/*
 * Copyright (C) OpenTX
 *
 * Based on code named
 *   th9x - http://code.google.com/p/th9x
 *   er9x - http://code.google.com/p/er9x
 *   gruvin9x - http://code.google.com/p/gruvin9x
 *
 * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _OPENTX_HELPERS_H_
#define _OPENTX_HELPERS_H_

#include <string.h>

#if defined(COLORLCD)
#include "thirdparty/libopenui/src/libopenui_helpers.h"
#else
template<class T>
inline T sgn(T a)
{
  return a > 0 ? 1 : (a < 0 ? -1 : 0);
}

template<class t> inline t min(t a, t b) { return a<b?a:b; }
template<class t> inline t max(t a, t b) { return a>b?a:b; }
template<class t> inline t limit(t mi, t x, t ma) { return min(max(mi,x),ma); }

inline int divRoundClosest(const int n, const int d)
{
  if (d == 0)
    return 0;
  else
    return ((n < 0) ^ (d < 0)) ? ((n - d/2)/d) : ((n + d/2)/d);
}
#endif

template<class T>
inline void SWAP(T & a, T & b)
{
  T tmp = b;
  b = a;
  a = tmp;
}

inline void memclear(void * p, size_t size)
{
memset(p, 0, size);
}

inline bool is_memclear(void * p, size_t size)
{
uint8_t * buf = (uint8_t *)p;
return buf[0] == 0 && memcmp(buf, buf + 1, size - 1) == 0;
}

#endif