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reactos/rosapps/roscalc/docs/Help.en/display_format.htm

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New version of calc written by Carlo Bramini (carlo(dot)bramix AT libero.it) Better than the one we currently have. For now in rosapps, so we can test it, if it's all working fine, we should replace the wine one. Changes by me: use pow() instead of cbrt(), as cbrt doesn't work in our tree. I imported the whole codebase, although the mpfr files are not used. I moved the localizations to "lang" and the icons to "res" subfolder. svn path=/trunk/; revision=31512
2007-12-31 05:51:52 +00:00
<html>
<head>
<title>DISPLAY FORMAT</title>
</head>
<body>
<h2 style="margin-top: 0; margin-bottom: 0">DISPLAY FORMAT</h2>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">You can enter digits by pressing the buttons
mentioned in the
<a href="how_to_input_numbers.htm">HOW TO INPUT NUMBERS</a> section.</p>
<p style="margin-top: 0; margin-bottom: 0">These numbers can be entered into four different bases:</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Hex.PNG" width="53" height="24">
hexadecimal.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Dec.PNG" width="53" height="24">
decimal.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Oct.PNG" width="53" height="24">
octal.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Bin.PNG" width="53" height="24">
binary
system.</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">A number shown into the output display can be easily converted from a numeric base to another
by simply changing the base on the fly.</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">When working with pure decimal numbers, the user can enter the numbers in two ways:</p>
<p style="margin-top: 0; margin-bottom: 0"><u><i>Normal mode</i></u>: each number is entered
its integer part and, eventually, its fractional part.</p>
<p style="margin-top: 0; margin-bottom: 0"><u><i>Exponential mode</i></u>: the number is entered by typing a mantissa and then an exponent. This
method allows you to write very big or very small numbers that you would not be able to type
in a different manner.</p>
<p style="margin-top: 0; margin-bottom: 0">You can use it only when the calculator is configured in scientific
mode.</p>
<p style="margin-top: 0; margin-bottom: 0">However, there are some limits even when you work with exponential notation.</p>
<p style="margin-top: 0; margin-bottom: 0">These limits are:</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0" align="center">-1.79769313486231570e+308 &lt;= x &lt;= -2.22507385850720140e-308</p>
<p style="margin-top: 0; margin-bottom: 0" align="center">2.22507385850720140e-308 &lt;= x &lt;= 1.79769313486231570e+308</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">The exponential input mode is activated by the
<img border="0" src="images/Exp.PNG"> button.</p>
<p style="margin-top: 0; margin-bottom: 0">After the mantissa has been typed, by pressing
this button you will be able to enter the exponent.</p>
<p style="margin-top: 0; margin-bottom: 0">When the support for GNU multi-precision libraries is activated, these limits rise greatly to 64 displayed digits for the mantissa and 8 digits for the exponent, both with sign.</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">When the calculator is in [HEX], [OCT] or [BIN] state, it's possible to apply a masking for
limiting the range of the numbers.</p>
<p style="margin-top: 0; margin-bottom: 0">Four range are available:</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Qword.PNG" width="61" height="24">
It limits the integers to 64 bit numbers.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Dword.PNG" width="61" height="24">
It limits the integers to 32 bit numbers.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Word.PNG" width="61" height="24">
It limits the integers to 16 bit numbers.</p>
<p style="margin-top: 0; margin-bottom: 0"><img border="0" src="images/Byte.PNG" width="61" height="24">
It limits the integers to 8 bit numbers.</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
</body>
</html>
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