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#pragma once
#include <sstream>
#include <stddef.h>
#include <iostream>
template <size_t R, size_t C, typename T = float>
struct Matrix {
public:
Matrix<R, C, T>() : elements{} {};
template<typename ...Args>
explicit Matrix<R, C, T>(Args... args): elements{ args... } {};
Vector<C, T> row(size_t index) {
return { &elements[index * C] };
}
Vector<R, T> col(size_t index) {
Vector<R, T> result{};
for (int i = 0; i < R; i++) {
result[i] = this->operator()(index, i);
}
return result;
}
template<size_t N>
Matrix<R, N, T> operator*(Matrix<C, N, T> other) {
Matrix<R, N, T> result{};
for (int y = 0; y < R; y++) {
for (int x = 0; x < N; x++) {
auto r = row(y);
auto c = other.col(x);
auto dot = r * c;
std::cout << x << ", " << y << ": "
<< "(" << r.string() << ", " << c.string() << ")"
<< dot << std::endl;
result(x, y) = dot;
}
}
return result;
}
auto& operator()(size_t x, size_t y) {
return elements[y * C + x];
}
std::string string() {
std::stringstream str{};
for (int x = 0; x < R; x++) {
for (int y = 0; y < C; y++) {
str << this->operator()(x, y) << " ";
}
str << "\n";
}
return str.str();
}
T elements[R * C];
};
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