📄 bigint.html
字号:
<?xml version="1.0" ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<!-- saved from url=(0017)http://localhost/ -->
<script language="JavaScript" src="../../displayToc.js"></script>
<script language="JavaScript" src="../../tocParas.js"></script>
<script language="JavaScript" src="../../tocTab.js"></script>
<link rel="stylesheet" type="text/css" href="../../scineplex.css">
<title>Math::BigInt - Arbitrary size integer/float math package</title>
<link rel="stylesheet" href="../../Active.css" type="text/css" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rev="made" href="mailto:" />
</head>
<body>
<script>writelinks('__top__',2);</script>
<h1><a>Math::BigInt - Arbitrary size integer/float math package</a></h1>
<p><a name="__index__"></a></p>
<!-- INDEX BEGIN -->
<ul>
<li><a href="#name">NAME</a></li>
<li><a href="#synopsis">SYNOPSIS</a></li>
<li><a href="#description">DESCRIPTION</a></li>
<li><a href="#methods">METHODS</a></li>
<ul>
<li><a href="#config">config</a></li>
<li><a href="#accuracy">accuracy</a></li>
<li><a href="#precision">precision</a></li>
<li><a href="#brsft">brsft</a></li>
<li><a href="#new">new</a></li>
<li><a href="#bnan">bnan</a></li>
<li><a href="#bzero">bzero</a></li>
<li><a href="#binf">binf</a></li>
<li><a href="#bone">bone</a></li>
<li><a href="#is_one___is_zero___is_nan___is_inf__"><code>is_one()/is_zero()/is_nan()/is_inf()</code></a></li>
<li><a href="#is_pos___is_neg__"><code>is_pos()/is_neg()</code></a></li>
<li><a href="#is_odd___is_even___is_int__"><code>is_odd()/is_even()/is_int()</code></a></li>
<li><a href="#bcmp">bcmp</a></li>
<li><a href="#bacmp">bacmp</a></li>
<li><a href="#sign">sign</a></li>
<li><a href="#digit">digit</a></li>
<li><a href="#bneg">bneg</a></li>
<li><a href="#babs">babs</a></li>
<li><a href="#bnorm">bnorm</a></li>
<li><a href="#bnot">bnot</a></li>
<li><a href="#binc">binc</a></li>
<li><a href="#bdec">bdec</a></li>
<li><a href="#badd">badd</a></li>
<li><a href="#bsub">bsub</a></li>
<li><a href="#bmul">bmul</a></li>
<li><a href="#bdiv">bdiv</a></li>
<li><a href="#bmod">bmod</a></li>
<li><a href="#bmodinv">bmodinv</a></li>
<li><a href="#bmodpow">bmodpow</a></li>
<li><a href="#bpow">bpow</a></li>
<li><a href="#blsft">blsft</a></li>
<li><a href="#brsft">brsft</a></li>
<li><a href="#band">band</a></li>
<li><a href="#bior">bior</a></li>
<li><a href="#bxor">bxor</a></li>
<li><a href="#bnot">bnot</a></li>
<li><a href="#bsqrt">bsqrt</a></li>
<li><a href="#bfac">bfac</a></li>
<li><a href="#round">round</a></li>
<li><a href="#bround">bround</a></li>
<li><a href="#bfround">bfround</a></li>
<li><a href="#bfloor">bfloor</a></li>
<li><a href="#bceil">bceil</a></li>
<li><a href="#bgcd">bgcd</a></li>
<li><a href="#blcm">blcm</a></li>
<li><a href="#exponent">exponent</a></li>
<li><a href="#mantissa">mantissa</a></li>
<li><a href="#parts">parts</a></li>
<li><a href="#copy">copy</a></li>
<li><a href="#as_int">as_int</a></li>
<li><a href="#bsstr">bsstr</a></li>
<li><a href="#as_hex">as_hex</a></li>
<li><a href="#as_bin">as_bin</a></li>
</ul>
<li><a href="#accuracy_and_precision">ACCURACY and PRECISION</a></li>
<ul>
<li><a href="#precision_p">Precision P</a></li>
<li><a href="#accuracy_a">Accuracy A</a></li>
<li><a href="#fallback_f">Fallback F</a></li>
<li><a href="#rounding_mode_r">Rounding mode R</a></li>
</ul>
<li><a href="#infinity_and_not_a_number">Infinity and Not a Number</a></li>
<li><a href="#internals">INTERNALS</a></li>
<ul>
<li><a href="#math_library">MATH LIBRARY</a></li>
<li><a href="#sign">SIGN</a></li>
<li><a href="#mantissa____exponent___and_parts__">mantissa(), <code>exponent()</code> and <code>parts()</code></a></li>
</ul>
<li><a href="#examples">EXAMPLES</a></li>
<li><a href="#autocreating_constants">Autocreating constants</a></li>
<li><a href="#performance">PERFORMANCE</a></li>
<ul>
<li><a href="#alternative_math_libraries">Alternative math libraries</a></li>
<li><a href="#subclassing">SUBCLASSING</a></li>
</ul>
<li><a href="#subclassing_math__bigint">Subclassing Math::BigInt</a></li>
<li><a href="#upgrading">UPGRADING</a></li>
<ul>
<li><a href="#autoupgrade">Auto-upgrade</a></li>
</ul>
<li><a href="#bugs">BUGS</a></li>
<li><a href="#caveats">CAVEATS</a></li>
<li><a href="#license">LICENSE</a></li>
<li><a href="#see_also">SEE ALSO</a></li>
<li><a href="#authors">AUTHORS</a></li>
</ul>
<!-- INDEX END -->
<hr />
<p>
</p>
<hr />
<h1><a name="name">NAME</a></h1>
<p>Math::BigInt - Arbitrary size integer/float math package</p>
<p>
</p>
<hr />
<h1><a name="synopsis">SYNOPSIS</a></h1>
<pre>
<span class="keyword">use</span> <span class="variable">Math::BigInt</span><span class="operator">;</span>
</pre>
<pre>
<span class="comment"># or make it faster: install (optional) Math::BigInt::GMP</span>
<span class="comment"># and always use (it will fall back to pure Perl if the</span>
<span class="comment"># GMP library is not installed):</span>
</pre>
<pre>
<span class="keyword">use</span> <span class="variable">Math::BigInt</span> <span class="string">lib</span> <span class="operator">=></span> <span class="string">'GMP'</span><span class="operator">;</span>
</pre>
<pre>
<span class="keyword">my</span> <span class="variable">$str</span> <span class="operator">=</span> <span class="string">'1234567890'</span><span class="operator">;</span>
<span class="keyword">my</span> <span class="variable">@values</span> <span class="operator">=</span> <span class="operator">(</span><span class="number">64</span><span class="operator">,</span><span class="number">74</span><span class="operator">,</span><span class="number">18</span><span class="operator">);</span>
<span class="keyword">my</span> <span class="variable">$n</span> <span class="operator">=</span> <span class="number">1</span><span class="operator">;</span> <span class="keyword">my</span> <span class="variable">$sign</span> <span class="operator">=</span> <span class="string">'-'</span><span class="operator">;</span>
</pre>
<pre>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -