3 * $Id: tv.h,v 1.4 1999/05/17 20:37:25 mdw Exp $
5 * Manipulation of timeval structures
7 * (c) 1998 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the mLib utilities library.
14 * mLib is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * mLib is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with mLib; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Revision history --------------------------------------------------*
33 * Revision 1.4 1999/05/17 20:37:25 mdw
34 * New function `tv_addl' to add a literal to a time value.
36 * Revision 1.3 1999/05/06 19:51:36 mdw
37 * Reformatted the LGPL notice a little bit.
39 * Revision 1.2 1999/05/05 18:50:31 mdw
40 * Change licensing conditions to LGPL.
42 * Revision 1.1 1998/11/25 23:30:01 mdw
54 /*----- Header files ------------------------------------------------------*/
58 /*----- Functions provided ------------------------------------------------*/
62 * Arguments: @struct timeval *dst@ = destination block
63 * @const struct timeval *a, *b@ = source blocks
67 * Use: Adds two timevals.
70 extern void tv_add(struct timeval */*dst*/,
71 const struct timeval */*a*/,
72 const struct timeval */*b*/);
74 /* --- @tv_addl@ --- *
76 * Arguments: @struct timeval *dst@ = destination block
77 * @const struct timeval *a@ = source blocks
78 * @time_t sec@, @unsigned long usec@ = time to add
82 * Use: Adds a literal time in seconds and microseconds.
85 extern void tv_addl(struct timeval */*dst*/,
86 const struct timeval */*a*/,
87 time_t /*sec*/, unsigned long /*usec*/);
91 * Arguments: @struct timeval *dst@ = destination block
92 * @const struct timeval *a, *b@ = source blocks
96 * Use: Subtracts two timevals.
99 extern void tv_sub(struct timeval */*dst*/,
100 const struct timeval */*a*/,
101 const struct timeval */*b*/);
103 /* --- @tv_cmp@ --- *
105 * Arguments: @const struct timeval *a, *b@ = source blocks
107 * Returns: Less than, equal to, or greater than zero.
109 * Use: Compares two timevals.
112 extern int tv_cmp(const struct timeval */*a*/,
113 const struct timeval */*b*/);
115 /*----- That's all, folks -------------------------------------------------*/