/usr/include/volk/saturation_arithmetic.h is in libvolk1-dev 1.3-1+b4.
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 2016 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.
*/
#ifndef INCLUDED_volk_saturation_arithmetic_H_
#define INCLUDED_volk_saturation_arithmetic_H_
#include <limits.h>
static inline int16_t sat_adds16i(int16_t x, int16_t y)
{
int32_t res = (int32_t) x + (int32_t) y;
if (res < SHRT_MIN) res = SHRT_MIN;
if (res > SHRT_MAX) res = SHRT_MAX;
return res;
}
static inline int16_t sat_muls16i(int16_t x, int16_t y)
{
int32_t res = (int32_t) x * (int32_t) y;
if (res < SHRT_MIN) res = SHRT_MIN;
if (res > SHRT_MAX) res = SHRT_MAX;
return res;
}
#endif /* INCLUDED_volk_saturation_arithmetic_H_ */
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