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<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.
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<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.
<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.
<!-- If it did, there would only be one of each precision and signedness. -->
<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 N, the value is reduced
modulo 2^N to be within range of the type; no signal is raised.
<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><span class="samp">>></span></samp>’ acts
on negative numbers by sign extension.
<p>GCC does not use the latitude given in C99 and C11 only to treat certain
aspects of signed ‘<samp><span class="samp"><<</span></samp>’ as undefined, but this is subject to
change.
<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.
</ul>
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