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153 lines
7.5 KiB
HTML
153 lines
7.5 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>I/O of 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="I/O of 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="Integer-Random-Numbers.html#Integer-Random-Numbers" rel="next" title="Integer Random Numbers">
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<link href="Integer-Logic-and-Bit-Fiddling.html#Integer-Logic-and-Bit-Fiddling" rel="prev" title="Integer Logic and Bit Fiddling">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.smalllisp {font-size: smaller}
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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="I_002fO-of-Integers"></a>
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<div class="header">
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<p>
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Next: <a href="Integer-Random-Numbers.html#Integer-Random-Numbers" accesskey="n" rel="next">Integer Random Numbers</a>, Previous: <a href="Integer-Logic-and-Bit-Fiddling.html#Integer-Logic-and-Bit-Fiddling" accesskey="p" rel="prev">Integer Logic and Bit Fiddling</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="Input-and-Output-Functions"></a>
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<h3 class="section">5.12 Input and Output Functions</h3>
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<a name="index-Integer-input-and-output-functions"></a>
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<a name="index-Input-functions"></a>
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<a name="index-Output-functions"></a>
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<a name="index-I_002fO-functions"></a>
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<p>Functions that perform input from a stdio stream, and functions that output to
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a stdio stream, of <code>mpz</code> numbers. Passing a <code>NULL</code> pointer for a
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<var>stream</var> argument to any of these functions will make them read from
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<code>stdin</code> and write to <code>stdout</code>, respectively.
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</p>
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<p>When using any of these functions, it is a good idea to include <samp>stdio.h</samp>
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before <samp>gmp.h</samp>, since that will allow <samp>gmp.h</samp> to define prototypes
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for these functions.
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</p>
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<p>See also <a href="Formatted-Output.html#Formatted-Output">Formatted Output</a> and <a href="Formatted-Input.html#Formatted-Input">Formatted Input</a>.
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</p>
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<dl>
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<dt><a name="index-mpz_005fout_005fstr"></a>Function: <em>size_t</em> <strong>mpz_out_str</strong> <em>(FILE *<var>stream</var>, int <var>base</var>, const mpz_t <var>op</var>)</em></dt>
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<dd><p>Output <var>op</var> on stdio stream <var>stream</var>, as a string of digits in base
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<var>base</var>. The base argument may vary from 2 to 62 or from -2 to
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-36.
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</p>
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<p>For <var>base</var> in the range 2..36, digits and lower-case letters are used; for
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-2..-36, digits and upper-case letters are used; for 37..62,
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digits, upper-case letters, and lower-case letters (in that significance order)
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are used.
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</p>
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<p>Return the number of bytes written, or if an error occurred, return 0.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpz_005finp_005fstr"></a>Function: <em>size_t</em> <strong>mpz_inp_str</strong> <em>(mpz_t <var>rop</var>, FILE *<var>stream</var>, int <var>base</var>)</em></dt>
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<dd><p>Input a possibly white-space preceded string in base <var>base</var> from stdio
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stream <var>stream</var>, and put the read integer in <var>rop</var>.
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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>Return the number of bytes read, or if an error occurred, return 0.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpz_005fout_005fraw"></a>Function: <em>size_t</em> <strong>mpz_out_raw</strong> <em>(FILE *<var>stream</var>, const mpz_t <var>op</var>)</em></dt>
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<dd><p>Output <var>op</var> on stdio stream <var>stream</var>, in raw binary format. The
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integer is written in a portable format, with 4 bytes of size information, and
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that many bytes of limbs. Both the size and the limbs are written in
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decreasing significance order (i.e., in big-endian).
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</p>
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<p>The output can be read with <code>mpz_inp_raw</code>.
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</p>
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<p>Return the number of bytes written, or if an error occurred, return 0.
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</p>
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<p>The output of this can not be read by <code>mpz_inp_raw</code> from GMP 1, because
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of changes necessary for compatibility between 32-bit and 64-bit machines.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpz_005finp_005fraw"></a>Function: <em>size_t</em> <strong>mpz_inp_raw</strong> <em>(mpz_t <var>rop</var>, FILE *<var>stream</var>)</em></dt>
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<dd><p>Input from stdio stream <var>stream</var> in the format written by
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<code>mpz_out_raw</code>, and put the result in <var>rop</var>. Return the number of
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bytes read, or if an error occurred, return 0.
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</p>
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<p>This routine can read the output from <code>mpz_out_raw</code> also from GMP 1, in
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spite of changes necessary for compatibility between 32-bit and 64-bit
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machines.
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</p></dd></dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Integer-Random-Numbers.html#Integer-Random-Numbers" accesskey="n" rel="next">Integer Random Numbers</a>, Previous: <a href="Integer-Logic-and-Bit-Fiddling.html#Integer-Logic-and-Bit-Fiddling" accesskey="p" rel="prev">Integer Logic and Bit Fiddling</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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</body>
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</html>
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