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 <a name="Integers-implementation"></a>
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 Next: <a href="Floating-point-implementation.html#Floating-point-implementation" accesskey="n" rel="next">Floating point implementation</a>, Previous: <a href="Characters-implementation.html#Characters-implementation" accesskey="p" rel="prev">Characters implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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 <hr>
 <a name="Integers"></a>
 <h3 class="section">4.5 Integers</h3>

 <ul>
 <li> <cite>Any extended integer types that exist in the implementation (C99
 and C11 6.2.5).</cite>

 <p>GCC does not support any extended integer types.
 </p>
 </li><li> <cite>Whether signed integer types are represented using sign and magnitude,
 two&rsquo;s complement, or one&rsquo;s complement, and whether the extraordinary value
 is a trap representation or an ordinary value (C99 and C11 6.2.6.2).</cite>

 <p>GCC supports only two&rsquo;s complement integer types, and all bit patterns
 are ordinary values.
 </p>
 </li><li> <cite>The rank of any extended integer type relative to another extended
 integer type with the same precision (C99 and C11 6.3.1.1).</cite>

 <p>GCC does not support any extended integer types.
 </p>
 </li><li> <cite>The result of, or the signal raised by, converting an integer to a
 signed integer type when the value cannot be represented in an object of
 that type (C90 6.2.1.2, C99 and C11 6.3.1.3).</cite>

 <p>For conversion to a type of width <em>N</em>, the value is reduced
 modulo <em>2^N</em> to be within range of the type; no signal is raised.
 </p>
 </li><li> <cite>The results of some bitwise operations on signed integers (C90
 6.3, C99 and C11 6.5).</cite>

 <p>Bitwise operators act on the representation of the value including
 both the sign and value bits, where the sign bit is considered
 immediately above the highest-value value bit.  Signed &lsquo;<samp>&gt;&gt;</samp>&rsquo; acts
 on negative numbers by sign extension.
 </p>
 <p>GCC does not use the latitude given in C99 and C11 only to treat certain
 aspects of signed &lsquo;<samp>&lt;&lt;</samp>&rsquo; as undefined, but this is subject to
 change.
 </p>
 </li><li> <cite>The sign of the remainder on integer division (C90 6.3.5).</cite>

 <p>GCC always follows the C99 and C11 requirement that the result of division is
 truncated towards zero.
 </p>
 </li></ul>

 <hr>
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 <p>
 Next: <a href="Floating-point-implementation.html#Floating-point-implementation" accesskey="n" rel="next">Floating point implementation</a>, Previous: <a href="Characters-implementation.html#Characters-implementation" accesskey="p" rel="prev">Characters implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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	<a name="Integers-implementation"></a>
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	<p>
	Next: <a href="Floating-point-implementation.html#Floating-point-implementation" accesskey="n" rel="next">Floating point implementation</a>, Previous: <a href="Characters-implementation.html#Characters-implementation" accesskey="p" rel="prev">Characters implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a>   [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
	</div>
	<hr>
	<a name="Integers"></a>
	<h3 class="section">4.5 Integers</h3>

	<ul>
	<li> <cite>Any extended integer types that exist in the implementation (C99
	and C11 6.2.5).</cite>

	<p>GCC does not support any extended integer types.
	</p>
	</li><li> <cite>Whether signed integer types are represented using sign and magnitude,
	two’s complement, or one’s complement, and whether the extraordinary value
	is a trap representation or an ordinary value (C99 and C11 6.2.6.2).</cite>

	<p>GCC supports only two’s complement integer types, and all bit patterns
	are ordinary values.
	</p>
	</li><li> <cite>The rank of any extended integer type relative to another extended
	integer type with the same precision (C99 and C11 6.3.1.1).</cite>

	<p>GCC does not support any extended integer types.
	</p>
	</li><li> <cite>The result of, or the signal raised by, converting an integer to a
	signed integer type when the value cannot be represented in an object of
	that type (C90 6.2.1.2, C99 and C11 6.3.1.3).</cite>

	<p>For conversion to a type of width <em>N</em>, the value is reduced
	modulo <em>2^N</em> to be within range of the type; no signal is raised.
	</p>
	</li><li> <cite>The results of some bitwise operations on signed integers (C90
	6.3, C99 and C11 6.5).</cite>

	<p>Bitwise operators act on the representation of the value including
	both the sign and value bits, where the sign bit is considered
	immediately above the highest-value value bit. Signed ‘<samp>>></samp>’ acts
	on negative numbers by sign extension.
	</p>
	<p>GCC does not use the latitude given in C99 and C11 only to treat certain
	aspects of signed ‘<samp><<</samp>’ as undefined, but this is subject to
	change.
	</p>
	</li><li> <cite>The sign of the remainder on integer division (C90 6.3.5).</cite>

	<p>GCC always follows the C99 and C11 requirement that the result of division is
	truncated towards zero.
	</p>
	</li></ul>

	<hr>
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	<p>
	Next: <a href="Floating-point-implementation.html#Floating-point-implementation" accesskey="n" rel="next">Floating point implementation</a>, Previous: <a href="Characters-implementation.html#Characters-implementation" accesskey="p" rel="prev">Characters implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</a>   [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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