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/*
* tvmac.c
*
* $Id: tvmac.h,v 1.1.1.1 2006/04/11 17:56:16 source Exp $
*
* Macros for time structure manipulation
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2006 OpenLink Software
*
* This project 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; only version 2 of the License, dated June 1991.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*/
#ifndef _TVMAC_H
#define _TVMAC_H
#if 1
#define TV_RES 1000
#define TV_ZERO(t) (t = 0)
#define TV_ISINF(t) (t == TV_INFINITE)
#define TV_ISZERO(t) (t == 0)
#define TV_XLTY(x,y) (x < y)
#define TV_XADDY(z,x,y) z = x + y
#define TV_XSUBY(z,x,y) z = x - y
#else
#define TV_RES 1000000
#define TV_ZERO(t) (t.tv_sec = t.tv_usec = 0)
#define TV_ISZERO(t) (t.tv_sec == 0 && t.tv_usec == 0)
#define TV_ISINF(t) (t.tv_sec == -1 && t.tv_usec == -1)
#define TV_XLTY(x, y) \
(x.tv_sec < y.tv_sec || \
(x.tv_sec == y.tv_sec && x.tv_usec < y.tv_usec))
#define TV_XADDY(z, x, y) \
if ((z.tv_usec = x.tv_usec + y.tv_usec) < TV_RES) { \
z.tv_sec = x.tv_sec + y.tv_sec; \
} else { \
z.tv_usec -= TV_RES; \
z.tv_sec = x.tv_sec + y.tv_sec + 1; \
}
#define TV_XSUBY(z, x, y) \
if (x.tv_usec >= y.tv_usec) { \
z.tv_sec = x.tv_sec - y.tv_sec; \
z.tv_usec = x.tv_usec - y.tv_usec; \
} else { \
z.tv_sec = x.tv_sec - y.tv_sec - 1; \
z.tv_usec = x.tv_usec + TV_RES - y.tv_usec; \
}
#endif
#endif
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