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Diffstat (limited to 'libg++/libstdc++/std/complext.h')
-rw-r--r-- | libg++/libstdc++/std/complext.h | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/libg++/libstdc++/std/complext.h b/libg++/libstdc++/std/complext.h new file mode 100644 index 0000000..db87dd0 --- /dev/null +++ b/libg++/libstdc++/std/complext.h @@ -0,0 +1,317 @@ +// The template and inlines for the -*- C++ -*- complex number classes. +// Copyright (C) 1994 Free Software Foundation + +// This file is part of the GNU ANSI 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 2, 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. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +// As a special exception, if you link this library with files compiled +// with a GNU compiler to produce an executable, this does not cause the +// resulting executable to be covered by the GNU General Public License. +// This exception does not however invalidate any other reasons why the +// executable file might be covered by the GNU General Public License. + +// Written by Jason Merrill based upon the specification in the 27 May 1994 +// C++ working paper, ANSI document X3J16/94-0098. + +#ifndef __COMPLEXT__ +#define __COMPLEXT__ + +#ifdef __GNUG__ +#pragma interface +#endif + +#include <std/cmath.h> + +#if ! defined (__GNUG__) && ! defined (__attribute__) +#define __attribute__ (foo) /* Ignore. */ +#endif + +extern "C++" { +template <class FLOAT> +class complex +{ +public: + complex (FLOAT r = 0, FLOAT i = 0): re (r), im (i) { } + complex& operator += (const complex&); + complex& operator -= (const complex&); + complex& operator *= (const complex&); + complex& operator /= (const complex&); + FLOAT real () const { return re; } + FLOAT imag () const { return im; } +private: + FLOAT re, im; + + // These functions are specified as friends for purposes of name injection; + // they do not actually reference private members. + friend FLOAT real (const complex&) __attribute__ ((const)); + friend FLOAT imag (const complex&) __attribute__ ((const)); + friend complex operator + (const complex&, const complex&) __attribute__ ((const)); + friend complex operator + (const complex&, FLOAT) __attribute__ ((const)); + friend complex operator + (FLOAT, const complex&) __attribute__ ((const)); + friend complex operator - (const complex&, const complex&) __attribute__ ((const)); + friend complex operator - (const complex&, FLOAT) __attribute__ ((const)); + friend complex operator - (FLOAT, const complex&) __attribute__ ((const)); + friend complex operator * (const complex&, const complex&) __attribute__ ((const)); + friend complex operator * (const complex&, FLOAT) __attribute__ ((const)); + friend complex operator * (FLOAT, const complex&) __attribute__ ((const)); + friend complex operator / (const complex&, const complex&) __attribute__ ((const)); + friend complex operator / (const complex&, FLOAT) __attribute__ ((const)); + friend complex operator / (FLOAT, const complex&) __attribute__ ((const)); + friend bool operator == (const complex&, const complex&) __attribute__ ((const)); + friend bool operator == (const complex&, FLOAT) __attribute__ ((const)); + friend bool operator == (FLOAT, const complex&) __attribute__ ((const)); + friend bool operator != (const complex&, const complex&) __attribute__ ((const)); + friend bool operator != (const complex&, FLOAT) __attribute__ ((const)); + friend bool operator != (FLOAT, const complex&) __attribute__ ((const)); + friend complex polar (FLOAT, FLOAT) __attribute__ ((const)); + friend complex pow (const complex&, const complex&) __attribute__ ((const)); + friend complex pow (const complex&, FLOAT) __attribute__ ((const)); + friend complex pow (const complex&, int) __attribute__ ((const)); + friend complex pow (FLOAT, const complex&) __attribute__ ((const)); + friend istream& operator>> (istream&, complex&); + friend ostream& operator<< (ostream&, const complex&); +}; + +// Declare specializations. +class complex<float>; +class complex<double>; +class complex<long double>; + +template <class FLOAT> +inline complex<FLOAT>& +complex<FLOAT>::operator += (const complex<FLOAT>& r) +{ + re += r.re; + im += r.im; + return *this; +} + +template <class FLOAT> +inline complex<FLOAT>& +complex<FLOAT>::operator -= (const complex<FLOAT>& r) +{ + re -= r.re; + im -= r.im; + return *this; +} + +template <class FLOAT> +inline complex<FLOAT>& +complex<FLOAT>::operator *= (const complex<FLOAT>& r) +{ + FLOAT f = re * r.re - im * r.im; + im = re * r.im + im * r.re; + re = f; + return *this; +} + +template <class FLOAT> inline FLOAT +imag (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return x.imag (); +} + +template <class FLOAT> inline FLOAT +real (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return x.real (); +} + +template <class FLOAT> inline complex<FLOAT> +operator + (const complex<FLOAT>& x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) + real (y), imag (x) + imag (y)); +} + +template <class FLOAT> inline complex<FLOAT> +operator + (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) + y, imag (x)); +} + +template <class FLOAT> inline complex<FLOAT> +operator + (FLOAT x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (x + real (y), imag (y)); +} + +template <class FLOAT> inline complex<FLOAT> +operator - (const complex<FLOAT>& x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) - real (y), imag (x) - imag (y)); +} + +template <class FLOAT> inline complex<FLOAT> +operator - (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) - y, imag (x)); +} + +template <class FLOAT> inline complex<FLOAT> +operator - (FLOAT x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (x - real (y), - imag (y)); +} + +template <class FLOAT> inline complex<FLOAT> +operator * (const complex<FLOAT>& x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) * real (y) - imag (x) * imag (y), + real (x) * imag (y) + imag (x) * real (y)); +} + +template <class FLOAT> inline complex<FLOAT> +operator * (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) * y, imag (x) * y); +} + +template <class FLOAT> inline complex<FLOAT> +operator * (FLOAT x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return complex<FLOAT> (x * real (y), x * imag (y)); +} + +template <class FLOAT> complex<FLOAT> +operator / (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x) / y, imag (x) / y); +} + +template <class FLOAT> inline complex<FLOAT> +operator + (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return x; +} + +template <class FLOAT> inline complex<FLOAT> +operator - (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return complex<FLOAT> (-real (x), -imag (x)); +} + +template <class FLOAT> inline bool +operator == (const complex<FLOAT>& x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return real (x) == real (y) && imag (x) == imag (y); +} + +template <class FLOAT> inline bool +operator == (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return real (x) == y && imag (x) == 0; +} + +template <class FLOAT> inline bool +operator == (FLOAT x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return x == real (y) && imag (y) == 0; +} + +template <class FLOAT> inline bool +operator != (const complex<FLOAT>& x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return real (x) != real (y) || imag (x) != imag (y); +} + +template <class FLOAT> inline bool +operator != (const complex<FLOAT>& x, FLOAT y) __attribute__ ((const)) +{ + return real (x) != y || imag (x) != 0; +} + +template <class FLOAT> inline bool +operator != (FLOAT x, const complex<FLOAT>& y) __attribute__ ((const)) +{ + return x != real (y) || imag (y) != 0; +} + +// Some targets don't provide a prototype for hypot when -ansi. +extern "C" double hypot (double, double) __attribute__ ((const)); + +template <class FLOAT> inline FLOAT +abs (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return hypot (real (x), imag (x)); +} + +template <class FLOAT> inline FLOAT +arg (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return atan2 (imag (x), real (x)); +} + +template <class FLOAT> inline complex<FLOAT> +polar (FLOAT r, FLOAT t) __attribute__ ((const)) +{ + return complex<FLOAT> (r * cos (t), r * sin (t)); +} + +template <class FLOAT> inline complex<FLOAT> +conj (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return complex<FLOAT> (real (x), -imag (x)); +} + +template <class FLOAT> inline FLOAT +norm (const complex<FLOAT>& x) __attribute__ ((const)) +{ + return real (x) * real (x) + imag (x) * imag (x); +} + +// Declarations of templates in complext.ccI + +template <class FLOAT> complex<FLOAT> + operator / (const complex<FLOAT>&, const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + operator / (FLOAT, const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + cos (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + cosh (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + exp (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + log (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + pow (const complex<FLOAT>&, const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + pow (const complex<FLOAT>&, FLOAT) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + pow (const complex<FLOAT>&, int) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + pow (FLOAT, const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + sin (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + sinh (const complex<FLOAT>&) __attribute__ ((const)); +template <class FLOAT> complex<FLOAT> + sqrt (const complex<FLOAT>&) __attribute__ ((const)); + +class istream; +class ostream; +template <class FLOAT> istream& operator >> (istream&, complex<FLOAT>&); +template <class FLOAT> ostream& operator << (ostream&, const complex<FLOAT>&); +} // extern "C++" + +// Specializations and such + +#include <std/fcomplex.h> +#include <std/dcomplex.h> +#include <std/ldcomplex.h> + +// Declare the instantiations. +#include <std/cinst.h> + +#endif |