saturation_arithmetic.h

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/* -*- c++ -*- */
/*
 * Copyright 2016 Free Software Foundation, Inc.
 *
 * This file is part of VOLK
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
 
 
#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_ */