wmmon/ulllib.h

   1 /*
   2  *  Unsigned long long arithmetic limited library, tailored for wmmon's
   3  *  specific needs.
   4  *
   5  *  Copyright (c) 2014 Pedro Gimeno Fortea
   6  *
   7  *  This file is part of wmmon.
   8  *
   9  *  wmmon is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  wmmon is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with wmmon; if not, write to the Free Software Foundation, Inc.,
  21  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 #ifndef __ULLLIB_H_
  25 #define __ULLLIB_H_
  26
  27 #ifdef HAVE_LONG_LONG_INT
  28
  29 typedef unsigned long long ullong;
  30
  31 #define ullreset(x) (*(x) = 0)
  32 #define ulladd(x, y) (*(x) += *(y))
  33 #define ullsub(x, y) ((long)(*(x) - *(y)))
  34 #define ullparse(x, y) (*(x) = atoll(y))
  35
  36 #else /* ! HAVE_LONG_LONG_INT */
  37
  38 typedef struct {
  39         unsigned long H;
  40         unsigned long L;
  41 } ullong;
  42
  43 void ullreset(ullong *);
  44 void ulladd(ullong *, const ullong *);
  45 long ullsub(const ullong *, const ullong *);
  46 void ullparse(ullong *, const char *);
  47
  48 #endif /* HAVE_LONG_LONG_INT */
  49
  50 #endif /* __ULLIB_H_ */