99 lines
3.8 KiB
C++
99 lines
3.8 KiB
C++
#ifndef COMPLEX_OPS_H
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#define COMPLEX_OPS_H
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/*
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* Functions to handle arithmetic operations on NumPy complex values
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*/
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#include <numpy/arrayobject.h>
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#include <iostream>
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template <class c_type, class npy_type>
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class complex_wrapper : public npy_type {
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template<class x, class y>
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friend std::ostream& operator<<(std::ostream&, const complex_wrapper<x,y>& );
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public:
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complex_wrapper( const c_type r = c_type(0), const c_type i = c_type(0) ){
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npy_type::real = r;
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npy_type::imag = i;
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}
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complex_wrapper operator-() const {
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return complex_wrapper(-npy_type::real,-npy_type::imag);
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}
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complex_wrapper operator+(const complex_wrapper& B) const {
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return complex_wrapper(npy_type::real + B.real, npy_type::imag + B.imag);
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}
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complex_wrapper operator-(const complex_wrapper& B) const {
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return complex_wrapper(npy_type::real - B.real, npy_type::imag - B.imag);
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}
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complex_wrapper operator*(const complex_wrapper& B) const {
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return complex_wrapper(npy_type::real * B.real - npy_type::imag * B.imag,
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npy_type::real * B.imag + npy_type::imag * B.real);
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}
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complex_wrapper operator/(const complex_wrapper& B) const {
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complex_wrapper result;
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c_type denom = 1.0 / (B.real * B.real + B.imag * B.imag);
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result.real = (npy_type::real * B.real + npy_type::imag * B.imag) * denom;
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result.imag = (npy_type::imag * B.real - npy_type::real * B.imag) * denom;
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return result;
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}
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complex_wrapper& operator+=(const complex_wrapper & B){
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npy_type::real += B.real;
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npy_type::imag += B.imag;
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return (*this);
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}
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complex_wrapper& operator-=(const complex_wrapper & B){
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npy_type::real -= B.real;
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npy_type::imag -= B.imag;
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return (*this);
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}
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complex_wrapper& operator*=(const complex_wrapper & B){
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c_type temp = npy_type::real * B.real - npy_type::imag * B.imag;
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npy_type::imag = npy_type::real * B.imag + npy_type::imag * B.real;
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npy_type::real = temp;
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return (*this);
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}
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complex_wrapper& operator/=(const complex_wrapper & B){
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c_type denom = 1.0 / (B.real * B.real + B.imag * B.imag);
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c_type temp = (npy_type::real * B.real + npy_type::imag * B.imag) * denom;
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npy_type::imag = (npy_type::imag * B.real - npy_type::real * B.imag) * denom;
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npy_type::real = temp;
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return (*this);
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}
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bool operator==(const complex_wrapper& B) const{
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return npy_type::real == B.real && npy_type::imag == B.imag;
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}
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bool operator!=(const complex_wrapper& B) const{
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return npy_type::real != B.real || npy_type::imag != B.imag;
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}
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bool operator==(const c_type& B) const{
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return npy_type::real == B && npy_type::imag == c_type(0);
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}
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bool operator!=(const c_type& B) const{
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return npy_type::real != B || npy_type::imag != c_type(0);
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}
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complex_wrapper& operator=(const complex_wrapper& B){
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npy_type::real = B.real;
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npy_type::imag = B.imag;
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return (*this);
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}
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complex_wrapper& operator=(const c_type& B){
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npy_type::real = B;
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npy_type::imag = c_type(0);
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return (*this);
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}
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};
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template<class x, class y>
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std::ostream& operator<<(std::ostream& out, const complex_wrapper<x,y>& cw){
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return out << cw.real << " " << cw.imag;
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}
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typedef complex_wrapper<float, npy_cfloat> npy_cfloat_wrapper;
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typedef complex_wrapper<double,npy_cdouble> npy_cdouble_wrapper;
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typedef complex_wrapper<long double,npy_clongdouble> npy_clongdouble_wrapper;
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#endif
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