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LibrePilot/flight/libraries/math/mathmisc.h

56 lines
1.9 KiB
C

/**
******************************************************************************
* @addtogroup OpenPilot Math Utilities
* @{
* @addtogroup Reuseable math functions
* @{
*
* @file mathmisc.h
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
* @brief Reuseable math functions
*
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* 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 3 of the License, or
* (at your option) any later version.
*
* 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.
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MATHMISC_H
#define MATHMISC_H
// returns min(boundary1,boundary2) if val<min(boundary1,boundary2)
// returns max(boundary1,boundary2) if val>max(boundary1,boundary2)
// returns val if min(boundary1,boundary2)<=val<=max(boundary1,boundary2)
static inline float boundf(float val, float boundary1, float boundary2)
{
if (boundary1 > boundary2) {
if (!(val >= boundary2)) {
return boundary2;
} else if (!(val <= boundary1)) {
return boundary1;
}
} else {
if (!(val >= boundary1)) {
return boundary1;
} else if (!(val <= boundary2)) {
return boundary2;
}
}
return val;
}
#endif /* MATHMISC_H */