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Diffstat (limited to 'Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c')
-rw-r--r--Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c330
1 files changed, 137 insertions, 193 deletions
diff --git a/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c
index ec1b5b7..c3cbdbf 100644
--- a/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c
+++ b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_conj_q31.c
@@ -1,193 +1,137 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_cmplx_conj_q31.c
- * Description: Q31 complex conjugate
- *
- * $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/complex_math_functions.h"
-
-/**
- @ingroup groupCmplxMath
- */
-
-/**
- @addtogroup cmplx_conj
- @{
- */
-
-/**
- @brief Q31 complex conjugate.
- @param[in] pSrc points to the input vector
- @param[out] pDst points to the output vector
- @param[in] numSamples 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)
-
-void arm_cmplx_conj_q31(
- const q31_t * pSrc,
- q31_t * pDst,
- uint32_t numSamples)
-{
-
- uint32_t blockSize = numSamples * CMPLX_DIM; /* loop counters */
- uint32_t blkCnt;
- q31x4x2_t vecSrc;
- q31_t in; /* Temporary input variable */
- q31x4_t zero;
-
- zero = vdupq_n_s32(0);
-
-
- /* Compute 4 real samples at a time */
- blkCnt = blockSize >> 3U;
-
- while (blkCnt > 0U)
- {
-
- vecSrc = vld2q(pSrc);
- vecSrc.val[1] = vqsubq(zero, vecSrc.val[1]);
- vst2q(pDst,vecSrc);
- /*
- * Decrement the blkCnt loop counter
- * Advance vector source and destination pointers
- */
- pSrc += 8;
- pDst += 8;
- blkCnt --;
- }
-
- /* Tail */
- blkCnt = (blockSize & 0x7) >> 1;
-
- while (blkCnt > 0U)
- {
- /* C[0] + jC[1] = A[0]+ j(-1)A[1] */
-
- /* Calculate Complex Conjugate and store result in destination buffer. */
- *pDst++ = *pSrc++;
- in = *pSrc++;
- *pDst++ = __QSUB(0, in);
-
- /* Decrement loop counter */
- blkCnt--;
- }
-
-
-}
-#else
-
-void arm_cmplx_conj_q31(
- const q31_t * pSrc,
- q31_t * pDst,
- uint32_t numSamples)
-{
- 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 = numSamples >> 2U;
-
- while (blkCnt > 0U)
- {
- /* C[0] + jC[1] = A[0]+ j(-1)A[1] */
-
- /* Calculate Complex Conjugate and store result in destination buffer. */
- *pDst++ = *pSrc++;
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- *pDst++ = *pSrc++;
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- *pDst++ = *pSrc++;
- in = *pSrc++;
-#if defined (ARM_MATH_DSP)
- *pDst++ = __QSUB(0, in);
-#else
- *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
-#endif
-
- *pDst++ = *pSrc++;
- 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 = numSamples % 0x4U;
-
-#else
-
- /* Initialize blkCnt with number of samples */
- blkCnt = numSamples;
-
-#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
-
- while (blkCnt > 0U)
- {
- /* C[0] + jC[1] = A[0]+ j(-1)A[1] */
-
- /* Calculate Complex Conjugate and store result in destination buffer. */
- *pDst++ = *pSrc++;
- 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 cmplx_conj group
- */
+/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_cmplx_conj_q31.c
+ * Description: Q31 complex conjugate
+ *
+ * $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 groupCmplxMath
+ */
+
+/**
+ @addtogroup cmplx_conj
+ @{
+ */
+
+/**
+ @brief Q31 complex conjugate.
+ @param[in] pSrc points to the input vector
+ @param[out] pDst points to the output vector
+ @param[in] numSamples 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_cmplx_conj_q31(
+ const q31_t * pSrc,
+ q31_t * pDst,
+ uint32_t numSamples)
+{
+ 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 = numSamples >> 2U;
+
+ while (blkCnt > 0U)
+ {
+ /* C[0] + jC[1] = A[0]+ j(-1)A[1] */
+
+ /* Calculate Complex Conjugate and store result in destination buffer. */
+ *pDst++ = *pSrc++;
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ *pDst++ = *pSrc++;
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ *pDst++ = *pSrc++;
+ in = *pSrc++;
+#if defined (ARM_MATH_DSP)
+ *pDst++ = __QSUB(0, in);
+#else
+ *pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
+#endif
+
+ *pDst++ = *pSrc++;
+ 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 = numSamples % 0x4U;
+
+#else
+
+ /* Initialize blkCnt with number of samples */
+ blkCnt = numSamples;
+
+#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
+
+ while (blkCnt > 0U)
+ {
+ /* C[0] + jC[1] = A[0]+ j(-1)A[1] */
+
+ /* Calculate Complex Conjugate and store result in destination buffer. */
+ *pDst++ = *pSrc++;
+ 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 cmplx_conj group
+ */
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