mirror of https://github.com/gnss-sdr/gnss-sdr
320 lines
13 KiB
C
320 lines
13 KiB
C
/*!
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* \file volk_gnsssdr_8ic_magnitude_squared_8i.h
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* \brief Volk protokernel: calculates the magnitude squared of a 16 bits vector
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* \authors <ul>
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* <li> Andrés Cecilia, 2014. a.cecilia.luque(at)gmail.com
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* </ul>
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*
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* Volk protokernel that calculates the magnitude squared of a
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* 16 bits vector (8 bits the real part and 8 bits the imaginary part)
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* result = (real*real) + (imag*imag)
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2014 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef INCLUDED_volk_gnsssdr_8ic_magnitude_squared_8i_u_H
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#define INCLUDED_volk_gnsssdr_8ic_magnitude_squared_8i_u_H
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#include <inttypes.h>
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#include <stdio.h>
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#include <math.h>
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#ifdef LV_HAVE_SSSE3
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#include <tmmintrin.h>
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/*!
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\brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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\param complexVector The vector containing the complex input values
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\param magnitudeVector The vector containing the real output values
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\param num_points The number of complex values in complexVector to be calculated and stored into cVector
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*/
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static inline void volk_gnsssdr_8ic_magnitude_squared_8i_u_sse3(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points){
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const unsigned int sse_iters = num_points / 16;
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const char* complexVectorPtr = (char*)complexVector;
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char* magnitudeVectorPtr = magnitudeVector;
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__m128i zero, result8;
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__m128i avector, avectorhi, avectorlo, avectorlomult, avectorhimult, aadded, maska;
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__m128i bvector, bvectorhi, bvectorlo, bvectorlomult, bvectorhimult, badded, maskb;
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zero = _mm_setzero_si128();
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maska = _mm_set_epi8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 14, 12, 10, 8, 6, 4, 2, 0);
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maskb = _mm_set_epi8(14, 12, 10, 8, 6, 4, 2, 0, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
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for(unsigned int number = 0;number < sse_iters; number++)
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{
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avector = _mm_lddqu_si128((__m128i*)complexVectorPtr);
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avectorlo = _mm_unpacklo_epi8 (avector, zero);
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avectorhi = _mm_unpackhi_epi8 (avector, zero);
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avectorlomult = _mm_mullo_epi16 (avectorlo, avectorlo);
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avectorhimult = _mm_mullo_epi16 (avectorhi, avectorhi);
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aadded = _mm_hadd_epi16 (avectorlomult, avectorhimult);
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complexVectorPtr += 16;
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bvector = _mm_lddqu_si128((__m128i*)complexVectorPtr);
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bvectorlo = _mm_unpacklo_epi8 (bvector, zero);
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bvectorhi = _mm_unpackhi_epi8 (bvector, zero);
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bvectorlomult = _mm_mullo_epi16 (bvectorlo, bvectorlo);
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bvectorhimult = _mm_mullo_epi16 (bvectorhi, bvectorhi);
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badded = _mm_hadd_epi16 (bvectorlomult, bvectorhimult);
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complexVectorPtr += 16;
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result8 = _mm_or_si128(_mm_shuffle_epi8(aadded, maska), _mm_shuffle_epi8(badded, maskb));
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_mm_storeu_si128((__m128i*)magnitudeVectorPtr, result8);
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magnitudeVectorPtr += 16;
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}
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for (unsigned int i = 0; i<(num_points % 16); ++i)
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{
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const char valReal = *complexVectorPtr++;
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const char valImag = *complexVectorPtr++;
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*magnitudeVectorPtr++ = (valReal * valReal) + (valImag * valImag);
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}
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}
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#endif /* LV_HAVE_SSSE3 */
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//#ifdef LV_HAVE_SSE
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//#include <xmmintrin.h>
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///*!
