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106 lines
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106 lines
5.3 KiB
HTML
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<head>
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<title>Arithmetic on poly_ints (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="Arithmetic on poly_ints (GNU Compiler Collection (GCC) Internals)">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="poly_005fint.html#poly_005fint" rel="up" title="poly_int">
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<link href="Using-poly_005fint-with-C_002b_002b-arithmetic-operators.html#Using-poly_005fint-with-C_002b_002b-arithmetic-operators" rel="next" title="Using poly_int with C++ arithmetic operators">
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<a name="Arithmetic-on-poly_005fints"></a>
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<p>
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Next: <a href="Alignment-of-poly_005fints.html#Alignment-of-poly_005fints" accesskey="n" rel="next">Alignment of <code>poly_int</code>s</a>, Previous: <a href="Comparisons-involving-poly_005fint.html#Comparisons-involving-poly_005fint" accesskey="p" rel="prev">Comparisons involving <code>poly_int</code></a>, Up: <a href="poly_005fint.html#poly_005fint" accesskey="u" rel="up">poly_int</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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</div>
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<hr>
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<a name="Arithmetic-on-poly_005fints-1"></a>
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<h3 class="section">10.4 Arithmetic on <code>poly_int</code>s</h3>
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<p>Addition, subtraction, negation and bit inversion all work normally for
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<code>poly_int</code>s. Multiplication by a constant multiplier and left
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shifting by a constant shift amount also work normally. General
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multiplication of two <code>poly_int</code>s is not supported and is not
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useful in practice.
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</p>
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<p>Other operations are only conditionally supported: the operation
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might succeed or might fail, depending on the inputs.
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</p>
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<p>This section describes both types of operation.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Using-poly_005fint-with-C_002b_002b-arithmetic-operators.html#Using-poly_005fint-with-C_002b_002b-arithmetic-operators" accesskey="1">Using <code>poly_int</code> with C++ arithmetic operators</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="wi-arithmetic-on-poly_005fints.html#wi-arithmetic-on-poly_005fints" accesskey="2"><code>wi</code> arithmetic on <code>poly_int</code>s</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Division-of-poly_005fints.html#Division-of-poly_005fints" accesskey="3">Division of <code>poly_int</code>s</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Other-poly_005fint-arithmetic.html#Other-poly_005fint-arithmetic" accesskey="4">Other <code>poly_int</code> arithmetic</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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</table>
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</body>
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