boolflags.cpp

/*
    boolflags.cpp
 
    KNode, the KDE newsreader
    Copyright (c) 1999-2001 the KNode authors.
    See file AUTHORS for details
 
    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 2 of the License, or
    (at your option) any later version.
    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 Street, Fifth Floor, Boston, MA 02110-1301, US
*/
 
#include "boolflags.h"
 
void BoolFlags::set(unsigned int i, bool b)
{
  if(i>15) return;
 
  unsigned char p; //bimask
  int n;
 
  if(i<8) { //first byte
    p=(1 << i);
    n=0;
  }
  else { //second byte
    p=(1 << ( i-8 ));
    n=1;
  }
 
  if(b)
    bits[n] = bits[n] | p;
  else
    bits[n] = bits[n] & (255-p);
}
 
 
bool BoolFlags::get(unsigned int i)
{
  if(i>15) return false;
 
  unsigned char p; //bimask
  int n;
 
  if(i<8) { //first byte
    p=(1 << i);
    n=0;
  }
  else { //second byte
    p=(1 << (i-8));
    n=1;
  }
 
  return ( (bits[n] & p)>0 );
}