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/*
* timeutil.h --- Utilities
*
* Copyright (C) 2001, 2002, 2003, 2007 Rob Caelers <robc@krandor.nl>
* All rights reserved.
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef TIMEUTIL_H
#define TIMEUTIL_H
#include <glib.h>
/*****************************************************************************/
/* Time functions */
#define MICRO_PER_SEC 1000000
#define tvRESETTIME(tv) \
{ \
(tv).tv_sec = 0; \
(tv).tv_usec = 0; \
}
#define tvSETTIME(tv, sec, usec) \
{ \
(tv).tv_sec = (sec); \
(tv).tv_usec = (usec); \
}
#define tvADDTIME(ret, a, b) \
{ \
(ret).tv_sec = (a).tv_sec + (b).tv_sec; \
if (((ret).tv_usec = (a).tv_usec + (b).tv_usec) >= MICRO_PER_SEC) \
{ \
(ret).tv_sec++; \
(ret).tv_usec -= MICRO_PER_SEC; \
} \
}
#define tvSUBTIME(ret, a, b) \
{ \
(ret).tv_sec = (a).tv_sec - (b).tv_sec; \
if (((ret).tv_usec = (a).tv_usec - (b).tv_usec) < 0) \
{ \
(ret).tv_sec--; \
(ret).tv_usec += MICRO_PER_SEC; \
} \
}
#define tvTIMEGEQ(a, b) ((a).tv_sec > (b).tv_sec || ((a).tv_sec == (b).tv_sec && (a).tv_usec >= (b).tv_usec))
#define tvTIMEGT(a, b) ((a).tv_sec > (b).tv_sec || ((a).tv_sec == (b).tv_sec && (a).tv_usec > (b).tv_usec))
#define tvTIMELT(a, b) ((a).tv_sec < (b).tv_sec || ((a).tv_sec == (b).tv_sec && (a).tv_usec < (b).tv_usec))
#define tvTIMELEQ0(a) ((a).tv_sec < 0 || ((a).tv_sec == 0 && (a).tv_usec <= 0))
#define tvTIMELT0(a) ((a).tv_sec < 0 || ((a).tv_sec == 0 && (a).tv_usec < 0))
#define tvTIMEEQ0(a) (((a).tv_sec == 0 && (a).tv_usec == 0))
#endif /* TIMEUTIL_H */
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