mirror of https://github.com/gnss-sdr/gnss-sdr
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*!
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* \file volk_gnsssdr_sse3_intrinsics.h
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* \author Andres Cecilia, 2014. a.cecilia.luque(at)gmail.com
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* \brief Holds SSE3 intrinsics of intrinsics.
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* They should be used in VOLK kernels to avoid copy-paste.
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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*/
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#ifndef INCLUDED_VOLK_VOLK_SSE3_INTRINSICS_H
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#define INCLUDED_VOLK_VOLK_SSE3_INTRINSICS_H
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#include <pmmintrin.h>
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static inline __m128
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_mm_complexmul_ps(__m128 x, __m128 y)
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{
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__m128 yl, yh, tmp1, tmp2;
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yl = _mm_moveldup_ps(y); // Load yl with cr,cr,dr,dr
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yh = _mm_movehdup_ps(y); // Load yh with ci,ci,di,di
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tmp1 = _mm_mul_ps(x, yl); // tmp1 = ar*cr,ai*cr,br*dr,bi*dr
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x = _mm_shuffle_ps(x, x, 0xB1); // Re-arrange x to be ai,ar,bi,br
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tmp2 = _mm_mul_ps(x, yh); // tmp2 = ai*ci,ar*ci,bi*di,br*di
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return _mm_addsub_ps(tmp1, tmp2); // ar*cr-ai*ci, ai*cr+ar*ci, br*dr-bi*di, bi*dr+br*di
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}
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static inline __m128
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_mm_complexconjugatemul_ps(__m128 x, __m128 y)
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{
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const __m128 conjugator = _mm_setr_ps(0, -0.f, 0, -0.f);
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y = _mm_xor_ps(y, conjugator); // conjugate y
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return _mm_complexmul_ps(x, y);
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}
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static inline __m128
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_mm_magnitudesquared_ps_sse3(__m128 cplxValue1, __m128 cplxValue2)
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{
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cplxValue1 = _mm_mul_ps(cplxValue1, cplxValue1); // Square the values
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cplxValue2 = _mm_mul_ps(cplxValue2, cplxValue2); // Square the Values
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return _mm_hadd_ps(cplxValue1, cplxValue2); // Add the I2 and Q2 values
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}
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static inline __m128
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_mm_magnitude_ps_sse3(__m128 cplxValue1, __m128 cplxValue2)
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{
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return _mm_sqrt_ps(_mm_magnitudesquared_ps_sse3(cplxValue1, cplxValue2));
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}
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#endif /* INCLUDE_VOLK_VOLK_SSE3_INTRINSICS_H_ */
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