<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Qwt User's Guide: QwtScaleArithmetic Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.7.3 --> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Qwt User's Guide <span id="projectnumber">6.0.1</span></div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li class="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a 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name="pub-static-methods"></a> Static Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_arithmetic.html#a5768ab1c30f4fa8f02e3bb83f50fac02">ceil125</a> (double x)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_arithmetic.html#a86da4fc0928457d03201d8b520d7d816">ceilEps</a> (double value, double intervalSize)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_arithmetic.html#ae5f0415105b2a97cccb93f3da9ddaead">divideEps</a> (double interval, double steps)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_arithmetic.html#a0cf6b5993a700cf0f00175486bd57b5b">floor125</a> (double x)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_arithmetic.html#a924d97f2e5db236f43f4d65e430e09c1">floorEps</a> (double value, double intervalSize)</td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="textblock"><p>Arithmetic including a tolerance. </p> </div><hr/><h2>Member Function Documentation</h2> <a class="anchor" id="a5768ab1c30f4fa8f02e3bb83f50fac02"></a><!-- doxytag: member="QwtScaleArithmetic::ceil125" ref="a5768ab1c30f4fa8f02e3bb83f50fac02" args="(double x)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">double QwtScaleArithmetic::ceil125 </td> <td>(</td> <td class="paramtype">double </td> <td class="paramname"><em>x</em></td><td>)</td> <td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Find the smallest value out of {1,2,5}*10^n with an integer number n which is greater than or equal to x</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>Input value </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="a86da4fc0928457d03201d8b520d7d816"></a><!-- doxytag: member="QwtScaleArithmetic::ceilEps" ref="a86da4fc0928457d03201d8b520d7d816" args="(double value, double intervalSize)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">double QwtScaleArithmetic::ceilEps </td> <td>(</td> <td class="paramtype">double </td> <td class="paramname"><em>value</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>intervalSize</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Ceil a value, relative to an interval</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">value</td><td>Value to ceil </td></tr> <tr><td class="paramname">intervalSize</td><td>Interval size</td></tr> </table> </dd> </dl> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_scale_arithmetic.html#a924d97f2e5db236f43f4d65e430e09c1">floorEps()</a> </dd></dl> </div> </div> <a class="anchor" id="ae5f0415105b2a97cccb93f3da9ddaead"></a><!-- doxytag: member="QwtScaleArithmetic::divideEps" ref="ae5f0415105b2a97cccb93f3da9ddaead" args="(double interval, double steps)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">double QwtScaleArithmetic::divideEps </td> <td>(</td> <td class="paramtype">double </td> <td class="paramname"><em>intervalSize</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>numSteps</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Divide an interval into steps. </p> <p><img class="formulaInl" alt="$stepSize = (intervalSize - intervalSize * 10e^{-6}) / numSteps$" src="form_3.png"/></p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">intervalSize</td><td>Interval size </td></tr> <tr><td class="paramname">numSteps</td><td>Number of steps </td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Step size </dd></dl> </div> </div> <a class="anchor" id="a0cf6b5993a700cf0f00175486bd57b5b"></a><!-- doxytag: member="QwtScaleArithmetic::floor125" ref="a0cf6b5993a700cf0f00175486bd57b5b" args="(double x)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">double QwtScaleArithmetic::floor125 </td> <td>(</td> <td class="paramtype">double </td> <td class="paramname"><em>x</em></td><td>)</td> <td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Find the largest value out of {1,2,5}*10^n with an integer number n which is smaller than or equal to x. </p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>Input value </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="a924d97f2e5db236f43f4d65e430e09c1"></a><!-- doxytag: member="QwtScaleArithmetic::floorEps" ref="a924d97f2e5db236f43f4d65e430e09c1" args="(double value, double intervalSize)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">double QwtScaleArithmetic::floorEps </td> <td>(</td> <td class="paramtype">double </td> <td class="paramname"><em>value</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>intervalSize</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td><code> [static]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Floor a value, relative to an interval</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">value</td><td>Value to floor </td></tr> <tr><td class="paramname">intervalSize</td><td>Interval size</td></tr> </table> </dd> </dl> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_scale_arithmetic.html#a924d97f2e5db236f43f4d65e430e09c1">floorEps()</a> </dd></dl> </div> </div> </div> <hr class="footer"/><address class="footer"><small>Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </small></address> </body> </html>