c++ - C++ 中 Fortran 风格的多维数组

Question

是否有一个 C++ 库提供 Fortran 风格的多维数组，支持切片、作为过程参数传递和体面的文档？我调查了blitz++但它死了!

Answer 1

我强烈建议 Armadillo :

Armadillo is a C++ linear algebra library (matrix maths) aiming towards a good balance between speed and ease of use

它是一个C++模板库:

A delayed evaluation approach is employed (at compile-time) to combine several operations into one and reduce (or eliminate) the need for temporaries; this is automatically accomplished through template meta-programming

网页中的一个简单例子:

#include <iostream>
#include <armadillo>

int main(int argc, char** argv)
{
    arma::mat A = arma::randu<arma::mat>(4,5);
    arma::mat B = arma::randu<arma::mat>(4,5);

    std::cout << A*B.t() << std::endl;

    return 0;
}