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// \brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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// \param complexVector The vector containing the complex input values
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// \param magnitudeVector The vector containing the real output values
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// \param num_points The number of complex values in complexVector to be calculated and stored into cVector
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// */
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//static inline void volk_gnsssdr_8ic_magnitude_squared_8i_u_sse(float* magnitudeVector, const lv_32fc_t* complexVector, unsigned int num_points){
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// unsigned int number = 0;
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// const unsigned int quarterPoints = num_points / 4;
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//
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// const float* complexVectorPtr = (float*)complexVector;
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// float* magnitudeVectorPtr = magnitudeVector;
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//
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// __m128 cplxValue1, cplxValue2, iValue, qValue, result;
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// for(;number < quarterPoints; number++){
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// cplxValue1 = _mm_loadu_ps(complexVectorPtr);
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// complexVectorPtr += 4;
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//
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// cplxValue2 = _mm_loadu_ps(complexVectorPtr);
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// complexVectorPtr += 4;
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//
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// // Arrange in i1i2i3i4 format
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// iValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2,0,2,0));
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// // Arrange in q1q2q3q4 format
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// qValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(3,1,3,1));
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//
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// iValue = _mm_mul_ps(iValue, iValue); // Square the I values
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// qValue = _mm_mul_ps(qValue, qValue); // Square the Q Values
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//
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// result = _mm_add_ps(iValue, qValue); // Add the I2 and Q2 values
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//
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// _mm_storeu_ps(magnitudeVectorPtr, result);
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// magnitudeVectorPtr += 4;
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// }
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//
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// number = quarterPoints * 4;
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// for(; number < num_points; number++){
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// float val1Real = *complexVectorPtr++;
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// float val1Imag = *complexVectorPtr++;
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// *magnitudeVectorPtr++ = (val1Real * val1Real) + (val1Imag * val1Imag);
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// }
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//}
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//#endif /* LV_HAVE_SSE */
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#ifdef LV_HAVE_GENERIC
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/*!
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\brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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\param complexVector The vector containing the complex input values
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\param magnitudeVector The vector containing the real output values
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\param num_points The number of complex values in complexVector to be calculated and stored into cVector
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*/
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static inline void volk_gnsssdr_8ic_magnitude_squared_8i_generic(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points){
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const char* complexVectorPtr = (char*)complexVector;
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char* magnitudeVectorPtr = magnitudeVector;
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for(unsigned int number = 0; number < num_points; number++){
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const char real = *complexVectorPtr++;
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const char imag = *complexVectorPtr++;
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*magnitudeVectorPtr++ = (real*real) + (imag*imag);
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}
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}
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#endif /* LV_HAVE_GENERIC */
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#endif /* INCLUDED_volk_gnsssdr_32fc_magnitude_32f_u_H */
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#ifndef INCLUDED_volk_gnsssdr_8ic_magnitude_squared_8i_a_H
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#define INCLUDED_volk_gnsssdr_8ic_magnitude_squared_8i_a_H
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#include <inttypes.h>
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#include <stdio.h>
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#include <math.h>
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#ifdef LV_HAVE_SSSE3
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#include <tmmintrin.h>
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/*!
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\brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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\param complexVector The vector containing the complex input values
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\param magnitudeVector The vector containing the real output values
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\param num_points The number of complex values in complexVector to be calculated and stored into cVector
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*/
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static inline void volk_gnsssdr_8ic_magnitude_squared_8i_a_sse3(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points){
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const unsigned int sse_iters = num_points / 16;
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const char* complexVectorPtr = (char*)complexVector;
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char* magnitudeVectorPtr = magnitudeVector;
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__m128i zero, result8;
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__m128i avector, avectorhi, avectorlo, avectorlomult, avectorhimult, aadded, maska;
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__m128i bvector, bvectorhi, bvectorlo, bvectorlomult, bvectorhimult, badded, maskb;
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zero = _mm_setzero_si128();
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maska = _mm_set_epi8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 14, 12, 10, 8, 6, 4, 2, 0);
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maskb = _mm_set_epi8(14, 12, 10, 8, 6, 4, 2, 0, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
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for(unsigned int number = 0;number < sse_iters; number++)
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{
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avector = _mm_load_si128((__m128i*)complexVectorPtr);
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avectorlo = _mm_unpacklo_epi8 (avector, zero);
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avectorhi = _mm_unpackhi_epi8 (avector, zero);
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avectorlomult = _mm_mullo_epi16 (avectorlo, avectorlo);
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avectorhimult = _mm_mullo_epi16 (avectorhi, avectorhi);
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aadded = _mm_hadd_epi16 (avectorlomult, avectorhimult);
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complexVectorPtr += 16;
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bvector = _mm_load_si128((__m128i*)complexVectorPtr);
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bvectorlo = _mm_unpacklo_epi8 (bvector, zero);
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bvectorhi = _mm_unpackhi_epi8 (bvector, zero);
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bvectorlomult = _mm_mullo_epi16 (bvectorlo, bvectorlo);
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bvectorhimult = _mm_mullo_epi16 (bvectorhi, bvectorhi);
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badded = _mm_hadd_epi16 (bvectorlomult, bvectorhimult);
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complexVectorPtr += 16;
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result8 = _mm_or_si128(_mm_shuffle_epi8(aadded, maska), _mm_shuffle_epi8(badded, maskb));
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_mm_store_si128((__m128i*)magnitudeVectorPtr, result8);
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magnitudeVectorPtr += 16;
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}
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for (unsigned int i = 0; i<(num_points % 16); ++i)
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{
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const char valReal = *complexVectorPtr++;
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const char valImag = *complexVectorPtr++;
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*magnitudeVectorPtr++ = (valReal * valReal) + (valImag * valImag);
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}
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}
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#endif /* LV_HAVE_SSSE3 */
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//#ifdef LV_HAVE_SSE
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//#include <xmmintrin.h>
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///*!
