haiku/docs/userguide/en/applications/apps-deskcalc.html
Joachim Seemer abc73d0a65 * Added a hint on using 3-letter file extensions to filetypes.html.
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<title>DeskCalc</title>
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<div class="logo">
<img src="../../images/logo.png" alt="logo" width="372" height="86" />
<div class="title">DeskCalc</div>
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<div class="content">
<h1><img src="../../images/apps-images/deskcalc-icon_64.png" alt="deskcalc-icon_64.png"
width="64" height="64" />DeskCalc</h1>
<table summary="layout" border="0" cellspacing="0" cellpadding="2">
<tr><td>Deskbar:</td><td style="width:15px;"></td><td><span class="menu">Applications</span></td></tr>
<tr><td>Location:</td><td></td><td><span class="path">/boot/system/apps/DeskCalc</span></td></tr>
<tr><td>Settings:</td><td></td><td><span class="path">~/config/settings/DeskCalc_settings</span></td></tr>
</table>
<p><br/></p>
<p>DeskCalc is a simple calculator that nevertheless has some nice features that aren't apparent on first sight.</p>
<img src="../images/apps-images/deskcalc.png" alt="deskcalc.png" />
<ul>
<li><p>DeskCalc understands much more than its simple keypad suggests.<br />
Besides the operators <tt>+</tt>, <tt>-</tt>, <tt>*</tt>, <tt>/</tt>, <tt>%</tt>, <tt>^</tt> and the constants <tt>pi</tt> and <tt>e</tt> the following math functions are supported:<br />
<tt>acos</tt>, <tt>asin</tt>, <tt>atan</tt>, <tt>atan2</tt>, <tt>ceil</tt>, <tt>cos</tt>, <tt>cosh</tt>, <tt>exp</tt>, <tt>floor</tt>, <tt>log</tt>, <tt>log10</tt>, <tt>pow</tt>, <tt>sin</tt>, <tt>sinh</tt>, <tt>sqrt</tt>, <tt>tan</tt>, <tt>tanh</tt>.</p></li>
<li><p>When it comes to user input, DeskCalc is quite tolerant:<br />
<tt>/</tt>, <tt>:</tt>, <tt>\</tt> are all interpreted as division operators,<br />
<tt>*</tt>, <tt>x</tt> are valid symbols for multiplication.<br />
Also, be aware that <tt>.</tt> and <tt>,</tt> are both considered floating points, which means you mustn't use them as 1000 separators.</p></li>
<li><p>Right-clicking offers these options:</p>
<table summary="layout" border="0" cellspacing="0" cellpadding="2">
<tr><td><span class="menu">Auto Num Lock</span></td><td style="width:15px;"></td><td>automatically activates the number block when launching DeskCalc</td></tr>
<tr><td><span class="menu">Audio Feedback</span></td><td></td><td>plays a sound when showing a result</td></tr>
<tr><td><span class="menu">Show Keypad</span></td><td></td><td>hides the keypad when deactivated</td></tr>
</table></li>
<li><p>You can resize the calculator until it fits your needs and then put it as Replicant onto the Desktop via drag&drop of the symbol in the bottom right corner. Make sure <span class="menu">Show Replicants</span> is activated in the Deskbar.</p></li>
<li><p>The keypad can be colored with a drag&amp;drop from any color well, e.g. from <span class="app">Icon-O-Matic</span>.</p></li>
<li><p>You can move up and down in a history of past calculations with <span class="key">&uarr;</span><span class="key">&darr;</span>.</p></li>
<li><p>You can select DeskCalc's contents and drag&amp;drop it into any application. Or you drop it into a Tracker window or onto the Desktop and a text file with that clipping is created there.</p>
<p>Even better, the reverse is also possible:<br />
Create clippings as described at various stages of your calculation and go back to them by drag&amp;dropping them back into DeskCalc.<br />
Or you drag&amp;drop a calculation directly out of an email onto DeskCalc.</p></li>
<li><p>DeskCalc can be used in Terminal. Just put the expression in double quotes, like this:</p>
<pre class="terminal">~> DeskCalc "sin(45)*(cos(12)+3.45)"
3.6536554673202546181795194727005826674359494735820338441084848</pre></li>
</ul>
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