1 // The template and inlines for the -*- C++ -*- complex number classes.
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
32 // ISO C++ 14882: 26.2 Complex Numbers
33 // Note: this is not a conforming implementation.
34 // Initially implemented by Ulrich Drepper <drepper@cygnus.com>
35 // Improved by Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>
39 * This is a Standard C++ Library header. You should @c #include this header
40 * in your programs, rather than any of the "st[dl]_*.h" implementation files.
44 #define _CPP_COMPLEX 1
46 #pragma GCC system_header
48 #include <bits/c++config.h>
49 #include <bits/cpp_type_traits.h>
55 // Forward declarations
56 template<typename _Tp> class complex;
57 template<> class complex<float>;
58 template<> class complex<double>;
59 template<> class complex<long double>;
61 template<typename _Tp> _Tp abs(const complex<_Tp>&);
62 template<typename _Tp> _Tp arg(const complex<_Tp>&);
63 template<typename _Tp> _Tp norm(const complex<_Tp>&);
65 template<typename _Tp> complex<_Tp> conj(const complex<_Tp>&);
66 template<typename _Tp> complex<_Tp> polar(const _Tp&, const _Tp& = 0);
69 template<typename _Tp> complex<_Tp> cos(const complex<_Tp>&);
70 template<typename _Tp> complex<_Tp> cosh(const complex<_Tp>&);
71 template<typename _Tp> complex<_Tp> exp(const complex<_Tp>&);
72 template<typename _Tp> complex<_Tp> log(const complex<_Tp>&);
73 template<typename _Tp> complex<_Tp> log10(const complex<_Tp>&);
74 template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&, int);
75 template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&, const _Tp&);
76 template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&,
78 template<typename _Tp> complex<_Tp> pow(const _Tp&, const complex<_Tp>&);
79 template<typename _Tp> complex<_Tp> sin(const complex<_Tp>&);
80 template<typename _Tp> complex<_Tp> sinh(const complex<_Tp>&);
81 template<typename _Tp> complex<_Tp> sqrt(const complex<_Tp>&);
82 template<typename _Tp> complex<_Tp> tan(const complex<_Tp>&);
83 template<typename _Tp> complex<_Tp> tanh(const complex<_Tp>&);
86 // 26.2.2 Primary template class complex
87 template<typename _Tp>
91 typedef _Tp value_type;
93 complex(const _Tp& = _Tp(), const _Tp & = _Tp());
95 // Let's the compiler synthetize the copy constructor
96 // complex (const complex<_Tp>&);
97 template<typename _Up>
98 complex(const complex<_Up>&);
103 complex<_Tp>& operator=(const _Tp&);
104 complex<_Tp>& operator+=(const _Tp&);
105 complex<_Tp>& operator-=(const _Tp&);
106 complex<_Tp>& operator*=(const _Tp&);
107 complex<_Tp>& operator/=(const _Tp&);
109 // Let's the compiler synthetize the
110 // copy and assignment operator
111 // complex<_Tp>& operator= (const complex<_Tp>&);
112 template<typename _Up>
113 complex<_Tp>& operator=(const complex<_Up>&);
114 template<typename _Up>
115 complex<_Tp>& operator+=(const complex<_Up>&);
116 template<typename _Up>
117 complex<_Tp>& operator-=(const complex<_Up>&);
118 template<typename _Up>
119 complex<_Tp>& operator*=(const complex<_Up>&);
120 template<typename _Up>
121 complex<_Tp>& operator/=(const complex<_Up>&);
124 _Tp _M_real, _M_imag;
127 template<typename _Tp>
129 complex<_Tp>::real() const { return _M_real; }
131 template<typename _Tp>
133 complex<_Tp>::imag() const { return _M_imag; }
135 template<typename _Tp>
137 complex<_Tp>::complex(const _Tp& __r, const _Tp& __i)
138 : _M_real(__r), _M_imag(__i) { }
140 template<typename _Tp>
141 template<typename _Up>
143 complex<_Tp>::complex(const complex<_Up>& __z)
144 : _M_real(__z.real()), _M_imag(__z.imag()) { }
146 template<typename _Tp>
148 complex<_Tp>::operator=(const _Tp& __t)
156 template<typename _Tp>
158 complex<_Tp>::operator+=(const _Tp& __t)
165 template<typename _Tp>
167 complex<_Tp>::operator-=(const _Tp& __t)
174 template<typename _Tp>
176 complex<_Tp>::operator*=(const _Tp& __t)
184 template<typename _Tp>
186 complex<_Tp>::operator/=(const _Tp& __t)
193 template<typename _Tp>
194 template<typename _Up>
196 complex<_Tp>::operator=(const complex<_Up>& __z)
198 _M_real = __z.real();
199 _M_imag = __z.imag();
204 template<typename _Tp>
205 template<typename _Up>
207 complex<_Tp>::operator+=(const complex<_Up>& __z)
209 _M_real += __z.real();
210 _M_imag += __z.imag();
215 template<typename _Tp>
216 template<typename _Up>
218 complex<_Tp>::operator-=(const complex<_Up>& __z)
220 _M_real -= __z.real();
221 _M_imag -= __z.imag();
226 // XXX: This is a grammar school implementation.
