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<a name="nearbyint"></a>
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Next: <a href="nextafter.html#nextafter" accesskey="n" rel="next">nextafter</a>, Previous: <a href="nan.html#nan" accesskey="p" rel="prev">nan</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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<a name="nearbyint_002c-nearbyintf_002d_002d_002dround-to-integer"></a>
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<h3 class="section">1.43 <code>nearbyint</code>, <code>nearbyintf</code>—round to integer</h3>
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<a name="index-nearbyint"></a>
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<a name="index-nearbyintf"></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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double nearbyint(double <var>x</var>);
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float nearbyintf(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>nearbyint</code> functions round their argument to an integer value in
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floating-point format, using the current rounding direction and
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(supposedly) without raising the "inexact" floating-point exception.
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See the <code>rint</code> functions for the same function with the "inexact"
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floating-point exception being raised when appropriate.
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</p>
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<br>
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<p><strong>Bugs</strong><br>
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Newlib does not support the floating-point exception model, so that
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the floating-point exception control is not present and thereby what may
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be seen will be compiler and hardware dependent in this regard.
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The Newlib <code>nearbyint</code> functions are identical to the <code>rint</code>
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functions with respect to the floating-point exception behavior, and
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will cause the "inexact" exception to be raised for most targets.
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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>Portability</strong><br>
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ANSI C, POSIX
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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>rint</code>, <code>round</code>
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</p>
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<br>
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