mirror of https://github.com/gnss-sdr/gnss-sdr
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*!
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* \file volk_gnsssdr_sse_intrinsics.h
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* \author Andres Cecilia, 2014. a.cecilia.luque(at)gmail.com
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* \brief Holds SSE 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_SSE_INTRINSICS_H
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#define INCLUDED_VOLK_VOLK_SSE_INTRINSICS_H
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#include <xmmintrin.h>
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static inline __m128
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_mm_magnitudesquared_ps(__m128 cplxValue1, __m128 cplxValue2)
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{
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__m128 iValue, qValue;
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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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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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return _mm_add_ps(iValue, qValue); // Add the I2 and Q2 values
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}
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static inline __m128
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_mm_magnitude_ps(__m128 cplxValue1, __m128 cplxValue2)
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{
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return _mm_sqrt_ps(_mm_magnitudesquared_ps(cplxValue1, cplxValue2));
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}
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#endif /* INCLUDED_VOLK_VOLK_SSE_INTRINSICS_H_ */
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