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Annotation of fam/fam/timeval.h, Revision 1.1.1.1

1.1       trev        1: //  Copyright (C) 1999 Silicon Graphics, Inc.  All Rights Reserved.
                      2: //
                      3: //  This program is free software; you can redistribute it and/or modify it
                      4: //  under the terms of version 2 of the GNU General Public License as
                      5: //  published by the Free Software Foundation.
                      6: //
                      7: //  This program is distributed in the hope that it would be useful, but
                      8: //  WITHOUT ANY WARRANTY; without even the implied warranty of
                      9: //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  Further, any
                     10: //  license provided herein, whether implied or otherwise, is limited to
                     11: //  this program in accordance with the express provisions of the GNU
                     12: //  General Public License.  Patent licenses, if any, provided herein do not
                     13: //  apply to combinations of this program with other product or programs, or
                     14: //  any other product whatsoever.  This program is distributed without any
                     15: //  warranty that the program is delivered free of the rightful claim of any
                     16: //  third person by way of infringement or the like.  See the GNU General
                     17: //  Public License for more details.
                     18: //
                     19: //  You should have received a copy of the GNU General Public License along
                     20: //  with this program; if not, write the Free Software Foundation, Inc., 59
                     21: //  Temple Place - Suite 330, Boston MA 02111-1307, USA.
                     22:
                     23: #ifndef timeval_included
                     24: #define timeval_included
                     25:
                     26: #include <sys/time.h>
                     27:
                     28: //////////////////////////////////////////////////////////////////////////////
                     29: //  Define a few arithmetic ops on timevals.  Makes code much more
                     30: //  readable.
                     31: //
                     32: //  operators += and -= are defined in timeval.C.  The rest are
                     33: //  defined as inline functions.
                     34:
                     35: timeval& operator += (timeval& left, const timeval& right);
                     36: timeval& operator -= (timeval& left, const timeval& right);
                     37:
                     38: inline timeval
                     39: operator + (const timeval& left, const timeval& right)
                     40: {
                     41:     timeval result = left;
                     42:     result += right;
                     43:     return result;
                     44: }
                     45:
                     46: inline timeval
                     47: operator - (const timeval& left, const timeval& right)
                     48: {
                     49:     timeval result = left;
                     50:     result -= right;
                     51:     return result;
                     52: }
                     53:
                     54: inline int
                     55: operator < (const timeval& left, const timeval& right)
                     56: {
                     57:     return timercmp(&left, &right, < );
                     58: }
                     59:
                     60: inline int
                     61: operator > (const timeval& left, const timeval& right)
                     62: {
                     63:     return timercmp(&left, &right, > );
                     64: }
                     65:
                     66: inline int
                     67: operator >= (const timeval& left, const timeval& right)
                     68: {
                     69:     return !(left < right);
                     70: }
                     71:
                     72: inline int
                     73: operator <= (const timeval& left, const timeval& right)
                     74: {
                     75:     return !(left > right);
                     76: }
                     77:
                     78: inline int
                     79: operator == (const timeval& left, const timeval& right)
                     80: {
                     81:     return timercmp(&left, &right, == );
                     82: }
                     83:
                     84: inline int
                     85: operator != (const timeval& left, const timeval& right)
                     86: {
                     87:     return timercmp(&left, &right, != );
                     88: }
                     89:
                     90: #endif /* !timeval_included */