diff options
Diffstat (limited to 'fw/cdc-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c')
| -rw-r--r-- | fw/cdc-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/fw/cdc-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c new file mode 100644 index 0000000..6f45804 --- /dev/null +++ b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c @@ -0,0 +1,213 @@ +/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_cmplx_mult_real_f32.c
+ * Description: Floating-point complex by real multiplication
+ *
+ * $Date: 27. January 2017
+ * $Revision: V.1.5.1
+ *
+ * Target Processor: Cortex-M cores
+ * -------------------------------------------------------------------- */
+/*
+ * Copyright (C) 2010-2017 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
+ */
+
+/**
+ * @defgroup CmplxByRealMult Complex-by-Real Multiplication
+ *
+ * Multiplies a complex vector by a real vector and generates a complex result.
+ * The data in the complex arrays is stored in an interleaved fashion
+ * (real, imag, real, imag, ...).
+ * The parameter <code>numSamples</code> represents the number of complex
+ * samples processed. The complex arrays have a total of <code>2*numSamples</code>
+ * real values while the real array has a total of <code>numSamples</code>
+ * real values.
+ *
+ * The underlying algorithm is used:
+ *
+ * <pre>
+ * for(n=0; n<numSamples; n++) {
+ * pCmplxDst[(2*n)+0] = pSrcCmplx[(2*n)+0] * pSrcReal[n];
+ * pCmplxDst[(2*n)+1] = pSrcCmplx[(2*n)+1] * pSrcReal[n];
+ * }
+ * </pre>
+ *
+ * There are separate functions for floating-point, Q15, and Q31 data types.
+ */
+
+/**
+ * @addtogroup CmplxByRealMult
+ * @{
+ */
+
+
+/**
+ * @brief Floating-point complex-by-real multiplication
+ * @param[in] *pSrcCmplx points to the complex input vector
+ * @param[in] *pSrcReal points to the real input vector
+ * @param[out] *pCmplxDst points to the complex output vector
+ * @param[in] numSamples number of samples in each vector
+ * @return none.
+ */
+
+void arm_cmplx_mult_real_f32(
+ float32_t * pSrcCmplx,
+ float32_t * pSrcReal,
+ float32_t * pCmplxDst,
+ uint32_t numSamples)
+{
+ float32_t in; /* Temporary variable to store input value */
+ uint32_t blkCnt; /* loop counters */
+
+#if defined (ARM_MATH_DSP)
+
+ /* Run the below code for Cortex-M4 and Cortex-M3 */
+ float32_t inA1, inA2, inA3, inA4; /* Temporary variables to hold input data */
+ float32_t inA5, inA6, inA7, inA8; /* Temporary variables to hold input data */
+ float32_t inB1, inB2, inB3, inB4; /* Temporary variables to hold input data */
+ float32_t out1, out2, out3, out4; /* Temporary variables to hold output data */
+ float32_t out5, out6, out7, out8; /* Temporary variables to hold output data */
+
+ /* loop Unrolling */
+ blkCnt = numSamples >> 2U;
+
+ /* First part of the processing with loop unrolling. Compute 4 outputs at a time.
+ ** a second loop below computes the remaining 1 to 3 samples. */
+ while (blkCnt > 0U)
+ {
+ /* C[2 * i] = A[2 * i] * B[i]. */
+ /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */
+ /* read input from complex input buffer */
+ inA1 = pSrcCmplx[0];
+ inA2 = pSrcCmplx[1];
+ /* read input from real input buffer */
+ inB1 = pSrcReal[0];
+
+ /* read input from complex input buffer */
+ inA3 = pSrcCmplx[2];
+
+ /* multiply complex buffer real input with real buffer input */
+ out1 = inA1 * inB1;
+
+ /* read input from complex input buffer */
+ inA4 = pSrcCmplx[3];
+
+ /* multiply complex buffer imaginary input with real buffer input */
+ out2 = inA2 * inB1;
+
+ /* read input from real input buffer */
+ inB2 = pSrcReal[1];
+ /* read input from complex input buffer */
+ inA5 = pSrcCmplx[4];
+
+ /* multiply complex buffer real input with real buffer input */
+ out3 = inA3 * inB2;
+
+ /* read input from complex input buffer */
+ inA6 = pSrcCmplx[5];
+ /* read input from real input buffer */
+ inB3 = pSrcReal[2];
+
+ /* multiply complex buffer imaginary input with real buffer input */
+ out4 = inA4 * inB2;
+
+ /* read input from complex input buffer */
+ inA7 = pSrcCmplx[6];
+
+ /* multiply complex buffer real input with real buffer input */
+ out5 = inA5 * inB3;
+
+ /* read input from complex input buffer */
+ inA8 = pSrcCmplx[7];
+
+ /* multiply complex buffer imaginary input with real buffer input */
+ out6 = inA6 * inB3;
+
+ /* read input from real input buffer */
+ inB4 = pSrcReal[3];
+
+ /* store result to destination bufer */
+ pCmplxDst[0] = out1;
+
+ /* multiply complex buffer real input with real buffer input */
+ out7 = inA7 * inB4;
+
+ /* store result to destination bufer */
+ pCmplxDst[1] = out2;
+
+ /* multiply complex buffer imaginary input with real buffer input */
+ out8 = inA8 * inB4;
+
+ /* store result to destination bufer */
+ pCmplxDst[2] = out3;
+ pCmplxDst[3] = out4;
+ pCmplxDst[4] = out5;
+
+ /* incremnet complex input buffer by 8 to process next samples */
+ pSrcCmplx += 8U;
+
+ /* store result to destination bufer */
+ pCmplxDst[5] = out6;
+
+ /* increment real input buffer by 4 to process next samples */
+ pSrcReal += 4U;
+
+ /* store result to destination bufer */
+ pCmplxDst[6] = out7;
+ pCmplxDst[7] = out8;
+
+ /* increment destination buffer by 8 to process next sampels */
+ pCmplxDst += 8U;
+
+ /* Decrement the numSamples loop counter */
+ blkCnt--;
+ }
+
+ /* If the numSamples is not a multiple of 4, compute any remaining output samples here.
+ ** No loop unrolling is used. */
+ blkCnt = numSamples % 0x4U;
+
+#else
+
+ /* Run the below code for Cortex-M0 */
+ blkCnt = numSamples;
+
+#endif /* #if defined (ARM_MATH_DSP) */
+
+ while (blkCnt > 0U)
+ {
+ /* C[2 * i] = A[2 * i] * B[i]. */
+ /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */
+ in = *pSrcReal++;
+ /* store the result in the destination buffer. */
+ *pCmplxDst++ = (*pSrcCmplx++) * (in);
+ *pCmplxDst++ = (*pSrcCmplx++) * (in);
+
+ /* Decrement the numSamples loop counter */
+ blkCnt--;
+ }
+}
+
+/**
+ * @} end of CmplxByRealMult group
+ */
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