Definition in file qwt_math.h.
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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 |
#define | LOG_MAX 1.0e100 |
#define | M_E 2.7182818284590452354 |
#define | M_LOG2E 1.4426950408889634074 |
#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 |
Functions | |
QWT_EXPORT double | qwtGetMin (const double *array, int size) |
QWT_EXPORT double | qwtGetMax (const double *array, int size) |
int | qwtSign (double x) |
double | qwtSqr (const double x) |
template<class T> | |
T | qwtLim (const T &x, const T &x1, const T &x2) |
QPoint | qwtPolar2Pos (const QPoint ¢er, double radius, double angle) |
QPoint | qwtDegree2Pos (const QPoint ¢er, double radius, double angle) |
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Maximum value for logarithmic scales.
Definition at line 59 of file qwt_math.h. Referenced by QwtLog10ScaleEngine::autoScale(), and QwtLog10ScaleEngine::divideScale(). |
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Mininum value for logarithmic scales.
Definition at line 54 of file qwt_math.h. Referenced by QwtLog10ScaleEngine::autoScale(), and QwtLog10ScaleEngine::divideScale(). |
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Find the largest value in an array.
Definition at line 37 of file qwt_math.cpp. References qwtMax. |
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Find the smallest value in an array.
Definition at line 19 of file qwt_math.cpp. References qwtMin. |
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Limit a value to fit into a specified interval.
Definition at line 142 of file qwt_math.h. References qwtMax, and qwtMin. Referenced by QwtArrowButton::QwtArrowButton(), QwtRoundScaleDraw::setAngleRange(), QwtDoubleRange::setRange(), QwtWheel::setTickCnt(), QwtWheel::setTotalAngle(), QwtWheel::setViewAngle(), and QwtPlotCurve::verifyRange(). |
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Return the sign.
Definition at line 119 of file qwt_math.h. |
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Return the square of a number.
Definition at line 130 of file qwt_math.h. Referenced by QwtPlotCurve::closestPoint(), and QwtPlotCurve::drawSpline(). |