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- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
-
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, 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 Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #ifndef _Complex_h
- #ifdef __GNUG__
- #pragma once
- #pragma interface
- #endif
- #define _Complex_h 1
-
-
- #include <stream.h>
- #include <math.h>
-
- class Complex
- {
- #ifdef __ATT_complex__
- public:
- #else
- protected:
- #endif
-
- double re;
- double im;
-
- public:
-
- double real() const;
- double imag() const;
-
- Complex();
- Complex(const Complex& y);
- Complex(double r, double i=0);
-
- ~Complex();
-
- Complex& operator = (const Complex& y);
-
- Complex& operator += (const Complex& y);
- Complex& operator += (double y);
- Complex& operator -= (const Complex& y);
- Complex& operator -= (double y);
- Complex& operator *= (const Complex& y);
- Complex& operator *= (double y);
-
- Complex& operator /= (const Complex& y);
- Complex& operator /= (double y);
-
- void error(const char* msg) const;
- };
-
-
- // error handlers
-
- extern void default_Complex_error_handler(const char*);
- extern one_arg_error_handler_t Complex_error_handler;
-
- extern one_arg_error_handler_t
- set_Complex_error_handler(one_arg_error_handler_t f);
-
-
- // non-inline functions
-
- Complex operator / (const Complex& x, const Complex& y);
- Complex operator / (const Complex& x, double y);
- Complex operator / (double x, const Complex& y);
-
- Complex cos(const Complex& x);
- Complex sin(const Complex& x);
-
- Complex cosh(const Complex& x);
- Complex sinh(const Complex& x);
-
- Complex exp(const Complex& x);
- Complex log(const Complex& x);
-
- Complex pow(const Complex& x, long p);
- Complex pow(const Complex& x, const Complex& p);
- Complex pow(const Complex& x, double y);
- Complex sqrt(const Complex& x);
-
- istream& operator >> (istream& s, Complex& x);
- ostream& operator << (ostream& s, const Complex& x);
-
- // other functions defined as inlines
-
- int operator == (const Complex& x, const Complex& y);
- int operator == (const Complex& x, double y);
- int operator != (const Complex& x, const Complex& y);
- int operator != (const Complex& x, double y);
-
- Complex operator - (const Complex& x);
- Complex conj(const Complex& x);
- Complex operator + (const Complex& x, const Complex& y);
- Complex operator + (const Complex& x, double y);
- Complex operator + (double x, const Complex& y);
- Complex operator - (const Complex& x, const Complex& y);
- Complex operator - (const Complex& x, double y);
- Complex operator - (double x, const Complex& y);
- Complex operator * (const Complex& x, const Complex& y);
- Complex operator * (const Complex& x, double y);
- Complex operator * (double x, const Complex& y);
-
- double real(const Complex& x);
- double imag(const Complex& x);
- double abs(const Complex& x);
- double norm(const Complex& x);
- double arg(const Complex& x);
-
- Complex polar(double r, double t = 0.0);
-
- #if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
-
- // inline members
-
- inline double Complex::real() const { return re; }
- inline double Complex::imag() const { return im; }
-
- inline Complex::Complex() {}
- inline Complex::Complex(const Complex& y) :re(y.real()), im(y.imag()) {}
- inline Complex::Complex(double r, double i) :re(r), im(i) {}
-
- inline Complex::~Complex() {}
-
- inline Complex& Complex::operator = (const Complex& y)
- {
- re = y.real(); im = y.imag(); return *this;
- }
-
- inline Complex& Complex::operator += (const Complex& y)
- {
- re += y.real(); im += y.imag(); return *this;
- }
-
- inline Complex& Complex::operator += (double y)
- {
- re += y; return *this;
- }
-
- inline Complex& Complex::operator -= (const Complex& y)
- {
- re -= y.real(); im -= y.imag(); return *this;
- }
-
- inline Complex& Complex::operator -= (double y)
- {
- re -= y; return *this;
- }
-
- inline Complex& Complex::operator *= (const Complex& y)
- {
- double r = re * y.real() - im * y.imag();
- im = re * y.imag() + im * y.real();
- re = r;
- return *this;
- }
-
- inline Complex& Complex::operator *= (double y)
- {
- re *= y; im *= y; return *this;
- }
-
-
- // functions
-
- inline int operator == (const Complex& x, const Complex& y)
- {
- return x.real() == y.real() && x.imag() == y.imag();
- }
-
- inline int operator == (const Complex& x, double y)
- {
- return x.imag() == 0.0 && x.real() == y;
- }
-
- inline int operator != (const Complex& x, const Complex& y)
- {
- return x.real() != y.real() || x.imag() != y.imag();
- }
-
- inline int operator != (const Complex& x, double y)
- {
- return x.imag() != 0.0 || x.real() != y;
- }
-
- inline Complex operator - (const Complex& x)
- {
- return Complex(-x.real(), -x.imag());
- }
-
- inline Complex conj(const Complex& x)
- {
- return Complex(x.real(), -x.imag());
- }
-
- inline Complex operator + (const Complex& x, const Complex& y)
- {
- return Complex(x.real() + y.real(), x.imag() + y.imag());
- }
-
- inline Complex operator + (const Complex& x, double y)
- {
- return Complex(x.real() + y, x.imag());
- }
-
- inline Complex operator + (double x, const Complex& y)
- {
- return Complex(x + y.real(), y.imag());
- }
-
- inline Complex operator - (const Complex& x, const Complex& y)
- {
- return Complex(x.real() - y.real(), x.imag() - y.imag());
- }
-
- inline Complex operator - (const Complex& x, double y)
- {
- return Complex(x.real() - y, x.imag());
- }
-
- inline Complex operator - (double x, const Complex& y)
- {
- return Complex(x - y.real(), -y.imag());
- }
-
- inline Complex operator * (const Complex& x, const Complex& y)
- {
- return Complex(x.real() * y.real() - x.imag() * y.imag(),
- x.real() * y.imag() + x.imag() * y.real());
- }
-
- inline Complex operator * (const Complex& x, double y)
- {
- return Complex(x.real() * y, x.imag() * y);
- }
-
- inline Complex operator * (double x, const Complex& y)
- {
- return Complex(x * y.real(), x * y.imag());
- }
-
- inline double real(const Complex& x)
- {
- return x.real();
- }
-
- inline double imag(const Complex& x)
- {
- return x.imag();
- }
-
- inline double abs(const Complex& x)
- {
- return hypot(x.real(), x.imag());
- }
-
- inline double norm(const Complex& x)
- {
- return (x.real() * x.real() + x.imag() * x.imag());
- }
-
- inline double arg(const Complex& x)
- {
- return atan2(x.imag(), x.real());
- }
-
- inline Complex polar(double r, double t)
- {
- return Complex(r * cos(t), r * sin(t));
- }
-
- #endif __OPTIMIZE__
- #endif
-