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-rw-r--r--Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_negate_q31.c310
1 files changed, 132 insertions, 178 deletions
diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_negate_q31.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_negate_q31.c
index 3ee77ed..f01b1d9 100644
--- a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_negate_q31.c
+++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_negate_q31.c
@@ -1,178 +1,132 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_negate_q31.c
- * Description: Negates Q31 vectors
- *
- * $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 BasicNegate
- @{
- */
-
-/**
- @brief Negates the elements of a Q31 vector.
- @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) is saturated to the maximum allowable positive value 0x7FFFFFFF.
- */
-
-#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
-
-#include "arm_helium_utils.h"
-
-void arm_negate_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
- * Negate and then store the results in the destination buffer.
- */
- vecSrc = vld1q(pSrc);
- vst1q(pDst, vqnegq(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, vqnegq(vecSrc), p0);
- }
-}
-
-#else
-void arm_negate_q31(
- const q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* Loop counter */
- q31_t in; /* Temporary input variable */
-
-#if defined (ARM_MATH_LOOPUNROLL)
-
- /* Loop unrolling: Compute 4 outputs at a time */
- blkCnt = blockSize >> 2U;
-
- while (blkCnt > 0U)
- {
- /* C = -A */
-
- /* Negate and store result in destination buffer. */
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (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 */
-
- /* Negate and store result in destination buffer. */
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- /* Decrement loop counter */
- blkCnt--;
- }
-
-}
-#endif /* defined(ARM_MATH_MVEI) */
-
-/**
- @} end of BasicNegate group
- */
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_negate_q31.c
+ * Description: Negates Q31 vectors
+ *
+ * $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 BasicNegate
+ @{
+ */
+
+/**
+ @brief Negates the elements of a Q31 vector.
+ @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) is saturated to the maximum allowable positive value 0x7FFFFFFF.
+ */
+
+void arm_negate_q31(
+ const q31_t * pSrc,
+ q31_t * pDst,
+ uint32_t blockSize)
+{
+ uint32_t blkCnt; /* Loop counter */
+ q31_t in; /* Temporary input variable */
+
+#if defined (ARM_MATH_LOOPUNROLL)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ blkCnt = blockSize >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C = -A */
+
+ /* Negate and store result in destination buffer. */
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (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 */
+
+ /* Negate and store result in destination buffer. */
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ /* Decrement loop counter */
+ blkCnt--;
+ }
+
+}
+
+/**
+ @} end of BasicNegate group
+ */
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