227 template<typename _Tp>
228 template<typename _Up>
230 complex<_Tp>::operator*=(const complex<_Up>& __z)
232 const _Tp __r = _M_real * __z.real() - _M_imag * __z.imag();
233 _M_imag = _M_real * __z.imag() + _M_imag * __z.real();
239 // XXX: This is a grammar school implementation.
240 template<typename _Tp>
241 template<typename _Up>
243 complex<_Tp>::operator/=(const complex<_Up>& __z)
245 const _Tp __r = _M_real * __z.real() + _M_imag * __z.imag();
246 const _Tp __n = norm(__z);
247 _M_imag = (_M_imag * __z.real() - _M_real * __z.imag()) / __n;
253 template<typename _Tp>
255 operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
256 { return complex<_Tp> (__x) += __y; }
258 template<typename _Tp>
260 operator+(const complex<_Tp>& __x, const _Tp& __y)
261 { return complex<_Tp> (__x) += __y; }
263 template<typename _Tp>
265 operator+(const _Tp& __x, const complex<_Tp>& __y)
266 { return complex<_Tp> (__y) += __x; }
268 template<typename _Tp>
270 operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
271 { return complex<_Tp> (__x) -= __y; }
273 template<typename _Tp>
275 operator-(const complex<_Tp>& __x, const _Tp& __y)
276 { return complex<_Tp> (__x) -= __y; }
278 template<typename _Tp>
280 operator-(const _Tp& __x, const complex<_Tp>& __y)
281 { return complex<_Tp> (__x) -= __y; }
283 template<typename _Tp>
285 operator*(const complex<_Tp>& __x, const complex<_Tp>& __y)
286 { return complex<_Tp> (__x) *= __y; }
288 template<typename _Tp>
290 operator*(const complex<_Tp>& __x, const _Tp& __y)
291 { return complex<_Tp> (__x) *= __y; }
293 template<typename _Tp>
295 operator*(const _Tp& __x, const complex<_Tp>& __y)
296 { return complex<_Tp> (__y) *= __x; }
298 template<typename _Tp>
300 operator/(const complex<_Tp>& __x, const complex<_Tp>& __y)
301 { return complex<_Tp> (__x) /= __y; }
303 template<typename _Tp>
305 operator/(const complex<_Tp>& __x, const _Tp& __y)
306 { return complex<_Tp> (__x) /= __y; }
308 template<typename _Tp>
310 operator/(const _Tp& __x, const complex<_Tp>& __y)
311 { return complex<_Tp> (__x) /= __y; }
313 template<typename _Tp>
315 operator+(const complex<_Tp>& __x)
318 template<typename _Tp>
320 operator-(const complex<_Tp>& __x)
321 { return complex<_Tp>(-__x.real(), -__x.imag()); }
323 template<typename _Tp>
325 operator==(const complex<_Tp>& __x, const complex<_Tp>& __y)
326 { return __x.real() == __y.real() && __x.imag() == __y.imag(); }
328 template<typename _Tp>
330 operator==(const complex<_Tp>& __x, const _Tp& __y)
331 { return __x.real() == __y && __x.imag() == _Tp(); }
333 template<typename _Tp>
335 operator==(const _Tp& __x, const complex<_Tp>& __y)
336 { return __x == __y.real() && _Tp() == __y.imag(); }
338 template<typename _Tp>
340 operator!=(const complex<_Tp>& __x, const complex<_Tp>& __y)
341 { return __x.real() != __y.real() || __x.imag() != __y.imag(); }
343 template<typename _Tp>
345 operator!=(const complex<_Tp>& __x, const _Tp& __y)
346 { return __x.real() != __y || __x.imag() != _Tp(); }
348 template<typename _Tp>
350 operator!=(const _Tp& __x, const complex<_Tp>& __y)
351 { return __x != __y.real() || _Tp() != __y.imag(); }
353 template<typename _Tp, typename _CharT, class _Traits>
354 basic_istream<_CharT, _Traits>&
355 operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
362 __is >> __re_x >> __ch;
365 __is >> __im_x >> __ch;
367 __x = complex<_Tp>(__re_x, __im_x);
369 __is.setstate(ios_base::failbit);
371 else if (__ch == ')')
372 __x = complex<_Tp>(__re_x, _Tp(0));
374 __is.setstate(ios_base::failbit);
