timeval_func.h

/*
 * util/timeval_func.h - definitions of helpers for struct timeval values.
 *
 * Copyright (c) 2023, NLnet Labs. All rights reserved.
 *
 * This software is open source.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
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 *
 * Neither the name of the NLNET LABS nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

/**
 * \file
 *
 * This file contains definitions of helpers to manipulate struct timeval
 * values, implemented in the corresponding C file.
 */
#include <sys/time.h>

#ifndef timeval_isset
#define timeval_isset(tv) ((tv)->tv_sec || (tv)->tv_usec)
#endif
#ifndef timeval_clear
#define timeval_clear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
#endif
void timeval_subtract(struct timeval* d, const struct timeval* end, const struct timeval* start);
void timeval_add(struct timeval* d, const struct timeval* add);
void timeval_divide(struct timeval* avg, const struct timeval* sum, long long d);
int timeval_smaller(const struct timeval* x, const struct timeval* y);