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// \brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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// \param complexVector The vector containing the complex input values
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// \param magnitudeVector The vector containing the real output values
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// \param num_points The number of complex values in complexVector to be calculated and stored into cVector
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// */
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//static inline void volk_gnsssdr_8ic_magnitude_squared_8i_a_sse(float* magnitudeVector, const lv_32fc_t* complexVector, unsigned int num_points){
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// unsigned int number = 0;
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// const unsigned int quarterPoints = num_points / 4;
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//
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// const float* complexVectorPtr = (float*)complexVector;
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// float* magnitudeVectorPtr = magnitudeVector;
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//
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// __m128 cplxValue1, cplxValue2, iValue, qValue, result;
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// for(;number < quarterPoints; number++){
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// cplxValue1 = _mm_load_ps(complexVectorPtr);
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// complexVectorPtr += 4;
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//
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// cplxValue2 = _mm_load_ps(complexVectorPtr);
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// complexVectorPtr += 4;
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//
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// // Arrange in i1i2i3i4 format
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// iValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2,0,2,0));
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// // Arrange in q1q2q3q4 format
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// qValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(3,1,3,1));
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//
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// iValue = _mm_mul_ps(iValue, iValue); // Square the I values
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// qValue = _mm_mul_ps(qValue, qValue); // Square the Q Values
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//
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// result = _mm_add_ps(iValue, qValue); // Add the I2 and Q2 values
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//
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// _mm_store_ps(magnitudeVectorPtr, result);
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// magnitudeVectorPtr += 4;
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// }
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//
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// number = quarterPoints * 4;
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// for(; number < num_points; number++){
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// float val1Real = *complexVectorPtr++;
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// float val1Imag = *complexVectorPtr++;
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// *magnitudeVectorPtr++ = (val1Real * val1Real) + (val1Imag * val1Imag);
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// }
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//}
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//#endif /* LV_HAVE_SSE */
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#ifdef LV_HAVE_GENERIC
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/*!
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\brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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\param complexVector The vector containing the complex input values
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\param magnitudeVector The vector containing the real output values
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\param num_points The number of complex values in complexVector to be calculated and stored into cVector
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*/
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static inline void volk_gnsssdr_8ic_magnitude_squared_8i_a_generic(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points){
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const char* complexVectorPtr = (char*)complexVector;
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char* magnitudeVectorPtr = magnitudeVector;
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for(unsigned int number = 0; number < num_points; number++){
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const char real = *complexVectorPtr++;
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const char imag = *complexVectorPtr++;
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*magnitudeVectorPtr++ = (real*real) + (imag*imag);
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}
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}
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#endif /* LV_HAVE_GENERIC */
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#ifdef LV_HAVE_ORC
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/*!
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\brief Calculates the magnitude squared of complexVector and stores the results in magnitudeVector
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\param complexVector The vector containing the complex input values
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\param magnitudeVector The vector containing the real output values
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\param num_points The number of complex values in complexVector to be calculated and stored into cVector
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*/
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extern void volk_gnsssdr_8ic_magnitude_squared_8i_a_orc_impl(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points);
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static inline void volk_gnsssdr_8ic_magnitude_squared_8i_u_orc(char* magnitudeVector, const lv_8sc_t* complexVector, unsigned int num_points){
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volk_gnsssdr_8ic_magnitude_squared_8i_a_orc_impl(magnitudeVector, complexVector, num_points);
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}
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#endif /* LV_HAVE_ORC */
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#endif /* INCLUDED_volk_gnsssdr_32fc_magnitude_32f_a_H */
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