radio/src/opentx_helpers.h

   1 /*
   2  * Copyright (C) OpenTX
   3  *
   4  * Based on code named
   5  *   th9x - http://code.google.com/p/th9x
   6  *   er9x - http://code.google.com/p/er9x
   7  *   gruvin9x - http://code.google.com/p/gruvin9x
   8  *
   9  * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #ifndef _OPENTX_HELPERS_H_
  22 #define _OPENTX_HELPERS_H_
  23
  24 template<class t> inline t min(t a, t b) { return a<b?a:b; }
  25 template<class t> inline t max(t a, t b) { return a>b?a:b; }
  26 template<class t> inline t sgn(t a) { return a>0 ? 1 : (a < 0 ? -1 : 0); }
  27 template<class t> inline t limit(t mi, t x, t ma) { return min(max(mi,x),ma); }
  28 template<class t> inline void SWAP(t & a, t & b) { t tmp = b; b = a; a = tmp; }
  29
  30 #endif // _OPENTX_HELPERS_H_