380 __x = complex<_Tp>(__re_x, _Tp(0));
385 template<typename _Tp, typename _CharT, class _Traits>
386 basic_ostream<_CharT, _Traits>&
387 operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __x)
389 basic_ostringstream<_CharT, _Traits> __s;
390 __s.flags(__os.flags());
391 __s.imbue(__os.getloc());
392 __s.precision(__os.precision());
393 __s << '(' << __x.real() << ',' << __x.imag() << ')';
394 return __os << __s.str();
398 template<typename _Tp>
400 real(const complex<_Tp>& __z)
401 { return __z.real(); }
403 template<typename _Tp>
405 imag(const complex<_Tp>& __z)
406 { return __z.imag(); }
408 template<typename _Tp>
410 abs(const complex<_Tp>& __z)
412 _Tp __x = __z.real();
413 _Tp __y = __z.imag();
414 const _Tp __s = std::max(abs(__x), abs(__y));
415 if (__s == _Tp()) // well ...
419 return __s * sqrt(__x * __x + __y * __y);
422 template<typename _Tp>
424 arg(const complex<_Tp>& __z)
425 { return atan2(__z.imag(), __z.real()); }
427 // 26.2.7/5: norm(__z) returns the squared magintude of __z.
428 // As defined, norm() is -not- a norm is the common mathematical
429 // sens used in numerics. The helper class _Norm_helper<> tries to
430 // distinguish between builtin floating point and the rest, so as
431 // to deliver an answer as close as possible to the real value.
435 template<typename _Tp>
436 static inline _Tp _S_do_it(const complex<_Tp>& __z)
438 const _Tp __x = __z.real();
439 const _Tp __y = __z.imag();
440 return __x * __x + __y * __y;
445 struct _Norm_helper<true>
447 template<typename _Tp>
448 static inline _Tp _S_do_it(const complex<_Tp>& __z)
450 _Tp __res = abs(__z);
451 return __res * __res;
455 template<typename _Tp>
457 norm(const complex<_Tp>& __z)
459 return _Norm_helper<__is_floating<_Tp>::_M_type && !_GLIBCPP_FAST_MATH>::_S_do_it(__z);
462 template<typename _Tp>
464 polar(const _Tp& __rho, const _Tp& __theta)
465 { return complex<_Tp>(__rho * cos(__theta), __rho * sin(__theta)); }
467 template<typename _Tp>
469 conj(const complex<_Tp>& __z)
470 { return complex<_Tp>(__z.real(), -__z.imag()); }
473 template<typename _Tp>
475 cos(const complex<_Tp>& __z)
477 const _Tp __x = __z.real();
478 const _Tp __y = __z.imag();
479 return complex<_Tp>(cos(__x) * cosh(__y), -sin(__x) * sinh(__y));
482 template<typename _Tp>
484 cosh(const complex<_Tp>& __z)
486 const _Tp __x = __z.real();
487 const _Tp __y = __z.imag();
488 return complex<_Tp>(cosh(__x) * cos(__y), sinh(__x) * sin(__y));
491 template<typename _Tp>
493 exp(const complex<_Tp>& __z)
494 { return polar(exp(__z.real()), __z.imag()); }
496 template<typename _Tp>
498 log(const complex<_Tp>& __z)
499 { return complex<_Tp>(log(abs(__z)), arg(__z)); }
501 template<typename _Tp>
503 log10(const complex<_Tp>& __z)
504 { return log(__z) / log(_Tp(10.0)); }
506 template<typename _Tp>
508 sin(const complex<_Tp>& __z)
510 const _Tp __x = __z.real();
511 const _Tp __y = __z.imag();
512 return complex<_Tp>(sin(__x) * cosh(__y), cos(__x) * sinh(__y));
515 template<typename _Tp>
517 sinh(const complex<_Tp>& __z)
519 const _Tp __x = __z.real();
520 const _Tp __y = __z.imag();
521 return complex<_Tp>(sinh(__x) * cos(__y), cosh(__x) * sin(__y));
524 template<typename _Tp>
526 sqrt(const complex<_Tp>& __z)
528 _Tp __x = __z.real();
529 _Tp __y = __z.imag();
533 _Tp __t = sqrt(abs(__y) / 2);
534 return complex<_Tp>(__t, __y < _Tp() ? -__t : __t);
538 _Tp __t = sqrt(2 * (abs(__z) + abs(__x)));
541 ? complex<_Tp>(__u, __y / __t)
542 : complex<_Tp>(abs(__y) / __t, __y < _Tp() ? -__u : __u);
546 template<typename _Tp>
548 tan(const complex<_Tp>& __z)
550 return sin(__z) / cos(__z);
553 template<typename _Tp>
555 tanh(const complex<_Tp>& __z)
557 return sinh(__z) / cosh(__z);
560 template<typename _Tp>
562 pow(const complex<_Tp>& __z, int __n)
564 return __pow_helper(__z, __n);
567 template<typename _Tp>
569 pow(const complex<_Tp>& __x, const _Tp& __y)
571 if (__x.imag() == _Tp())
572 return pow(__x.real(), __y);
574 complex<_Tp> __t = log(__x);
575 return polar(exp(__y * __t.real()), __y * __t.imag());
578 template<typename _Tp>
580 pow(const complex<_Tp>& __x, const complex<_Tp>& __y)
582 return __x == _Tp() ? _Tp() : exp(__y * log(__x));
585 template<typename _Tp>
587 pow(const _Tp& __x, const complex<_Tp>& __y)
591 : polar(pow(__x, __y.real()), __y.imag() * log(__x));
594 // 26.2.3 complex specializations
595 // complex<float> specialization
596 template<> class complex<float>
599 typedef float value_type;
601 complex(float = 0.0f, float = 0.0f);
602 #ifdef _GLIBCPP_BUGGY_COMPLEX
603 complex(const complex& __z) : _M_value(__z._M_value) { }
605 explicit complex(const complex<double>&);
606 explicit complex(const complex<long double>&);
611 complex<float>& operator=(float);
612 complex<float>& operator+=(float);
613 complex<float>& operator-=(float);
614 complex<float>& operator*=(float);
615 complex<float>& operator/=(float);
617 // Let's the compiler synthetize the copy and assignment
618 // operator. It always does a pretty good job.
619 // complex& operator= (const complex&);
620 template<typename _Tp>
621 complex<float>&operator=(const complex<_Tp>&);
622 template<typename _Tp>
623 complex<float>& operator+=(const complex<_Tp>&);
625 complex<float>& operator-=(const complex<_Tp>&);
627 complex<float>& operator*=(const complex<_Tp>&);
629 complex<float>&operator/=(const complex<_Tp>&);
632 typedef __complex__ float _ComplexT;
635 complex(_ComplexT __z) : _M_value(__z) { }
637 friend class complex<double>;
638 friend class complex<long double>;
642 complex<float>::real() const
643 { return __real__ _M_value; }
646 complex<float>::imag() const
647 { return __imag__ _M_value; }
650 complex<float>::complex(float r, float i)
652 __real__ _M_value = r;
653 __imag__ _M_value = i;
656 inline complex<float>&
657 complex<float>::operator=(float __f)
659 __real__ _M_value = __f;
660 __imag__ _M_value = 0.0f;
664 inline complex<float>&
665 complex<float>::operator+=(float __f)
667 __real__ _M_value += __f;
671 inline complex<float>&
672 complex<float>::operator-=(float __f)
674 __real__ _M_value -= __f;
678 inline complex<float>&
679 complex<float>::operator*=(float __f)
685 inline complex<float>&
686 complex<float>::operator/=(float __f)
692 template<typename _Tp>
693 inline complex<float>&
694 complex<float>::operator=(const complex<_Tp>& __z)
696 __real__ _M_value = __z.real();
697 __imag__ _M_value = __z.imag();
701 template<typename _Tp>
702 inline complex<float>&
703 complex<float>::operator+=(const complex<_Tp>& __z)
705 __real__ _M_value += __z.real();
706 __imag__ _M_value += __z.imag();
710 template<typename _Tp>
711 inline complex<float>&
712 complex<float>::operator-=(const complex<_Tp>& __z)
714 __real__ _M_value -= __z.real();
715 __imag__ _M_value -= __z.imag();
719 template<typename _Tp>
720 inline complex<float>&
721 complex<float>::operator*=(const complex<_Tp>& __z)
724 __real__ __t = __z.real();
725 __imag__ __t = __z.imag();
730 template<typename _Tp>
731 inline complex<float>&
732 complex<float>::operator/=(const complex<_Tp>& __z)
