Referencia del Archivo src/qwt/src/qwt_math.h

#include <math.h>
#include <qpoint.h>
#include "qwt_global.h"
#include "qwt_double_rect.h"

Ir al código fuente de este archivo.

'defines'
#define	qwtMax   QMAX
#define	qwtMin   QMIN
#define	qwtAbs   QABS
#define	LOG10_2   0.30102999566398119802
#define	LOG10_3   0.47712125471966243540
#define	LOG10_5   0.69897000433601885749
#define	M_2PI   6.28318530717958623200
#define	LOG_MIN   1.0e-100
	Mininum value for logarithmic scales.
#define	LOG_MAX   1.0e100
	Maximum value for logarithmic scales.
#define	M_E   2.7182818284590452354
#define	M_LOG2E   1.4426950408889634074
#define	M_LOG10E   0.43429448190325182765
#define	M_LN2   0.69314718055994530942
#define	M_LN10   2.30258509299404568402
#define	M_PI   3.14159265358979323846
#define	M_PI_2   1.57079632679489661923
#define	M_PI_4   0.78539816339744830962
#define	M_1_PI   0.31830988618379067154
#define	M_2_PI   0.63661977236758134308
#define	M_2_SQRTPI   1.12837916709551257390
#define	M_SQRT2   1.41421356237309504880
#define	M_SQRT1_2   0.70710678118654752440
Funciones
QWT_EXPORT double	qwtGetMin (const double *array, int size)
	Find the smallest value in an array.
QWT_EXPORT double	qwtGetMax (const double *array, int size)
	Find the largest value in an array.
int	qwtSign (double x)
	Return the sign.
double	qwtSqr (const double x)
	Return the square of a number.
template<class T >
T	qwtLim (const T &x, const T &x1, const T &x2)
	Limit a value to fit into a specified interval.
QPoint	qwtPolar2Pos (const QPoint &pole, double radius, double angle)
QPoint	qwtDegree2Pos (const QPoint &pole, double radius, double angle)
QwtDoublePoint	qwtPolar2Pos (const QwtDoublePoint &pole, double radius, double angle)
QwtDoublePoint	qwtDegree2Pos (const QwtDoublePoint &pole, double radius, double angle)
double	qwtRound (double value)
	Rounding of doubles, like qRound for integers.

---

Documentación de los 'defines'

#define LOG10_2   0.30102999566398119802

#define LOG10_3   0.47712125471966243540

#define LOG10_5   0.69897000433601885749

#define LOG_MAX   1.0e100

Maximum value for logarithmic scales.

#define LOG_MIN   1.0e-100

Mininum value for logarithmic scales.

#define M_1_PI   0.31830988618379067154

#define M_2_PI   0.63661977236758134308

#define M_2_SQRTPI   1.12837916709551257390

#define M_2PI   6.28318530717958623200

#define M_E   2.7182818284590452354

#define M_LN10   2.30258509299404568402

#define M_LN2   0.69314718055994530942

#define M_LOG10E   0.43429448190325182765

#define M_LOG2E   1.4426950408889634074

#define M_PI   3.14159265358979323846

#define M_PI_2   1.57079632679489661923

#define M_PI_4   0.78539816339744830962

#define M_SQRT1_2   0.70710678118654752440

#define M_SQRT2   1.41421356237309504880

#define qwtAbs   QABS

#define qwtMax   QMAX

#define qwtMin   QMIN

---

Documentación de las funciones

QPoint qwtDegree2Pos	(	const QPoint &	pole,
		double	radius,
		double	angle
	)		[inline]

QwtDoublePoint qwtDegree2Pos	(	const QwtDoublePoint &	pole,
		double	radius,
		double	angle
	)		[inline]

QWT_EXPORT double qwtGetMax	(	const double *	array,
		int	size
	)

Find the largest value in an array.

Parámetros:

array	Pointer to an array
size	Array size

QWT_EXPORT double qwtGetMin	(	const double *	array,
		int	size
	)

Find the smallest value in an array.

Parámetros:

array	Pointer to an array
size	Array size

template<class T >

T qwtLim	(	const T &	x,
		const T &	x1,
		const T &	x2
	)

Limit a value to fit into a specified interval.

Parámetros:

x	Input value
x1	First interval boundary
x2	Second interval boundary

QwtDoublePoint qwtPolar2Pos	(	const QwtDoublePoint &	pole,
		double	radius,
		double	angle
	)		[inline]

QPoint qwtPolar2Pos	(	const QPoint &	pole,
		double	radius,
		double	angle
	)		[inline]

double qwtRound

(

double

value

)

[inline]

Rounding of doubles, like qRound for integers.

int qwtSign

(

double

x

)

[inline]

Return the sign.

double qwtSqr

(

const double

x

)

[inline]

Return the square of a number.