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100 lines
3.7 KiB
HTML
100 lines
3.7 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>lrint (LIBM)</title>
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<meta name="description" content="lrint (LIBM)">
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<meta name="keywords" content="lrint (LIBM)">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Math.html#Math" rel="up" title="Math">
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<link href="lround.html#lround" rel="next" title="lround">
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</head>
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<body lang="en">
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<a name="lrint"></a>
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<div class="header">
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<p>
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Next: <a href="lround.html#lround" accesskey="n" rel="next">lround</a>, Previous: <a href="logb.html#logb" accesskey="p" rel="prev">logb</a>, Up: <a href="Math.html#Math" accesskey="u" rel="up">Math</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="lrint_002c-lrintf_002c-llrint_002c-llrintf_002d_002d_002dround-to-integer"></a>
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<h3 class="section">1.39 <code>lrint</code>, <code>lrintf</code>, <code>llrint</code>, <code>llrintf</code>—round to integer</h3>
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<a name="index-lrint"></a>
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<a name="index-lrintf"></a>
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<a name="index-llrint"></a>
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<a name="index-llrintf"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <math.h>
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long int lrint(double <var>x</var>);
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long int lrintf(float <var>x</var>);
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long long int llrint(double <var>x</var>);
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long long int llrintf(float <var>x</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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The <code>lrint</code> and <code>llrint</code> functions round their argument to the nearest
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integer value, using the current rounding direction. If the rounded value is
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outside the range of the return type, the numeric result is unspecified. A
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range error may occur if the magnitude of <var>x</var> is too large.
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The "inexact" floating-point exception is raised in implementations that
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support it when the result differs in value from the argument (i.e., when
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a fraction actually has been truncated).
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<var>x</var> rounded to an integral value, using the current rounding direction.
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</p>
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<br>
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<p><strong>See Also</strong><br>
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<code>lround</code>
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</p>
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<br>
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<p><strong>Portability</strong><br>
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ANSI C, POSIX
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</p>
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<br>
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</body>
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</html>
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