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130 lines
5.3 KiB
HTML
130 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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<!-- This manual describes how to install and use the GNU multiple precision
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arithmetic library, version 6.1.0.
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Copyright 1991, 1993-2015 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document under
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the terms of the GNU Free Documentation License, Version 1.3 or any later
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version published by the Free Software Foundation; with no Invariant Sections,
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with the Front-Cover Texts being "A GNU Manual", and with the Back-Cover
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Texts being "You have freedom to copy and modify this GNU Manual, like GNU
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software". A copy of the license is included in
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GNU Free Documentation License. -->
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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>Headers and Libraries (GNU MP 6.1.0)</title>
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<meta name="description" content="How to install and use the GNU multiple precision arithmetic library, version 6.1.0.">
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<meta name="keywords" content="Headers and Libraries (GNU MP 6.1.0)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="GMP-Basics.html#GMP-Basics" rel="up" title="GMP Basics">
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<link href="Nomenclature-and-Types.html#Nomenclature-and-Types" rel="next" title="Nomenclature and Types">
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<link href="GMP-Basics.html#GMP-Basics" rel="prev" title="GMP Basics">
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<style type="text/css">
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Headers-and-Libraries"></a>
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<div class="header">
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<p>
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Next: <a href="Nomenclature-and-Types.html#Nomenclature-and-Types" accesskey="n" rel="next">Nomenclature and Types</a>, Previous: <a href="GMP-Basics.html#GMP-Basics" accesskey="p" rel="prev">GMP Basics</a>, Up: <a href="GMP-Basics.html#GMP-Basics" accesskey="u" rel="up">GMP Basics</a> [<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Headers-and-Libraries-1"></a>
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<h3 class="section">3.1 Headers and Libraries</h3>
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<a name="index-Headers"></a>
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<a name="index-gmp_002eh"></a>
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<a name="index-Include-files"></a>
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<a name="index-_0023include"></a>
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<p>All declarations needed to use GMP are collected in the include file
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<samp>gmp.h</samp>. It is designed to work with both C and C++ compilers.
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</p>
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<div class="example">
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<pre class="example">#include <gmp.h>
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</pre></div>
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<a name="index-stdio_002eh"></a>
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<p>Note however that prototypes for GMP functions with <code>FILE *</code> parameters
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are only provided if <code><stdio.h></code> is included too.
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</p>
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<div class="example">
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<pre class="example">#include <stdio.h>
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#include <gmp.h>
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</pre></div>
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<a name="index-stdarg_002eh"></a>
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<p>Likewise <code><stdarg.h></code> is required for prototypes with <code>va_list</code>
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parameters, such as <code>gmp_vprintf</code>. And <code><obstack.h></code> for prototypes
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with <code>struct obstack</code> parameters, such as <code>gmp_obstack_printf</code>, when
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available.
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</p>
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<a name="index-Libraries"></a>
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<a name="index-Linking"></a>
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<a name="index-libgmp"></a>
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<p>All programs using GMP must link against the <samp>libgmp</samp> library. On a
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typical Unix-like system this can be done with ‘<samp>-lgmp</samp>’, for example
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</p>
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<div class="example">
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<pre class="example">gcc myprogram.c -lgmp
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</pre></div>
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<a name="index-libgmpxx"></a>
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<p>GMP C++ functions are in a separate <samp>libgmpxx</samp> library. This is built
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and installed if C++ support has been enabled (see <a href="Build-Options.html#Build-Options">Build Options</a>). For
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example,
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</p>
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<div class="example">
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<pre class="example">g++ mycxxprog.cc -lgmpxx -lgmp
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</pre></div>
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<a name="index-Libtool"></a>
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<p>GMP is built using Libtool and an application can use that to link if desired,
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see <a href="http://www.gnu.org/software/libtool/manual/html_node/index.html#Top">GNU Libtool</a> in <cite>GNU Libtool</cite>.
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</p>
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<p>If GMP has been installed to a non-standard location then it may be necessary
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to use ‘<samp>-I</samp>’ and ‘<samp>-L</samp>’ compiler options to point to the right
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directories, and some sort of run-time path for a shared library.
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</p>
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</body>
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</html>
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