1 files changed, 165 insertions, 0 deletions
diff --git a/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_conj_f16.c b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_conj_f16.c
new file mode 100755
index 0000000..7522067
--- /dev/null
+++ b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_conj_f16.c
@@ -0,0 +1,165 @@
+/* ----------------------------------------------------------------------
+ * Project:      CMSIS DSP Library
+ * Title:        arm_cmplx_conj_f16.c
+ * Description:  Floating-point 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 "arm_compiler_specific.h"
+
+
+#include "dsp/complex_math_functions_f16.h"
+
+#if defined(ARM_FLOAT16_SUPPORTED)
+/**
+  @ingroup groupCmplxMath
+ */
+
+
+/**
+  @addtogroup cmplx_conj
+  @{
+ */
+
+/**
+  @brief         Floating-point 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
+ */
+
+#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE)
+
+ARM_DSP_ATTRIBUTE void arm_cmplx_conj_f16(
+    const float16_t * pSrc,
+    float16_t * pDst,
+    uint32_t numSamples)
+{
+    static const float16_t cmplx_conj_sign[8] = { 1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f, -1.0f };
+    uint32_t blockSize = numSamples * CMPLX_DIM;   /* loop counters */
+    uint32_t blkCnt;
+    f16x8_t vecSrc;
+    f16x8_t vecSign;
+
+    /*
+     * load sign vector
+     */
+    vecSign = *(f16x8_t *) cmplx_conj_sign;
+
+    /* Compute 4 real samples at a time */
+    blkCnt = blockSize >> 3U;
+
+    while (blkCnt > 0U)
+    {
+        vecSrc = vld1q(pSrc);
+        vst1q(pDst,vmulq(vecSrc, vecSign));
+        /*
+         * 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++;
+      *pDst++ = -(_Float16)*pSrc++;
+  
+      /* Decrement loop counter */
+      blkCnt--;
+    }
+
+}
+
+#else
+ARM_DSP_ATTRIBUTE void arm_cmplx_conj_f16(
+  const float16_t * pSrc,
+        float16_t * pDst,
+        uint32_t numSamples)
+{
+        uint32_t blkCnt;                               /* Loop counter */
+
+#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE)
+
+  /* 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++;
+    *pDst++ = -(_Float16)*pSrc++;
+
+    *pDst++ =  *pSrc++;
+    *pDst++ = -(_Float16)*pSrc++;
+
+    *pDst++ =  *pSrc++;
+    *pDst++ = -(_Float16)*pSrc++;
+
+    *pDst++ =  *pSrc++;
+    *pDst++ = -(_Float16)*pSrc++;
+
+    /* 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++;
+    *pDst++ = -(_Float16)*pSrc++;
+
+    /* Decrement loop counter */
+    blkCnt--;
+  }
+
+}
+#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
+
+/**
+  @} end of cmplx_conj group
+ */
+#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */