Filename: //usr/include/c++///10/tr1/complex

// TR1 complex -*- C++ -*- // Copyright (C) 2006-2020 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 tr1/complex * This is a TR1 C++ Library header. */ #ifndef _GLIBCXX_TR1_COMPLEX #define _GLIBCXX_TR1_COMPLEX 1 #pragma GCC system_header #include <complex> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace tr1 { /** * @addtogroup complex_numbers * @{ */ #if __cplusplus >= 201103L using std::acos; using std::asin; using std::atan; using std::acosh; using std::asinh; using std::atanh; #else template<typename _Tp> std::complex<_Tp> acos(const std::complex<_Tp>&); template<typename _Tp> std::complex<_Tp> asin(const std::complex<_Tp>&); template<typename _Tp> std::complex<_Tp> atan(const std::complex<_Tp>&); template<typename _Tp> std::complex<_Tp> acosh(const std::complex<_Tp>&); template<typename _Tp> std::complex<_Tp> asinh(const std::complex<_Tp>&); template<typename _Tp> std::complex<_Tp> atanh(const std::complex<_Tp>&); #endif // The std::fabs return type in C++11 mode is different (just _Tp). template<typename _Tp> std::complex<_Tp> fabs(const std::complex<_Tp>&); #if __cplusplus < 201103L template<typename _Tp> inline std::complex<_Tp> __complex_acos(const std::complex<_Tp>& __z) { const std::complex<_Tp> __t = std::tr1::asin(__z); const _Tp __pi_2 = 1.5707963267948966192313216916397514L; return std::complex<_Tp>(__pi_2 - __t.real(), -__t.imag()); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_acos(__complex__ float __z) { return __builtin_cacosf(__z); } inline __complex__ double __complex_acos(__complex__ double __z) { return __builtin_cacos(__z); } inline __complex__ long double __complex_acos(const __complex__ long double& __z) { return __builtin_cacosl(__z); } template<typename _Tp> inline std::complex<_Tp> acos(const std::complex<_Tp>& __z) { return __complex_acos(__z.__rep()); } #else /// acos(__z) [8.1.2]. // Effects: Behaves the same as C99 function cacos, defined // in subclause 7.3.5.1. template<typename _Tp> inline std::complex<_Tp> acos(const std::complex<_Tp>& __z) { return __complex_acos(__z); } #endif template<typename _Tp> inline std::complex<_Tp> __complex_asin(const std::complex<_Tp>& __z) { std::complex<_Tp> __t(-__z.imag(), __z.real()); __t = std::tr1::asinh(__t); return std::complex<_Tp>(__t.imag(), -__t.real()); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_asin(__complex__ float __z) { return __builtin_casinf(__z); } inline __complex__ double __complex_asin(__complex__ double __z) { return __builtin_casin(__z); } inline __complex__ long double __complex_asin(const __complex__ long double& __z) { return __builtin_casinl(__z); } template<typename _Tp> inline std::complex<_Tp> asin(const std::complex<_Tp>& __z) { return __complex_asin(__z.__rep()); } #else /// asin(__z) [8.1.3]. // Effects: Behaves the same as C99 function casin, defined // in subclause 7.3.5.2. template<typename _Tp> inline std::complex<_Tp> asin(const std::complex<_Tp>& __z) { return __complex_asin(__z); } #endif template<typename _Tp> std::complex<_Tp> __complex_atan(const std::complex<_Tp>& __z) { const _Tp __r2 = __z.real() * __z.real(); const _Tp __x = _Tp(1.0) - __r2 - __z.imag() * __z.imag(); _Tp __num = __z.imag() + _Tp(1.0); _Tp __den = __z.imag() - _Tp(1.0); __num = __r2 + __num * __num; __den = __r2 + __den * __den; return std::complex<_Tp>(_Tp(0.5) * atan2(_Tp(2.0) * __z.real(), __x), _Tp(0.25) * log(__num / __den)); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_atan(__complex__ float __z) { return __builtin_catanf(__z); } inline __complex__ double __complex_atan(__complex__ double __z) { return __builtin_catan(__z); } inline __complex__ long double __complex_atan(const __complex__ long double& __z) { return __builtin_catanl(__z); } template<typename _Tp> inline std::complex<_Tp> atan(const std::complex<_Tp>& __z) { return __complex_atan(__z.__rep()); } #else /// atan(__z) [8.1.4]. // Effects: Behaves the same as C99 function catan, defined // in subclause 7.3.5.3. template<typename _Tp> inline std::complex<_Tp> atan(const std::complex<_Tp>& __z) { return __complex_atan(__z); } #endif template<typename _Tp> std::complex<_Tp> __complex_acosh(const std::complex<_Tp>& __z) { // Kahan's formula. return _Tp(2.0) * std::log(std::sqrt(_Tp(0.5) * (__z + _Tp(1.0))) + std::sqrt(_Tp(0.5) * (__z - _Tp(1.0)))); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_acosh(__complex__ float __z) { return __builtin_cacoshf(__z); } inline __complex__ double __complex_acosh(__complex__ double __z) { return __builtin_cacosh(__z); } inline __complex__ long double __complex_acosh(const __complex__ long double& __z) { return __builtin_cacoshl(__z); } template<typename _Tp> inline std::complex<_Tp> acosh(const std::complex<_Tp>& __z) { return __complex_acosh(__z.