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68 lines
2.9 KiB
HTML
68 lines
2.9 KiB
HTML
4 years ago
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<title>__int128 - Using the GNU Compiler Collection (GCC)</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC)">
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<link rel="up" href="C-Extensions.html#C-Extensions" title="C Extensions">
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<link rel="prev" href="Conditionals.html#Conditionals" title="Conditionals">
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Copyright (C) 1988-2015 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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</head>
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<body>
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<div class="node">
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<a name="__int128"></a>
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<a name="g_t_005f_005fint128"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Long-Long.html#Long-Long">Long Long</a>,
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Previous: <a rel="previous" accesskey="p" href="Conditionals.html#Conditionals">Conditionals</a>,
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Up: <a rel="up" accesskey="u" href="C-Extensions.html#C-Extensions">C Extensions</a>
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<hr>
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</div>
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<h3 class="section">6.8 128-bit Integers</h3>
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<p><a name="index-g_t_0040code_007b_005f_005fint128_007d-data-types-2904"></a>
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As an extension the integer scalar type <code>__int128</code> is supported for
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targets which have an integer mode wide enough to hold 128 bits.
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Simply write <code>__int128</code> for a signed 128-bit integer, or
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<code>unsigned __int128</code> for an unsigned 128-bit integer. There is no
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support in GCC for expressing an integer constant of type <code>__int128</code>
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for targets with <code>long long</code> integer less than 128 bits wide.
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</body></html>
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