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106 lines
5.3 KiB
HTML
106 lines
5.3 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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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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<meta name="keywords" content="Arithmetic on poly_ints (GNU Compiler Collection (GCC) Internals)">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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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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<link href="Sorting-poly_005fints.html#Sorting-poly_005fints" rel="prev" title="Sorting poly_ints">
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</head>
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<body lang="en">
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<a name="Arithmetic-on-poly_005fints"></a>
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<div class="header">
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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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</html>
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