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QwtScaleArithmetic(3) Qwt User's Guide QwtScaleArithmetic(3)

NAME

QwtScaleArithmetic -
Arithmetic including a tolerance.

SYNOPSIS

#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 interval, double steps)
 
static double ceil125 (double x)
 
static double floor125 (double x)
 

Detailed Description

Arithmetic including a tolerance.

Member Function Documentation

double QwtScaleArithmetic::ceil125 (doublex) [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 (doublevalue, doubleintervalSize) [static] Ceil a value, relative to an interval

Parameters:
value Value to ceil
 
intervalSize Interval size
See also:
floorEps()

double QwtScaleArithmetic::divideEps (doubleintervalSize, doublenumSteps) [static]

Divide an interval into steps. $stepSize = (intervalSize - intervalSize * 10e^{-6}) / numSteps$.PP Parameters:
intervalSize Interval size
 
numSteps Number of steps
Returns:
Step size

double QwtScaleArithmetic::floor125 (doublex) [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 (doublevalue, doubleintervalSize) [static] Floor a value, relative to an interval

Parameters:
value Value to floor
 
intervalSize Interval size
See also:
floorEps()

Author

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Fri Apr 15 2011 Version 6.0.0