140 lines
2.8 KiB
C++
140 lines
2.8 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __COMPLEX_H__
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#define __COMPLEX_H__
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#include <cstdint>
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#include <complex>
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#include <cmath>
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constexpr float pi { 3.141592653589793238462643383279502884f };
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namespace std {
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template<> struct complex<int8_t> {
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public:
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typedef int8_t value_type;
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typedef uint16_t rep_type;
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// constexpr complex(
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// rep_type r
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// ) : _rep { r }
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// {
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// }
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constexpr complex(
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int8_t re = 0,
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int8_t im = 0
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) : _v { re, im }
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{
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}
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// constexpr complex(
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// const complex& o
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// ) : _rep { o._rep }
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// {
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// }
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constexpr int8_t real() const { return _v[0]; }
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constexpr int8_t imag() const { return _v[1]; }
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void real(int8_t v) { _v[0] = v; }
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void imag(int8_t v) { _v[1] = v; }
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constexpr uint16_t __rep() const {
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return _rep;
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}
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private:
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union {
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value_type _v[2];
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rep_type _rep;
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};
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};
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template<> struct complex<int16_t> {
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public:
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typedef int16_t value_type;
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typedef uint32_t rep_type;
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// constexpr complex(
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// rep_type r
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// ) : _rep { r }
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// {
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// }
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constexpr complex(
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int16_t re = 0,
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int16_t im = 0
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) : _v { re, im }
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{
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}
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// constexpr complex(
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// const complex& o
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// ) : _rep { o._rep }
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// {
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// }
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constexpr int16_t real() const { return _v[0]; }
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constexpr int16_t imag() const { return _v[1]; }
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void real(int16_t v) { _v[0] = v; }
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void imag(int16_t v) { _v[1] = v; }
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template<class X>
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complex<int16_t>& operator+=(const complex<X>& other) {
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_v[0] += other.real();
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_v[1] += other.imag();
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return *this;
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}
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constexpr uint32_t __rep() const {
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return _rep;
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}
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constexpr operator std::complex<float>() const {
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return {
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static_cast<float>(_v[0]),
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static_cast<float>(_v[1])
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};
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}
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private:
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union {
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value_type _v[2];
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rep_type _rep;
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};
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};
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} /* namespace std */
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using complex8_t = std::complex<int8_t>;
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using complex16_t = std::complex<int16_t>;
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using complex32_t = std::complex<int32_t>;
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static_assert(sizeof(complex8_t) == 2, "complex8_t size wrong");
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static_assert(sizeof(complex16_t) == 4, "complex16_t size wrong");
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static_assert(sizeof(complex32_t) == 8, "complex32_t size wrong");
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#endif/*__COMPLEX_H__*/
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