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core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas_x86/p_ten_byte_long_double.htm
author Deepak Modgil <Deepak.Modgil@Nokia.com>
Fri, 03 Apr 2009 23:33:03 +0100
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<title>ten_byte_long_double</title>
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<link rel="StyleSheet" href="../../book.css" type="text/css"/>
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<h3>ten_byte_long_double</h3>
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<p>  Changes the size of the long double to 80-bits (10 bytes) allowing the full precision and range of extended precision or temporary real format used in x86 floating point registers.</p>
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<h5>Syntax</h5>
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  <p class="code">#pragma ten_byte_long_double on | off | reset</p>
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  <h5>Targets</h5>
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  Intel x86<br />
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  <h5>Remarks</h5>
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  <p>The range is approximately <span class="code">3.632^10-4932</span> to <span class="code">1.190^10+4932</span>.</p>
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  <p>Note there is no indication in the object code about what long double size was used to create it, thus the linker cannot warn on mismatches. To ensure a match, all libraries and programs exchanging long double must be rebuilt.</p>
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  <p>The default setting is off, where both long double and double are both 64-bits.<br />
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</p>
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  <div id="footer">Copyright &copy; 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div>
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FCL/sftools/dev/ide/carbidecpp