/usr/include/volk/volk_sse_intrinsics.h is in libvolk1-dev 1.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /* -*- c++ -*- */
/*
* Copyright 2015 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
/*
* This file is intended to hold SSE intrinsics of intrinsics.
* They should be used in VOLK kernels to avoid copy-pasta.
*/
#ifndef INCLUDE_VOLK_VOLK_SSE_INTRINSICS_H_
#define INCLUDE_VOLK_VOLK_SSE_INTRINSICS_H_
#include <xmmintrin.h>
static inline __m128
_mm_magnitudesquared_ps(__m128 cplxValue1, __m128 cplxValue2){
__m128 iValue, qValue;
// Arrange in i1i2i3i4 format
iValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(2,0,2,0));
// Arrange in q1q2q3q4 format
qValue = _mm_shuffle_ps(cplxValue1, cplxValue2, _MM_SHUFFLE(3,1,3,1));
iValue = _mm_mul_ps(iValue, iValue); // Square the I values
qValue = _mm_mul_ps(qValue, qValue); // Square the Q Values
return _mm_add_ps(iValue, qValue); // Add the I2 and Q2 values
}
static inline __m128
_mm_magnitude_ps(__m128 cplxValue1, __m128 cplxValue2){
return _mm_sqrt_ps(_mm_magnitudesquared_ps(cplxValue1, cplxValue2));
}
#endif /* INCLUDE_VOLK_VOLK_SSE_INTRINSICS_H_ */
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