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Diffstat (limited to 'Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c')
| -rwxr-xr-x | Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c new file mode 100755 index 0000000..4c63f06 --- /dev/null +++ b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c @@ -0,0 +1,223 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_cmplx_mag_squared_q15.c + * Description: Q15 complex magnitude squared + * + * $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.h" + +/** + @ingroup groupCmplxMath + */ + +/** + @addtogroup cmplx_mag_squared + @{ + */ + +/** + @brief Q15 complex magnitude squared. + @param[in] pSrc points to input vector + @param[out] pDst points to output vector + @param[in] numSamples number of samples in each vector + + @par Scaling and Overflow Behavior + The function implements 1.15 by 1.15 multiplications and finally output is converted into 3.13 format. + */ + +#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE) + +ARM_DSP_ATTRIBUTE void arm_cmplx_mag_squared_q15( + const q15_t * pSrc, + q15_t * pDst, + uint32_t numSamples) +{ + int32_t blockSize = numSamples; /* loop counters */ + uint32_t blkCnt; /* loop counters */ + q31_t in; + q31_t acc0; /* Accumulators */ + q15x8x2_t vecSrc; + q15x8_t vReal, vImag; + q15x8_t vMagSq; + + + blkCnt = blockSize >> 3; + while (blkCnt > 0U) + { + vecSrc = vld2q(pSrc); + vReal = vmulhq(vecSrc.val[0], vecSrc.val[0]); + vImag = vmulhq(vecSrc.val[1], vecSrc.val[1]); + vMagSq = vqaddq(vReal, vImag); + vMagSq = vshrq(vMagSq, 1); + + vst1q(pDst, vMagSq); + + pSrc += 16; + pDst += 8; + /* + * Decrement the blkCnt loop counter + * Advance vector source and destination pointers + */ + blkCnt --; + } + + /* + * tail + */ + blkCnt = blockSize & 7; + while (blkCnt > 0U) + { + /* C[0] = (A[0] * A[0] + A[1] * A[1]) */ + + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + + /* store result in 3.13 format in destination buffer. */ + *pDst++ = (q15_t) (acc0 >> 17); + + + /* Decrement loop counter */ + blkCnt--; + } + +} + +#else +ARM_DSP_ATTRIBUTE void arm_cmplx_mag_squared_q15( + const q15_t * pSrc, + q15_t * pDst, + uint32_t numSamples) +{ + uint32_t blkCnt; /* Loop counter */ + +#if defined (ARM_MATH_DSP) + q31_t in; + q31_t acc0; /* Accumulators */ +#else + q15_t real, imag; /* Temporary input variables */ + q31_t acc0, acc1; /* Accumulators */ +#endif + +#if defined (ARM_MATH_LOOPUNROLL) + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = numSamples >> 2U; + + while (blkCnt > 0U) + { + /* C[0] = (A[0] * A[0] + A[1] * A[1]) */ + +#if defined (ARM_MATH_DSP) + in = read_q15x2_ia (&pSrc); + acc0 = __SMUAD(in, in); + /* store result in 3.13 format in destination buffer. */ + *pDst++ = (q15_t) (acc0 >> 17); + + in = read_q15x2_ia (&pSrc); + acc0 = __SMUAD(in, in); + *pDst++ = (q15_t) (acc0 >> 17); + + in = read_q15x2_ia (&pSrc); + acc0 = __SMUAD(in, in); + *pDst++ = (q15_t) (acc0 >> 17); + + in = read_q15x2_ia (&pSrc); + acc0 = __SMUAD(in, in); + *pDst++ = (q15_t) (acc0 >> 17); +#else + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + /* store result in 3.13 format in destination buffer. */ + *pDst++ = (q15_t) (((q63_t) acc0 + acc1) >> 17); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + *pDst++ = (q15_t) (((q63_t) acc0 + acc1) >> 17); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + *pDst++ = (q15_t) (((q63_t) acc0 + acc1) >> 17); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + *pDst++ = (q15_t) (((q63_t) acc0 + acc1) >> 17); +#endif /* #if defined (ARM_MATH_DSP) */ + + /* 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] = (A[0] * A[0] + A[1] * A[1]) */ + +#if defined (ARM_MATH_DSP) + in = read_q15x2_ia (&pSrc); + acc0 = __SMUAD(in, in); + + /* store result in 3.13 format in destination buffer. */ + *pDst++ = (q15_t) (acc0 >> 17); +#else + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + + /* store result in 3.13 format in destination buffer. */ + *pDst++ = (q15_t) (((q63_t) acc0 + acc1) >> 17); +#endif + + /* Decrement loop counter */ + blkCnt--; + } + +} + +#endif /* defined(ARM_MATH_MVEI) */ + +/** + @} end of cmplx_mag_squared group + */ |