mirror of https://github.com/gnss-sdr/gnss-sdr
185 lines
6.3 KiB
C
185 lines
6.3 KiB
C
/*!
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* \file volk_gnsssdr_8i_x2_add_8i.h
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* \brief Volk protokernel: adds pairs of 8 bits (char) scalars
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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 adds pairs of 8 bits (char) scalars
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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_8i_x2_add_8i_u_H
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#define INCLUDED_volk_gnsssdr_8i_x2_add_8i_u_H
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#include <inttypes.h>
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#include <stdio.h>
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#ifdef LV_HAVE_SSE2
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#include <emmintrin.h>
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/*!
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\brief Adds the two input vectors and store their results in the third vector
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\param cVector The vector where the results will be stored
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\param aVector One of the vectors to be added
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\param bVector One of the vectors to be added
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\param num_points The number of values in aVector and bVector to be added together and stored into cVector
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*/
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static inline void volk_gnsssdr_8i_x2_add_8i_u_sse2(char* cVector, const char* aVector, const char* bVector, unsigned int num_points){
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const unsigned int sse_iters = num_points / 16;
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char* cPtr = cVector;
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const char* aPtr = aVector;
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const char* bPtr= bVector;
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__m128i aVal, bVal, cVal;
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for(unsigned int number = 0; number < sse_iters; number++){
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aVal = _mm_loadu_si128((__m128i*)aPtr);
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bVal = _mm_loadu_si128((__m128i*)bPtr);
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cVal = _mm_add_epi8(aVal, bVal);
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_mm_storeu_si128((__m128i*)cPtr,cVal); // Store the results back into the C container
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aPtr += 16;
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bPtr += 16;
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cPtr += 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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*cPtr++ = (*aPtr++) + (*bPtr++);
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}
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}
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#endif /* LV_HAVE_SSE2 */
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#ifdef LV_HAVE_GENERIC
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/*!
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\brief Adds the two input vectors and store their results in the third vector
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\param cVector The vector where the results will be stored
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\param aVector One of the vectors to be added
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\param bVector One of the vectors to be added
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\param num_points The number of values in aVector and bVector to be added together and stored into cVector
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*/
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static inline void volk_gnsssdr_8i_x2_add_8i_generic(char* cVector, const char* aVector, const char* bVector, unsigned int num_points){
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char* cPtr = cVector;
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const char* aPtr = aVector;
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const char* bPtr= bVector;
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unsigned int number = 0;
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for(number = 0; number < num_points; number++){
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*cPtr++ = (*aPtr++) + (*bPtr++);
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}
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}
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#endif /* LV_HAVE_GENERIC */
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#endif /* INCLUDED_volk_gnsssdr_8i_x2_add_8i_u_H */
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#ifndef INCLUDED_volk_gnsssdr_8i_x2_add_8i_a_H
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#define INCLUDED_volk_gnsssdr_8i_x2_add_8i_a_H
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#include <inttypes.h>
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#include <stdio.h>
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#ifdef LV_HAVE_SSE2
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#include <emmintrin.h>
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/*!
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\brief Adds the two input vectors and store their results in the third vector
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\param cVector The vector where the results will be stored
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\param aVector One of the vectors to be added
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\param bVector One of the vectors to be added
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\param num_points The number of values in aVector and bVector to be added together and stored into cVector
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*/
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static inline void volk_gnsssdr_8i_x2_add_8i_a_sse2(char* cVector, const char* aVector, const char* bVector, unsigned int num_points){
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const unsigned int sse_iters = num_points / 16;
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char* cPtr = cVector;
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const char* aPtr = aVector;
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const char* bPtr= bVector;
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__m128i aVal, bVal, cVal;
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for(unsigned int number = 0; number < sse_iters; number++){
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aVal = _mm_load_si128((__m128i*)aPtr);
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bVal = _mm_load_si128((__m128i*)bPtr);
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cVal = _mm_add_epi8(aVal, bVal);
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_mm_store_si128((__m128i*)cPtr,cVal); // Store the results back into the C container
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aPtr += 16;
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bPtr += 16;
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cPtr += 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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*cPtr++ = (*aPtr++) + (*bPtr++);
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}
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}
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#endif /* LV_HAVE_SSE2 */
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#ifdef LV_HAVE_GENERIC
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/*!
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\brief Adds the two input vectors and store their results in the third vector
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\param cVector The vector where the results will be stored
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\param aVector One of the vectors to be added
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\param bVector One of the vectors to be added
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\param num_points The number of values in aVector and bVector to be added together and stored into cVector
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*/
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static inline void volk_gnsssdr_8i_x2_add_8i_a_generic(char* cVector, const char* aVector, const char* bVector, unsigned int num_points){
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char* cPtr = cVector;
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const char* aPtr = aVector;
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const char* bPtr= bVector;
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unsigned int number = 0;
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for(number = 0; number < num_points; number++){
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*cPtr++ = (*aPtr++) + (*bPtr++);
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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 Adds the two input vectors and store their results in the third vector
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\param cVector The vector where the results will be stored
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\param aVector One of the vectors to be added
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\param bVector One of the vectors to be added
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\param num_points The number of values in aVector and bVector to be added together and stored into cVector
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*/
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extern void volk_gnsssdr_8i_x2_add_8i_a_orc_impl(char* cVector, const char* aVector, const char* bVector, unsigned int num_points);
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static inline void volk_gnsssdr_8i_x2_add_8i_u_orc(char* cVector, const char* aVector, const char* bVector, unsigned int num_points){
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volk_gnsssdr_8i_x2_add_8i_a_orc_impl(cVector, aVector, bVector, num_points);
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}
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#endif /* LV_HAVE_ORC */
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#endif /* INCLUDED_volk_gnsssdr_8i_x2_add_8i_a_H */
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