88 lines
4.5 KiB
HTML
88 lines
4.5 KiB
HTML
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<!DOCTYPE html>
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Inc.
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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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 no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled "GNU Free
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Documentation License." -->
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<title>SRFI-27 Default Random Source (Guile Reference Manual)</title>
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<meta name="description" content="SRFI-27 Default Random Source (Guile Reference Manual)">
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="SRFI_002d27.html" rel="up" title="SRFI-27">
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<link href="SRFI_002d27-Random-Sources.html" rel="next" title="SRFI-27 Random Sources">
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<body lang="en">
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<div class="subsubsection-level-extent" id="SRFI_002d27-Default-Random-Source">
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<div class="nav-panel">
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<p>
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Next: <a href="SRFI_002d27-Random-Sources.html" accesskey="n" rel="next">Random Sources</a>, Up: <a href="SRFI_002d27.html" accesskey="u" rel="up">SRFI-27 - Sources of Random Bits</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<h4 class="subsubsection" id="The-Default-Random-Source"><span>7.5.19.1 The Default Random Source<a class="copiable-link" href="#The-Default-Random-Source"> ¶</a></span></h4>
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<a class="index-entry-id" id="index-SRFI_002d27-1"></a>
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<dl class="first-deffn first-defun-alias-first-deffn">
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<dt class="deffn defun-alias-deffn" id="index-random_002dinteger"><span class="category-def">Function: </span><span><strong class="def-name">random-integer</strong> <var class="def-var-arguments">n</var><a class="copiable-link" href="#index-random_002dinteger"> ¶</a></span></dt>
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<dd><p>Return a random number between zero (inclusive) and <var class="var">n</var> (exclusive),
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using the default random source. The numbers returned have a uniform
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distribution.
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</p></dd></dl>
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<dl class="first-deffn first-defun-alias-first-deffn">
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<dt class="deffn defun-alias-deffn" id="index-random_002dreal"><span class="category-def">Function: </span><span><strong class="def-name">random-real</strong><a class="copiable-link" href="#index-random_002dreal"> ¶</a></span></dt>
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<dd><p>Return a random number in (0,1), using the default random source. The
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numbers returned have a uniform distribution.
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</p></dd></dl>
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<dl class="first-deffn first-defun-alias-first-deffn">
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<dt class="deffn defun-alias-deffn" id="index-default_002drandom_002dsource"><span class="category-def">Function: </span><span><strong class="def-name">default-random-source</strong><a class="copiable-link" href="#index-default_002drandom_002dsource"> ¶</a></span></dt>
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<dd><p>A random source from which <code class="code">random-integer</code> and <code class="code">random-real</code>
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have been derived using <code class="code">random-source-make-integers</code> and
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<code class="code">random-source-make-reals</code> (see <a class="pxref" href="SRFI_002d27-Random-Number-Generators.html">Obtaining random number generator procedures</a>
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for those procedures). Note that an assignment to
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<code class="code">default-random-source</code> does not change <code class="code">random-integer</code> or
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<code class="code">random-real</code>; it is also strongly recommended not to assign a new
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value.
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</p></dd></dl>
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</div>
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</body>
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</html>
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