Common math functions
[Definitions automatically generated by otStudio]

Defines
#define	_ceilPos(X)   ((X - (int)(X)) > 0 ? (int)(X + 1) : (int)(X))
	Ceil macro.
#define	_ceilNeg(X)   ((X - (int)(X)) < 0 ? (int)(X - 1) : (int)(X))
#define	_ceil(X)   ( ((X) > 0) ? _ceilPos(X) : _ceilNeg(X) )
Functions
int	_rand (void)
	Returns a pseudo-random integral number in the range between 0 and 32767. This number is generated by an algorithm that returns a sequence of apparently non-related numbers each time it is called. This algorithm uses a seed to generate the series, which should be initialized to some distinctive value using function _srand.
void	_srand (unsigned int seed)
	The pseudo-random number generator is initialized using the argument passed as seed. For every different seed value used in a call to srand, the pseudo-random number generator can be expected to generate a different succession of results in the subsequent calls to _rand.
long	map (long x, long in_min, long in_max, long out_min, long out_max)
	Re-maps a number from one range to another. From Arduino project.
float	_floor (float num)
	Floor function.

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Define Documentation

#define _ceil (  X   )     ( ((X) > 0) ? _ceilPos(X) : _ceilNeg(X) )

#define _ceilNeg (  X   )     ((X - (int)(X)) < 0 ? (int)(X - 1) : (int)(X))

#define _ceilPos (  X   )     ((X - (int)(X)) > 0 ? (int)(X + 1) : (int)(X))

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Function Documentation

float _floor (  float  num  )

int _rand (  void   )

Returns: An integer value between 0 and 32767

void _srand (  unsigned int  seed  )

Parameters: seed  An integer value to be used as seed by the pseudo-random number generator algorithm.

long map (  long  x, long  in_min, long  in_max, long  out_min, long  out_max )

Parameters: x  The number to map. in_min  The lower bound of the value's current range. in_max  The upper bound of the value's current range. out_min  The lower bound of the value's target range. out_max  The upper bound of the value's target range. Returns: The mapped value.

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