QwtScaleArithmetic Class Reference

Arithmetic including a tolerance. More...

#include <qwt_scale_engine.h>

Static Public Member Functions
static double	ceilEps (double value, double intervalSize)
static double	floorEps (double value, double intervalSize)
static double	divideEps (double intervalSize, double numSteps)
	Divide an interval into steps. More...
static double	divideInterval (double intervalSize, int numSteps, uint base)

Detailed Description

Arithmetic including a tolerance.

Member Function Documentation

ceilEps()

double QwtScaleArithmetic::ceilEps ( double  value, double  intervalSize  )

static

Ceil a value, relative to an interval

Parameters

value	Value to be ceiled
intervalSize	Interval size

Returns

Rounded value

See also

floorEps()

divideEps()

double QwtScaleArithmetic::divideEps ( double  intervalSize, double  numSteps  )

static

Divide an interval into steps.

Parameters

intervalSize	Interval size
numSteps	Number of steps

Returns

Step size

divideInterval()

double QwtScaleArithmetic::divideInterval ( double  intervalSize, int  numSteps, uint  base  )

static

Calculate a step size for a given interval

Parameters

intervalSize	Interval size
numSteps	Number of steps
base	Base for the division ( usually 10 )

Returns

Calculated step size

floorEps()

double QwtScaleArithmetic::floorEps ( double  value, double  intervalSize  )

static

Floor a value, relative to an interval

Parameters

value	Value to be floored
intervalSize	Interval size

Returns

Rounded value

See also

floorEps()