44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
/*
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* Copyright (C) OpenTX
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*
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* Based on code named
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _OPENTX_HELPERS_H_
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#define _OPENTX_HELPERS_H_
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#include <string.h>
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template<class t> inline t min(t a, t b) { return a<b?a:b; }
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template<class t> inline t max(t a, t b) { return a>b?a:b; }
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template<class t> inline t sgn(t a) { return a>0 ? 1 : (a < 0 ? -1 : 0); }
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template<class t> inline t limit(t mi, t x, t ma) { return min(max(mi,x),ma); }
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template<class t> inline void SWAP(t & a, t & b) { t tmp = b; b = a; a = tmp; }
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inline void memclear(void * p, size_t size)
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{
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memset(p, 0, size);
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}
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inline bool is_memclear(void * p, size_t size)
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{
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uint8_t * buf = (uint8_t *)p;
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return buf[0] == 0 && memcmp(buf, buf + 1, size - 1) == 0;
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}
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#endif // _OPENTX_HELPERS_H_
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