+#else
+ *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
+#else
+ *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
+#else
+ *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
+#else
+ *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
+#endif
+
+ /* 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) */
+
+ while (blkCnt > 0U)
+ {
+ /* C = |A| */
+
+ /* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
+#else
+ *pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
+#endif
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+
+/**
+ @} end of BasicAbs group
+ */
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