SbMathHelper.h File Reference

#include <Inventor/SbBase.h>
#include <cfloat>
#include <cmath>
#include <Inventor/STL/limits>
#include <Inventor/STL/complex>

Go to the source code of this file.

Namespaces
namespace	SbMathHelper

Functions
SbBool	SbMathHelper::floatIsEqual (float A, float B, unsigned int numFloat)
	Return true if A and B are equal.
template<typename T >
T	SbMathHelper::Max (T a, T b)
template<typename T >
T	SbMathHelper::Min (T a, T b)
template<typename T >
T	SbMathHelper::shiftValue (T v, int offset)
	shift the value of offset representable values considering value type.
template<>
float	SbMathHelper::shiftValue (float v, int offset)
template<>
double	SbMathHelper::shiftValue (double v, int offset)
template<typename T >
T	SbMathHelper::Clamp (T a, T minV, T maxV)
	Clamps value to given range [minV, maxV].
template<typename T >
T	SbMathHelper::alignToNextPowerOf2 (T n, size_t shift)
	Return an integer multiple of 2^shift greater or equals to n.
template<typename T >
T	SbMathHelper::getNextPow2 (T a)
	Return the next power of 2 greater or equal to a.
template<int N, typename T >
T	SbMathHelper::nearestUpperMultipleOf (T v)
	Return the nearest upper multiple of some value.
template<int N, typename T >
T	SbMathHelper::nearestLowerMultipleOf (T v)
	Return the nearest lower multiple of some value.
int	SbMathHelper::getNextLog2 (int num)
	Return the next log of 2 greater or equal to a.
float	SbMathHelper::deg2Rad (float a)
	Convert degrees to radians.
float	SbMathHelper::rad2Deg (float a)
	Convert radians to degrees.
double	SbMathHelper::roundToNearestInt (double x)
	Round the double value to the nearest integer value.
bool	SbMathHelper::isNaN (double a)
	Returns true if the specified value is NaN.
int	SbMathHelper::rand ()
	Returns a pseudo-random integer between 0 and OIV_RAND_MAX.
void	SbMathHelper::srand (unsigned seed)
	Set seed for a new sequence of pseudo-random integers to be returned by rand()
template<typename T >
bool	SbMathHelper::isCoinc (const T &x, const T &y, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Coincidence test using given tolerance.
template<typename T >
T	SbMathHelper::abs (const T &v)
	Return absolute value of v.
template<>
long int	SbMathHelper::abs (const long int &v)
template<>
float	SbMathHelper::abs (const float &v)
template<>
double	SbMathHelper::abs (const double &v)
template<typename T >
bool	SbMathHelper::isLessThan (const T &x, const T &y, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Less than test (x < y) using given tolerance.
template<typename T >
bool	SbMathHelper::isGreaterThan (const T &x, const T &y, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Greater than test (x > y) using given tolerance.
template<typename T >
bool	SbMathHelper::isLessOrEqualThan (const T &x, const T &y, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Less or equal than test (x <= y) using given tolerance.
template<typename T >
bool	SbMathHelper::isGreaterOrEqualThan (const T &x, const T &y, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Greater or equal than test (x >= y) using given tolerance.
template<typename T >
bool	SbMathHelper::checkRangeI (const T &x, const T &min, T max, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Inside closed interval (including endpoints) using given tolerance test.
template<typename T >
bool	SbMathHelper::checkRangeE (const T &x, const T &min, T max, T tol=(T) OIV_DEF_MATH_HELPER_EPS)
	Inside open interval (excluding endpoints) using given tolerance test.
template<typename T >
bool	SbMathHelper::isCoincRelativeOrAbsolute (const T &A, const T &B, T maxRelativeError, T maxAbsoluteError)
	Relative or absolute error without sign comparison.
template<typename T >
int	SbMathHelper::sgn (const T &val)
	Implements signum return value in { -1, 0, +1 }.
template<typename T >
T	SbMathHelper::rangeMax ()
	Returns the maximum finite value representable by the numeric type T.
template<typename T >
T	SbMathHelper::rangeMin ()
	Returns the lowest finite value representable by the numeric type T, that is, a finite value x such that there is no other finite value y where y < x.
template<>
float	SbMathHelper::rangeMin< float > ()
template<>
double	SbMathHelper::rangeMin< double > ()
template<typename T >
T	SbMathHelper::fract (const T &)
	Return fractional part of given value.
template<>
float	SbMathHelper::fract (const float &value)
template<>
double	SbMathHelper::fract (const double &value)
template<>
long double	SbMathHelper::fract (const long double &value)
bool	SbMathHelper::isFinite (double value)
	Returns true if the value is a finite value (i.e.
bool	SbMathHelper::isFinite (float value)
	Returns true if the value is a finite value (i.e.

Variables
static const int	SbMathHelper::OIV_RAND_MAX = 32767
	Maximum value returned by SbMathHelper::rand()
static const float	SbMathHelper::OIV_DEF_MATH_HELPER_EPS = 1.e-6f
	Default epsilon value for coincidence and interval checking.