__rep()); } #else /// acosh(__z) [8.1.5]. // Effects: Behaves the same as C99 function cacosh, defined // in subclause 7.3.6.1. template<typename _Tp> inline std::complex<_Tp> acosh(const std::complex<_Tp>& __z) { return __complex_acosh(__z); } #endif template<typename _Tp> std::complex<_Tp> __complex_asinh(const std::complex<_Tp>& __z) { std::complex<_Tp> __t((__z.real() - __z.imag()) * (__z.real() + __z.imag()) + _Tp(1.0), _Tp(2.0) * __z.real() * __z.imag()); __t = std::sqrt(__t); return std::log(__t + __z); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_asinh(__complex__ float __z) { return __builtin_casinhf(__z); } inline __complex__ double __complex_asinh(__complex__ double __z) { return __builtin_casinh(__z); } inline __complex__ long double __complex_asinh(const __complex__ long double& __z) { return __builtin_casinhl(__z); } template<typename _Tp> inline std::complex<_Tp> asinh(const std::complex<_Tp>& __z) { return __complex_asinh(__z.__rep()); } #else /// asinh(__z) [8.1.6]. // Effects: Behaves the same as C99 function casin, defined // in subclause 7.3.6.2. template<typename _Tp> inline std::complex<_Tp> asinh(const std::complex<_Tp>& __z) { return __complex_asinh(__z); } #endif template<typename _Tp> std::complex<_Tp> __complex_atanh(const std::complex<_Tp>& __z) { const _Tp __i2 = __z.imag() * __z.imag(); const _Tp __x = _Tp(1.0) - __i2 - __z.real() * __z.real(); _Tp __num = _Tp(1.0) + __z.real(); _Tp __den = _Tp(1.0) - __z.real(); __num = __i2 + __num * __num; __den = __i2 + __den * __den; return std::complex<_Tp>(_Tp(0.25) * (log(__num) - log(__den)), _Tp(0.5) * atan2(_Tp(2.0) * __z.imag(), __x)); } #if _GLIBCXX_USE_C99_COMPLEX_TR1 inline __complex__ float __complex_atanh(__complex__ float __z) { return __builtin_catanhf(__z); } inline __complex__ double __complex_atanh(__complex__ double __z) { return __builtin_catanh(__z); } inline __complex__ long double __complex_atanh(const __complex__ long double& __z) { return __builtin_catanhl(__z); } template<typename _Tp> inline std::complex<_Tp> atanh(const std::complex<_Tp>& __z) { return __complex_atanh(__z.__rep()); } #else /// atanh(__z) [8.1.7]. // Effects: Behaves the same as C99 function catanh, defined // in subclause 7.3.6.3. template<typename _Tp> inline std::complex<_Tp> atanh(const std::complex<_Tp>& __z) { return __complex_atanh(__z); } #endif #endif // C++11 template<typename _Tp> inline std::complex<_Tp> /// fabs(__z) [8.1.8]. // Effects: Behaves the same as C99 function cabs, defined // in subclause 7.3.8.1. fabs(const std::complex<_Tp>& __z) { return std::abs(__z); } /// Additional overloads [8.1.9]. #if __cplusplus < 201103L template<typename _Tp> inline typename __gnu_cxx::__promote<_Tp>::__type arg(_Tp __x) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; #if (_GLIBCXX_USE_C99_MATH && !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC) return std::signbit(__x) ? __type(3.1415926535897932384626433832795029L) : __type(); #else return std::arg(std::complex<__type>(__x)); #endif } template<typename _Tp> inline typename __gnu_cxx::__promote<_Tp>::__type imag(_Tp) { return _Tp(); } template<typename _Tp> inline typename __gnu_cxx::__promote<_Tp>::__type norm(_Tp __x) { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; return __type(__x) * __type(__x); } template<typename _Tp> inline typename __gnu_cxx::__promote<_Tp>::__type real(_Tp __x) { return __x; } #endif template<typename _Tp, typename _Up> inline std::complex<typename __gnu_cxx::__promote_2<_Tp, _Up>::__type> pow(const std::complex<_Tp>& __x, const _Up& __y) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return std::pow(std::complex<__type>(__x), __type(__y)); } template<typename _Tp, typename _Up> inline std::complex<typename __gnu_cxx::__promote_2<_Tp, _Up>::__type> pow(const _Tp& __x, const std::complex<_Up>& __y) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return std::pow(__type(__x), std::complex<__type>(__y)); } template<typename _Tp, typename _Up> inline std::complex<typename __gnu_cxx::__promote_2<_Tp, _Up>::__type> pow(const std::complex<_Tp>& __x, const std::complex<_Up>& __y) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return std::pow(std::complex<__type>(__x), std::complex<__type>(__y)); } using std::arg; template<typename _Tp> inline std::complex<_Tp> conj(const std::complex<_Tp>& __z) { return std::conj(__z); } template<typename _Tp> inline std::complex<typename __gnu_cxx::__promote<_Tp>::__type> conj(_Tp __x) { return __x; } using std::imag; using std::norm; using std::polar; template<typename _Tp, typename _Up> inline std::complex<typename __gnu_cxx::__promote_2<_Tp, _Up>::__type> polar(const _Tp& __rho, const _Up& __theta) { typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type; return std::polar(__type(__rho), __type(__theta)); } using std::real; template<typename _Tp> inline std::complex<_Tp> pow(const std::complex<_Tp>& __x, const _Tp& __y) { return std::pow(__x, __y); } template<typename _Tp> inline std::complex<_Tp> pow(const _Tp& __x, const std::complex<_Tp>& __y) { return std::pow(__x, __y); } template<typename _Tp> inline std::complex<_Tp> pow(const std::complex<_Tp>& __x, const std::complex<_Tp>& __y) { return std::pow(__x, __y); } // @} group complex_numbers } _GLIBCXX_END_NAMESPACE_VERSION } #endif // _GLIBCXX_TR1_COMPLEX

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