#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

#define qwtMax QMAX

#define qwtMin QMIN

#define qwtAbs QABS

#define qwtInt qRound

QWT_EXPORT double qwtCeil125 (double x)

QWT_EXPORT double qwtFloor125 (double x)

QWT_EXPORT double qwtGetMin (double *array, int size)

QWT_EXPORT double qwtGetMax (double *array, int size)

QWT_EXPORT void qwtTwistArray (double *array, int size)

QWT_EXPORT int qwtChkMono (double *array, int size)

QWT_EXPORT void qwtLinSpace (double *array, int size, double xmin, double xmax)

QWT_EXPORT void qwtLogSpace (double *array, int size, double xmin, double xmax)

template<class T> int qwtSign (const T &x)

template<class T> T qwtSqr (const T &x)

template<class T> void qwtCopyArray (T *dest, T *src, int n)

template<class T> void qwtShiftArray (T *arr, int size, int di)

template<class T> void qwtSwap (T &x1, T &x2)

template<class T> void qwtSort (const T &x1, const T &x2, T &xmin, T &xmax)

template<class T> void qwtSort (T &x1, T &x2)

template<class T> T qwtLim (const T &x, const T &x1, const T &x2)

QPoint qwtPolar2Pos (const QPoint &center, double radius, double angle)

QPoint qwtDegree2Pos (const QPoint &center, double radius, double angle)

Maximum value for logarithmic scales.

Definition at line 46 of file qwt_math.h.

Referenced by QwtAutoScale::setRange(), and QwtAutoScale::setReference().

Mininum value for logarithmic scales.

Definition at line 41 of file qwt_math.h.

Referenced by QwtAutoScale::setRange(), and QwtAutoScale::setReference().

Find the smallest value out of {1,2,5}*10^n with an integer number n which is greater than or equal to x.

Parameters: x Input value

Definition at line 56 of file qwt_math.cpp.

Checks if an array is a strictly monotonic sequence.

Parameters: array Pointer to an array

size Size of the array

Returns:

0

sequence is not strictly monotonic

1

sequence is strictly monotonically increasing

-1

sequence is strictly monotonically decreasing

Definition at line 119 of file qwt_math.cpp.

Copy an array into another.

Parameters: dest Destination

src Source

n Number of elements

Definition at line 142 of file qwt_math.h.

Referenced by qwtShiftArray().

Find the largest value out of {1,2,5}*10^n with an integer number n which is smaller than or equal to x.

Parameters: x Input value

Definition at line 85 of file qwt_math.cpp.

Find the largest value in an array.

Parameters: array Pointer to an array

size Array size

Definition at line 37 of file qwt_math.cpp.

Find the smallest value in an array.

Parameters: array Pointer to an array

size Array size

Definition at line 19 of file qwt_math.cpp.

Limit a value to fit into a specified interval.

Parameters: x Input value

x1 First interval boundary

x2 Second interval boundary

Definition at line 245 of file qwt_math.h.

Referenced by QwtArrowButton::QwtArrowButton(), QwtScaleDraw::setAngleRange(), QwtDblRange::setRange(), QwtWheel::setTickCnt(), QwtWheel::setTotalAngle(), QwtWheel::setViewAngle(), and QwtCurve::verifyRange().

Create an array of equally spaced values.

Parameters: array Where to put the values

size Size of the array

xmin Value associated with index 0

xmax Value associated with index (size-1)

Definition at line 161 of file qwt_math.cpp.

Create an array of logarithmically equally spaced values.

Parameters: array Where to put the values

size Size of the array

xmin Value associated with index 0

xmax Value associated with index (size-1)

Definition at line 189 of file qwt_math.cpp.

Shift an array by a specified number of positions.

Parameters: arr Pointer to an array

size Number of elements

di Number of positions. A positive number shifts right, a negative number shifts left.

Definition at line 157 of file qwt_math.h.

References qwtCopyArray().

Return the sign.

Definition at line 118 of file qwt_math.h.

Sort two values in ascending order.

Definition at line 226 of file qwt_math.h.

Referenced by QwtCurve::verifyRange().

Sort two values in ascending order.

Parameters: x1 First input value

x2 Second input value

xmax Greater value

xmin Smaller value

Definition at line 207 of file qwt_math.h.

Return the square of a number.

Definition at line 130 of file qwt_math.h.

Referenced by QwtPlot::closestCurve(), QwtPlot::closestMarker(), and QwtCurve::drawSpline().

Swap two values.

Definition at line 190 of file qwt_math.h.

Invert the order of array elements.

Parameters: array Pointer to an array

size Size of the array

Definition at line 141 of file qwt_math.cpp.