#pragma once #include #define INFINITY (__builtin_inff()) #define NAN (__builtin_nanf ("")) namespace std { // Taken from libc++ template class complex { public: typedef _Tp value_type; private: value_type __re_; value_type __im_; public: complex(const value_type &__re = value_type(), const value_type &__im = value_type()) : __re_(__re), __im_(__im) {} template complex(const complex<_Xp> &__c) : __re_(__c.real()), __im_(__c.imag()) {} value_type real() const { return __re_; } value_type imag() const { return __im_; } void real(value_type __re) { __re_ = __re; } void imag(value_type __im) { __im_ = __im; } complex &operator=(const value_type &__re) { __re_ = __re; __im_ = value_type(); return *this; } complex &operator+=(const value_type &__re) { __re_ += __re; return *this; } complex &operator-=(const value_type &__re) { __re_ -= __re; return *this; } complex &operator*=(const value_type &__re) { __re_ *= __re; __im_ *= __re; return *this; } complex &operator/=(const value_type &__re) { __re_ /= __re; __im_ /= __re; return *this; } template complex &operator=(const complex<_Xp> &__c) { __re_ = __c.real(); __im_ = __c.imag(); return *this; } template complex &operator+=(const complex<_Xp> &__c) { __re_ += __c.real(); __im_ += __c.imag(); return *this; } template complex &operator-=(const complex<_Xp> &__c) { __re_ -= __c.real(); __im_ -= __c.imag(); return *this; } template complex &operator*=(const complex<_Xp> &__c) { *this = *this * complex(__c.real(), __c.imag()); return *this; } template complex &operator/=(const complex<_Xp> &__c) { *this = *this / complex(__c.real(), __c.imag()); return *this; } }; template inline complex<_Tp> operator+(const complex<_Tp> &__x, const complex<_Tp> &__y) { complex<_Tp> __t(__x); __t += __y; return __t; } template inline complex<_Tp> operator+(const complex<_Tp> &__x, const _Tp &__y) { complex<_Tp> __t(__x); __t += __y; return __t; } template inline complex<_Tp> operator+(const _Tp &__x, const complex<_Tp> &__y) { complex<_Tp> __t(__y); __t += __x; return __t; } template inline complex<_Tp> operator-(const complex<_Tp> &__x, const complex<_Tp> &__y) { complex<_Tp> __t(__x); __t -= __y; return __t; } template inline complex<_Tp> operator-(const complex<_Tp> &__x, const _Tp &__y) { complex<_Tp> __t(__x); __t -= __y; return __t; } template inline complex<_Tp> operator-(const _Tp &__x, const complex<_Tp> &__y) { complex<_Tp> __t(-__y); __t += __x; return __t; } template complex<_Tp> operator*(const complex<_Tp> &__z, const complex<_Tp> &__w) { _Tp __a = __z.real(); _Tp __b = __z.imag(); _Tp __c = __w.real(); _Tp __d = __w.imag(); _Tp __ac = __a * __c; _Tp __bd = __b * __d; _Tp __ad = __a * __d; _Tp __bc = __b * __c; _Tp __x = __ac - __bd; _Tp __y = __ad + __bc; if (std::isnan(__x) && std::isnan(__y)) { bool __recalc = false; if (std::isinf(__a) || std::isinf(__b)) { __a = copysign(std::isinf(__a) ? _Tp(1) : _Tp(0), __a); __b = copysign(std::isinf(__b) ? _Tp(1) : _Tp(0), __b); if (std::isnan(__c)) __c = copysign(_Tp(0), __c); if (std::isnan(__d)) __d = copysign(_Tp(0), __d); __recalc = true; } if (std::isinf(__c) || std::isinf(__d)) { __c = copysign(std::isinf(__c) ? _Tp(1) : _Tp(0), __c); __d = copysign(std::isinf(__d) ? _Tp(1) : _Tp(0), __d); if (std::isnan(__a)) __a = copysign(_Tp(0), __a); if (std::isnan(__b)) __b = copysign(_Tp(0), __b); __recalc = true; } if (!__recalc && (std::isinf(__ac) || std::isinf(__bd) || std::isinf(__ad) || std::isinf(__bc))) { if (std::isnan(__a)) __a = copysign(_Tp(0), __a); if (std::isnan(__b)) __b = copysign(_Tp(0), __b); if (std::isnan(__c)) __c = copysign(_Tp(0), __c); if (std::isnan(__d)) __d = copysign(_Tp(0), __d); __recalc = true; } if (__recalc) { __x = _Tp(INFINITY) * (__a * __c - __b * __d); __y = _Tp(INFINITY) * (__a * __d + __b * __c); } } return complex<_Tp>(__x, __y); } template inline complex<_Tp> operator*(const complex<_Tp> &__x, const _Tp &__y) { complex<_Tp> __t(__x); __t *= __y; return __t; } template inline complex<_Tp> operator*(const _Tp &__x, const complex<_Tp> &__y) { complex<_Tp> __t(__y); __t *= __x; return __t; } template complex<_Tp> operator/(const complex<_Tp> &__z, const complex<_Tp> &__w) { int __ilogbw = 0; _Tp __a = __z.real(); _Tp __b = __z.imag(); _Tp __c = __w.real(); _Tp __d = __w.imag(); _Tp __logbw = logb(fmax(fabs(__c), fabs(__d))); if (std::isfinite(__logbw)) { __ilogbw = static_cast(__logbw); __c = scalbn(__c, -__ilogbw); __d = scalbn(__d, -__ilogbw); } _Tp __denom = __c * __c + __d * __d; _Tp __x = scalbn((__a * __c + __b * __d) / __denom, -__ilogbw); _Tp __y = scalbn((__b * __c - __a * __d) / __denom, -__ilogbw); if (std::isnan(__x) && std::isnan(__y)) { if ((__denom == _Tp(0)) && (!std::isnan(__a) || !std::isnan(__b))) { __x = copysign(_Tp(INFINITY), __c) * __a; __y = copysign(_Tp(INFINITY), __c) * __b; } else if ((std::isinf(__a) || std::isinf(__b)) && std::isfinite(__c) && std::isfinite(__d)) { __a = copysign(std::isinf(__a) ? _Tp(1) : _Tp(0), __a); __b = copysign(std::isinf(__b) ? _Tp(1) : _Tp(0), __b); __x = _Tp(INFINITY) * (__a * __c + __b * __d); __y = _Tp(INFINITY) * (__b * __c - __a * __d); } else if (std::isinf(__logbw) && __logbw > _Tp(0) && std::isfinite(__a) && std::isfinite(__b)) { __c = copysign(std::isinf(__c) ? _Tp(1) : _Tp(0), __c); __d = copysign(std::isinf(__d) ? _Tp(1) : _Tp(0), __d); __x = _Tp(0) * (__a * __c + __b * __d); __y = _Tp(0) * (__b * __c - __a * __d); } } return complex<_Tp>(__x, __y); } template inline complex<_Tp> operator/(const complex<_Tp> &__x, const _Tp &__y) { return complex<_Tp>(__x.real() / __y, __x.imag() / __y); } template inline complex<_Tp> operator/(const _Tp &__x, const complex<_Tp> &__y) { complex<_Tp> __t(__x); __t /= __y; return __t; } template inline complex<_Tp> operator+(const complex<_Tp> &__x) { return __x; } template inline complex<_Tp> operator-(const complex<_Tp> &__x) { return complex<_Tp>(-__x.real(), -__x.imag()); } template inline bool operator==(const complex<_Tp> &__x, const complex<_Tp> &__y) { return __x.real() == __y.real() && __x.imag() == __y.imag(); } template inline bool operator==(const complex<_Tp> &__x, const _Tp &__y) { return __x.real() == __y && __x.imag() == 0; } template inline bool operator==(const _Tp &__x, const complex<_Tp> &__y) { return __x == __y.real() && 0 == __y.imag(); } template inline bool operator!=(const complex<_Tp> &__x, const complex<_Tp> &__y) { return !(__x == __y); } template inline bool operator!=(const complex<_Tp> &__x, const _Tp &__y) { return !(__x == __y); } template inline bool operator!=(const _Tp &__x, const complex<_Tp> &__y) { return !(__x == __y); } template _Tp abs(const std::complex<_Tp> &__c); // arg template _Tp arg(const std::complex<_Tp> &__c); // norm template _Tp norm(const std::complex<_Tp> &__c); // conj template std::complex<_Tp> conj(const std::complex<_Tp> &__c); // proj template std::complex<_Tp> proj(const std::complex<_Tp> &__c); // polar template complex<_Tp> polar(const _Tp &__rho, const _Tp &__theta = _Tp()); // log template std::complex<_Tp> log(const std::complex<_Tp> &__x); // log10 template std::complex<_Tp> log10(const std::complex<_Tp> &__x); // sqrt template std::complex<_Tp> sqrt(const std::complex<_Tp> &__x); // exp template std::complex<_Tp> exp(const std::complex<_Tp> &__x); // pow template std::complex<_Tp> pow(const std::complex<_Tp> &__x, const std::complex<_Tp> &__y); // __sqr, computes pow(x, 2) template std::complex<_Tp> __sqr(const std::complex<_Tp> &__x); // asinh template std::complex<_Tp> asinh(const std::complex<_Tp> &__x); // acosh template std::complex<_Tp> acosh(const std::complex<_Tp> &__x); // atanh template std::complex<_Tp> atanh(const std::complex<_Tp> &__x); // sinh template std::complex<_Tp> sinh(const std::complex<_Tp> &__x); // cosh template std::complex<_Tp> cosh(const std::complex<_Tp> &__x); // tanh template std::complex<_Tp> tanh(const std::complex<_Tp> &__x); // asin template std::complex<_Tp> asin(const std::complex<_Tp> &__x); // acos template std::complex<_Tp> acos(const std::complex<_Tp> &__x); // atan template std::complex<_Tp> atan(const std::complex<_Tp> &__x); // sin template std::complex<_Tp> sin(const std::complex<_Tp> &__x); // cos template std::complex<_Tp> cos(const std::complex<_Tp> &__x); // tan template std::complex<_Tp> tan(const std::complex<_Tp> &__x); } // namespace std