#include ＜ccomplex＞

原创于 2024-12-06 16:20:43 发布 · 328 阅读

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C++ 标准库中的 <complex> 头文件提供了对复数的支持。复数是实数和虚数的组合，通常表示为 a + bi，其中 a 是实部，b 是虚部，i 是虚数单位，满足 i^2 = -1。

在 C++ 中，复数类型由 std::complex<T> 表示，其中 T 可以是任意的算术类型，如 float、double 或 long double。

// <ccomplex> -*- C++ -*-

// Copyright (C) 2007-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file include/ccomplex
 *  This is a Standard C++ Library header.
 */

#pragma GCC system_header

#ifndef _GLIBCXX_CCOMPLEX
#define _GLIBCXX_CCOMPLEX 1

#if __cplusplus < 201103L
# include <bits/c++0x_warning.h>
#endif

extern "C++" {
#include <complex>
}

#endif

创建复数

std::complex<double> c(5.0, 3.0); // 创建一个复数 5 + 3i

访问实部和虚部

double realPart = c.real(); // 获取实部
double imagPart = c.imag(); // 获取虚部

复数的基本运算

C++ 标准库 <complex> 支持以下基本运算：

加法：operator+
减法：operator-
乘法：operator*
除法：operator/
共轭：conj
模：abs
辐角：arg