.TH "QwtScaleArithmetic" 3 "Mon Aug 1 2011" "Version 5.2.2" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtScaleArithmetic \- 
.PP
Arithmetic including a tolerance.  

.SH SYNOPSIS
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.PP
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\fC#include <qwt_scale_engine.h>\fP
.SS "Static Public Member Functions"

.in +1c
.ti -1c
.RI "static double \fBceil125\fP (double x)"
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.ti -1c
.RI "static double \fBceilEps\fP (double value, double intervalSize)"
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.ti -1c
.RI "static int \fBcompareEps\fP (double value1, double value2, double intervalSize)"
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.RI "static double \fBdivideEps\fP (double interval, double steps)"
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.RI "static double \fBfloor125\fP (double x)"
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.RI "static double \fBfloorEps\fP (double value, double intervalSize)"
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.SH "Detailed Description"
.PP 
Arithmetic including a tolerance. 
.SH "Member Function Documentation"
.PP 
.SS "double QwtScaleArithmetic::ceil125 (doublex)\fC [static]\fP"Find the smallest value out of {1,2,5}*10^n with an integer number n which is greater than or equal to x
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\fBParameters:\fP
.RS 4
\fIx\fP Input value 
.RE
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.SS "double QwtScaleArithmetic::ceilEps (doublevalue, doubleintervalSize)\fC [static]\fP"Ceil a value, relative to an interval
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\fBParameters:\fP
.RS 4
\fIvalue\fP Value to ceil 
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\fIintervalSize\fP Interval size
.RE
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\fBSee also:\fP
.RS 4
\fBfloorEps()\fP 
.RE
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.SS "int QwtScaleArithmetic::compareEps (doublevalue1, doublevalue2, doubleintervalSize)\fC [static]\fP"
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Compare 2 values, relative to an interval. Values are 'equal', when : $\cdot value2 - value1 <= abs(intervalSize * 10e^{-6})$
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\fBParameters:\fP
.RS 4
\fIvalue1\fP First value to compare 
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\fIvalue2\fP Second value to compare 
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\fIintervalSize\fP interval size
.RE
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\fBReturns:\fP
.RS 4
0: if equal, \-1: if value2 > value1, 1: if value1 > value2 
.RE
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.SS "double QwtScaleArithmetic::divideEps (doubleintervalSize, doublenumSteps)\fC [static]\fP"
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Divide an interval into steps. $stepSize = (intervalSize - intervalSize * 10e^{-6}) / numSteps$.PP
\fBParameters:\fP
.RS 4
\fIintervalSize\fP Interval size 
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\fInumSteps\fP Number of steps 
.RE
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\fBReturns:\fP
.RS 4
Step size 
.RE
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.SS "double QwtScaleArithmetic::floor125 (doublex)\fC [static]\fP"
.PP
Find the largest value out of {1,2,5}*10^n with an integer number n which is smaller than or equal to x. \fBParameters:\fP
.RS 4
\fIx\fP Input value 
.RE
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.SS "double QwtScaleArithmetic::floorEps (doublevalue, doubleintervalSize)\fC [static]\fP"Floor a value, relative to an interval
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\fBParameters:\fP
.RS 4
\fIvalue\fP Value to floor 
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\fIintervalSize\fP Interval size
.RE
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\fBSee also:\fP
.RS 4
\fBfloorEps()\fP 
.RE
.PP


.SH "Author"
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