735 __real__ __t = __z.real();
736 __imag__ __t = __z.imag();
741 // 26.2.3 complex specializations
742 // complex<double> specialization
743 template<> class complex<double>
746 typedef double value_type;
748 complex(double =0.0, double =0.0);
749 #ifdef _GLIBCPP_BUGGY_COMPLEX
750 complex(const complex& __z) : _M_value(__z._M_value) { }
752 complex(const complex<float>&);
753 explicit complex(const complex<long double>&);
758 complex<double>& operator=(double);
759 complex<double>& operator+=(double);
760 complex<double>& operator-=(double);
761 complex<double>& operator*=(double);
762 complex<double>& operator/=(double);
764 // The compiler will synthetize this, efficiently.
765 // complex& operator= (const complex&);
766 template<typename _Tp>
767 complex<double>& operator=(const complex<_Tp>&);
768 template<typename _Tp>
769 complex<double>& operator+=(const complex<_Tp>&);
770 template<typename _Tp>
771 complex<double>& operator-=(const complex<_Tp>&);
772 template<typename _Tp>
773 complex<double>& operator*=(const complex<_Tp>&);
774 template<typename _Tp>
775 complex<double>& operator/=(const complex<_Tp>&);
778 typedef __complex__ double _ComplexT;
781 complex(_ComplexT __z) : _M_value(__z) { }
783 friend class complex<float>;
784 friend class complex<long double>;
788 complex<double>::real() const
789 { return __real__ _M_value; }
792 complex<double>::imag() const
793 { return __imag__ _M_value; }
796 complex<double>::complex(double __r, double __i)
798 __real__ _M_value = __r;
799 __imag__ _M_value = __i;
802 inline complex<double>&
803 complex<double>::operator=(double __d)
805 __real__ _M_value = __d;
806 __imag__ _M_value = 0.0;
810 inline complex<double>&
811 complex<double>::operator+=(double __d)
813 __real__ _M_value += __d;
817 inline complex<double>&
818 complex<double>::operator-=(double __d)
820 __real__ _M_value -= __d;
824 inline complex<double>&
825 complex<double>::operator*=(double __d)
831 inline complex<double>&
832 complex<double>::operator/=(double __d)
838 template<typename _Tp>
839 inline complex<double>&
840 complex<double>::operator=(const complex<_Tp>& __z)
842 __real__ _M_value = __z.real();
843 __imag__ _M_value = __z.imag();
847 template<typename _Tp>
848 inline complex<double>&
849 complex<double>::operator+=(const complex<_Tp>& __z)
851 __real__ _M_value += __z.real();
852 __imag__ _M_value += __z.imag();
856 template<typename _Tp>
857 inline complex<double>&
858 complex<double>::operator-=(const complex<_Tp>& __z)
860 __real__ _M_value -= __z.real();
861 __imag__ _M_value -= __z.imag();
865 template<typename _Tp>
866 inline complex<double>&
867 complex<double>::operator*=(const complex<_Tp>& __z)
870 __real__ __t = __z.real();
871 __imag__ __t = __z.imag();
876 template<typename _Tp>
877 inline complex<double>&
878 complex<double>::operator/=(const complex<_Tp>& __z)
881 __real__ __t = __z.real();
882 __imag__ __t = __z.imag();
887 // 26.2.3 complex specializations
888 // complex<long double> specialization
889 template<> class complex<long double>
892 typedef long double value_type;
894 complex(long double = 0.0L, long double = 0.0L);
895 #ifdef _GLIBCPP_BUGGY_COMPLEX
896 complex(const complex& __z) : _M_value(__z._M_value) { }
898 complex(const complex<float>&);
899 complex(const complex<double>&);
901 long double real() const;
902 long double imag() const;
904 complex<long double>& operator= (long double);
905 complex<long double>& operator+= (long double);
906 complex<long double>& operator-= (long double);
