core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas/p_warn_impl_i2f_conv.htm
author fturovic <frank.turovich@nokia.com>
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revised x86 compiler dates, graphics, CSS, and release notes
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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  <head>
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    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
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    <meta http-equiv="Content-Style-Type" content="text/css" />
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    <meta name="LASTUPDATED" content="06/17/05 11:09:43" />
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    <title>warn_impl_i2f_conv</title>
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	<link rel="StyleSheet" href="../../book.css" type="text/css"/>
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  </head>
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<body>
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<h3>warn_impl_i2f_conv</h3>
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<p>Controls the issuing of warnings for implicit int-to-float conversions.</p>
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<h5>Syntax</h5>
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  <p class="code">#pragma warn_impl_i2f_conv on | off | reset
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  </p>
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  <h5>Targets</h5>
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  All platforms.<br />
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  <h5>Remarks</h5>
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  <p>If you enable this pragma, the compiler issues a warning for implicitly converting integral values to floating-point values. Listing 10.38 provides an example.</p>
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  <div class="listing">
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      <h4>Listing 10.38 Example of Implicit int-to-float Conversion</h4>
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      <p>#pragma warn_implicitconv on // required to enable warnings<br />
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      #pragma warn_impl_i2f_conv on // enable conversion warning </p>
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      <p>float f1, f2;<br />
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    signed int si1, si2;</p>
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    <p>int main()<br />
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    {<br />
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    f1 = si1; // WARNING</p>
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    <p>#pragma warn_impl_i2f_conv off // disable conversion warning<br />
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    f2 = si2; // OK<br />
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    }</p>
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  </div>
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  <p>This pragma corresponds to the Integer to Float setting . To check this setting, use <span class="code"><span class="code">__option (warn_impl_i</span>2f_conv)</span>, described in <a href="../symbols/sym_settings.htm">Checking Settings</a>. The default setting is <span class="code">off</span>.</p>
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<p class="note"><strong>NOTE</strong> The setting of this pragma is ignored unless <a href="p_warn_implicitconv.htm">warn_implicitconv</a> is on.</p>
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<p></p>
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<div id="footer">Copyright &copy; 2010 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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</body>
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</html>