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117 lines
5.9 KiB
HTML
117 lines
5.9 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>Assigning Integers (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="Assigning Integers (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="Integer-Functions.html#Integer-Functions" rel="up" title="Integer Functions">
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<link href="Simultaneous-Integer-Init-_0026-Assign.html#Simultaneous-Integer-Init-_0026-Assign" rel="next" title="Simultaneous Integer Init & Assign">
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<link href="Initializing-Integers.html#Initializing-Integers" rel="prev" title="Initializing Integers">
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<style type="text/css">
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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="Assigning-Integers"></a>
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<div class="header">
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<p>
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Next: <a href="Simultaneous-Integer-Init-_0026-Assign.html#Simultaneous-Integer-Init-_0026-Assign" accesskey="n" rel="next">Simultaneous Integer Init & Assign</a>, Previous: <a href="Initializing-Integers.html#Initializing-Integers" accesskey="p" rel="prev">Initializing Integers</a>, Up: <a href="Integer-Functions.html#Integer-Functions" accesskey="u" rel="up">Integer Functions</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="Assignment-Functions"></a>
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<h3 class="section">5.2 Assignment Functions</h3>
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<a name="index-Integer-assignment-functions"></a>
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<a name="index-Assignment-functions"></a>
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<p>These functions assign new values to already initialized integers
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(see <a href="Initializing-Integers.html#Initializing-Integers">Initializing Integers</a>).
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</p>
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<dl>
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<dt><a name="index-mpz_005fset"></a>Function: <em>void</em> <strong>mpz_set</strong> <em>(mpz_t <var>rop</var>, const mpz_t <var>op</var>)</em></dt>
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<dt><a name="index-mpz_005fset_005fui"></a>Function: <em>void</em> <strong>mpz_set_ui</strong> <em>(mpz_t <var>rop</var>, unsigned long int <var>op</var>)</em></dt>
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<dt><a name="index-mpz_005fset_005fsi"></a>Function: <em>void</em> <strong>mpz_set_si</strong> <em>(mpz_t <var>rop</var>, signed long int <var>op</var>)</em></dt>
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<dt><a name="index-mpz_005fset_005fd"></a>Function: <em>void</em> <strong>mpz_set_d</strong> <em>(mpz_t <var>rop</var>, double <var>op</var>)</em></dt>
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<dt><a name="index-mpz_005fset_005fq"></a>Function: <em>void</em> <strong>mpz_set_q</strong> <em>(mpz_t <var>rop</var>, const mpq_t <var>op</var>)</em></dt>
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<dt><a name="index-mpz_005fset_005ff"></a>Function: <em>void</em> <strong>mpz_set_f</strong> <em>(mpz_t <var>rop</var>, const mpf_t <var>op</var>)</em></dt>
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<dd><p>Set the value of <var>rop</var> from <var>op</var>.
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</p>
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<p><code>mpz_set_d</code>, <code>mpz_set_q</code> and <code>mpz_set_f</code> truncate <var>op</var> to
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make it an integer.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpz_005fset_005fstr"></a>Function: <em>int</em> <strong>mpz_set_str</strong> <em>(mpz_t <var>rop</var>, const char *<var>str</var>, int <var>base</var>)</em></dt>
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<dd><p>Set the value of <var>rop</var> from <var>str</var>, a null-terminated C string in base
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<var>base</var>. White space is allowed in the string, and is simply ignored.
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</p>
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<p>The <var>base</var> may vary from 2 to 62, or if <var>base</var> is 0, then the leading
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characters are used: <code>0x</code> and <code>0X</code> for hexadecimal, <code>0b</code> and
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<code>0B</code> for binary, <code>0</code> for octal, or decimal otherwise.
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</p>
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<p>For bases up to 36, case is ignored; upper-case and lower-case letters have
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the same value. For bases 37 to 62, upper-case letter represent the usual
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10..35 while lower-case letter represent 36..61.
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</p>
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<p>This function returns 0 if the entire string is a valid number in base
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<var>base</var>. Otherwise it returns -1.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpz_005fswap"></a>Function: <em>void</em> <strong>mpz_swap</strong> <em>(mpz_t <var>rop1</var>, mpz_t <var>rop2</var>)</em></dt>
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<dd><p>Swap the values <var>rop1</var> and <var>rop2</var> efficiently.
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</p></dd></dl>
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</body>
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</html>
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