907 complex<long double>& operator*= (long double);
908 complex<long double>& operator/= (long double);
910 // The compiler knows how to do this efficiently
911 // complex& operator= (const complex&);
912 template<typename _Tp>
913 complex<long double>& operator=(const complex<_Tp>&);
914 template<typename _Tp>
915 complex<long double>& operator+=(const complex<_Tp>&);
916 template<typename _Tp>
917 complex<long double>& operator-=(const complex<_Tp>&);
918 template<typename _Tp>
919 complex<long double>& operator*=(const complex<_Tp>&);
920 template<typename _Tp>
921 complex<long double>& operator/=(const complex<_Tp>&);
924 typedef __complex__ long double _ComplexT;
927 complex(_ComplexT __z) : _M_value(__z) { }
929 friend class complex<float>;
930 friend class complex<double>;
934 complex<long double>::complex(long double __r, long double __i)
936 __real__ _M_value = __r;
937 __imag__ _M_value = __i;
941 complex<long double>::real() const
942 { return __real__ _M_value; }
945 complex<long double>::imag() const
946 { return __imag__ _M_value; }
948 inline complex<long double>&
949 complex<long double>::operator=(long double __r)
951 __real__ _M_value = __r;
952 __imag__ _M_value = 0.0L;
956 inline complex<long double>&
957 complex<long double>::operator+=(long double __r)
959 __real__ _M_value += __r;
963 inline complex<long double>&
964 complex<long double>::operator-=(long double __r)
966 __real__ _M_value -= __r;
970 inline complex<long double>&
971 complex<long double>::operator*=(long double __r)
977 inline complex<long double>&
978 complex<long double>::operator/=(long double __r)
984 template<typename _Tp>
985 inline complex<long double>&
986 complex<long double>::operator=(const complex<_Tp>& __z)
988 __real__ _M_value = __z.real();
989 __imag__ _M_value = __z.imag();
993 template<typename _Tp>
994 inline complex<long double>&
995 complex<long double>::operator+=(const complex<_Tp>& __z)
997 __real__ _M_value += __z.real();
998 __imag__ _M_value += __z.imag();
1002 template<typename _Tp>
1003 inline complex<long double>&
1004 complex<long double>::operator-=(const complex<_Tp>& __z)
1006 __real__ _M_value -= __z.real();
1007 __imag__ _M_value -= __z.imag();
1011 template<typename _Tp>
1012 inline complex<long double>&
1013 complex<long double>::operator*=(const complex<_Tp>& __z)
1016 __real__ __t = __z.real();
1017 __imag__ __t = __z.imag();
1022 template<typename _Tp>
1023 inline complex<long double>&
1024 complex<long double>::operator/=(const complex<_Tp>& __z)
1027 __real__ __t = __z.real();
1028 __imag__ __t = __z.imag();
1033 // These bits have to be at the end of this file, so that the
1034 // specializations have all been defined.
1035 // ??? No, they have to be there because of compiler limitation at
1036 // inlining. It suffices that class specializations be defined.
1038 complex<float>::complex(const complex<double>& __z)
1039 : _M_value(_ComplexT(__z._M_value)) { }
1042 complex<float>::complex(const complex<long double>& __z)
1043 : _M_value(_ComplexT(__z._M_value)) { }
1046 complex<double>::complex(const complex<float>& __z)
1047 : _M_value(_ComplexT(__z._M_value)) { }
1050 complex<double>::complex(const complex<long double>& __z)
1052 __real__ _M_value = __z.real();
1053 __imag__ _M_value = __z.imag();
1057 complex<long double>::complex(const complex<float>& __z)
1058 : _M_value(_ComplexT(__z._M_value)) { }
1061 complex<long double>::complex(const complex<double>& __z)
1062 : _M_value(_ComplexT(__z._M_value)) { }
1065 #endif /* _CPP_COMPLEX */