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math_cmplx.htm
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<!DOCTYPE html>
<html lang="en">
<head profile="http://a9.com/-/spec/opensearch/1.1/">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="../assets/site.css" rel="stylesheet">
<title>math/cmplx</title>
</head>
<body>
<div class="container">
<h2 id="pkg-overview">package cmplx</h2>
<p><code>import "math/cmplx"</code>
<p>cmplx包提供了复数的常用常数和常用函数。</p>
<h3 id="pkg-index" class="section-header">Index <a class="permalink" href="#pkg-index">¶</a></h3>
<a href="../main.html"><h3>返回首页</h3></a>
</br>
<li><a href="#NaN">func NaN() complex128</a></li>
<li><a href="#IsNaN">func IsNaN(x complex128) bool</a></li>
<li><a href="#Inf">func Inf() complex128</a></li>
<li><a href="#IsInf">func IsInf(x complex128) bool</a></li>
<li><a href="#Abs">func Abs(x complex128) float64</a></li>
<li><a href="#Phase">func Phase(x complex128) float64</a></li>
<li><a href="#Polar">func Polar(x complex128) (r, θ float64)</a></li>
<li><a href="#Rect">func Rect(r, θ float64) complex128</a></li>
<li><a href="#Conj">func Conj(x complex128) complex128</a></li>
<li><a href="#Sqrt">func Sqrt(x complex128) complex128</a></li>
<li><a href="#Log">func Log(x complex128) complex128</a></li>
<li><a href="#Log10">func Log10(x complex128) complex128</a></li>
<li><a href="#Exp">func Exp(x complex128) complex128</a></li>
<li><a href="#Pow">func Pow(x, y complex128) complex128</a></li>
<li><a href="#Sin">func Sin(x complex128) complex128</a></li>
<li><a href="#Cos">func Cos(x complex128) complex128</a></li>
<li><a href="#Tan">func Tan(x complex128) complex128</a></li>
<li><a href="#Cot">func Cot(x complex128) complex128</a></li>
<li><a href="#Asin">func Asin(x complex128) complex128</a></li>
<li><a href="#Acos">func Acos(x complex128) complex128</a></li>
<li><a href="#Atan">func Atan(x complex128) complex128</a></li>
<li><a href="#Sinh">func Sinh(x complex128) complex128</a></li>
<li><a href="#Cosh">func Cosh(x complex128) complex128</a></li>
<li><a href="#Tanh">func Tanh(x complex128) complex128</a></li>
<li><a href="#Asinh">func Asinh(x complex128) complex128</a></li>
<li><a href="#Acosh">func Acosh(x complex128) complex128</a></li>
<li><a href="#Atanh">func Atanh(x complex128) complex128</a></li>
</ul>
<h3 id="NaN">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/isnan.go?name=release#22">NaN</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func NaN() <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回一个复数的“Not A Number”值。</p>
<h3 id="IsNaN">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/isnan.go?name=release#11">IsNaN</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func IsNaN(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#bool">bool</a></pre>
<p>如果x的实部或者虚部是“Not A Number”值，则返回真。</p>
<h3 id="Inf">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/isinf.go?name=release#18">Inf</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Inf() <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回一个复数的无穷大，complex(+Inf, +Inf)。</p>
<h3 id="IsInf">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/isinf.go?name=release#10">IsInf</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func IsInf(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#bool">bool</a></pre>
<p>如果x的实部或者虚部是无穷（不管正负），则返回真。</p>
<h3 id="Abs">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/abs.go?name=release#12">Abs</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Abs(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#float64">float64</a></pre>
<p>返回x的绝对值（也被称为模）。</p>
<h3 id="Phase">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/phase.go?name=release#11">Phase</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Phase(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#float64">float64</a></pre>
<p>返回x的相位（也被称为幅角），返回值范围[-Pi, Pi]。</p>
<h3 id="Polar">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/polar.go?name=release#10">Polar</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Polar(x <a href="builtin.htm#complex128">complex128</a>) (r, θ <a href="builtin.htm#float64">float64</a>)</pre>
<p>将直角坐标的复数表示为极坐标(r, θ)。其中r是x的绝对值，θ是x的相位，范围[-Pi, Pi]。</p>
<h3 id="Rect">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/rect.go?name=release#10">Rect</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Rect(r, θ <a href="builtin.htm#float64">float64</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回极坐标(r, θ)表示的复数。</p>
<h3 id="Conj">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/conj.go?name=release#8">Conj</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Conj(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回x的共轭复数（实部相等，虚部相反）。</p>
<h3 id="Sqrt">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/sqrt.go?name=release#58">Sqrt</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Sqrt(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回x的平方根。返回值的实部不小于0，而虚部的正负号和x的虚部相同。</p>
<h3 id="Log">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/log.go?name=release#57">Log</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Log(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回x的自然对数。</p>
<h3 id="Log10">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/log.go?name=release#62">Log10</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Log10(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回x的常用对数。</p>
<h3 id="Exp">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/exp.go?name=release#51">Exp</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Exp(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回e**x。</p>
<h3 id="Pow">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/pow.go?name=release#49">Pow</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Pow(x, y <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>返回x**y；有如下特例：</p>
<pre>Pow(0, ±0) returns 1+0i
Pow(0, c) 如果image(c)==0，则当real(c)<0时返回Inf+0i；否则返回Inf+Inf i
</pre>
<h3 id="Sin">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/sin.go?name=release#53">Sin</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Sin(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求正弦。</p>
<h3 id="Cos">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/sin.go?name=release#98">Cos</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Cos(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求余弦。</p>
<h3 id="Tan">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/tan.go?name=release#59">Tan</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Tan(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求正切。</p>
<h3 id="Cot">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/tan.go?name=release#175">Cot</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Cot(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求余切。</p>
<h3 id="Asin">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#51">Asin</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Asin(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反正弦。</p>
<h3 id="Acos">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#94">Acos</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Acos(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反余弦。</p>
<h3 id="Atan">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#142">Atan</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Atan(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反正切。</p>
<h3 id="Sinh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/sin.go?name=release#73">Sinh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Sinh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求双曲正弦。</p>
<h3 id="Cosh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/sin.go?name=release#117">Cosh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Cosh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求双曲余弦。</p>
<h3 id="Tanh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/tan.go?name=release#83">Tanh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Tanh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求双曲正切。</p>
<h3 id="Asinh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#67">Asinh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Asinh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反双曲正弦。</p>
<h3 id="Acosh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#100">Acosh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Acosh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反双曲余弦。</p>
<h3 id="Atanh">func <a title="View Source" href="https://github.com/golang/go/blob/master/src/math/cmplx/asin.go?name=release#166">Atanh</a> <a class="permalink" href="#pkg-index">¶</a></h3>
<pre class="funcdecl">func Atanh(x <a href="builtin.htm#complex128">complex128</a>) <a href="builtin.htm#complex128">complex128</a></pre>
<p>求反双曲正切。</p>
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