QwtScaleArithmetic Class Reference

#include <qwt_scale_engine.h>

List of all members.

Static Public Member Functions
static double	ceil125 (double x)
static double	ceilEps (double value, double intervalSize)
static double	divideEps (double interval, double steps)
static double	floor125 (double x)
static double	floorEps (double value, double intervalSize)

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Detailed Description

Arithmetic including a tolerance.

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Member Function Documentation

double QwtScaleArithmetic::ceil125

(

double

x

)

[static]

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

double QwtScaleArithmetic::ceilEps	(	double	value,
		double	intervalSize
	)		[static]

Ceil a value, relative to an interval

Parameters:

value	Value to ceil
intervalSize	Interval size

See also:

floorEps()

double QwtScaleArithmetic::divideEps	(	double	intervalSize,
		double	numSteps
	)		[static]

Divide an interval into steps.

Parameters:

intervalSize	Interval size
numSteps	Number of steps

Returns:

Step size

double QwtScaleArithmetic::floor125

(

double

x

)

[static]

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

double QwtScaleArithmetic::floorEps	(	double	value,
		double	intervalSize
	)		[static]

Floor a value, relative to an interval

Parameters:

value	Value to floor
intervalSize	Interval size

See also:

floorEps()