print("矩阵转换为向量v:"); // 内积(点积)-矩阵乘法 cout << "内积(点积)as_scalar(r*q): " << as_scalar(r*q) << endl; // 外积(叉积)-笛卡尔积 cout << "外积(叉积)q*r: " << endl << q*r << endl; // 乘法和累加运算 (不创建临时矩阵) (A % B 等效 A .* B,最后累加...
fn_as_scalar.hpp /usr/include/armadillo_bits/fn_chi2rnd.hpp /usr/include/armadillo_bits/fn_chol.hpp /usr/include/armadillo_bits/fn_clamp.hpp /usr/include/armadillo_bits/fn_cond_rcond.hpp /usr/include/armadillo_bits/fn_conv.hpp /usr/include/armadillo_bits/fn_conv_to.hpp /usr/include/...
The BLAS (Basic Linear Algebra Subprograms)are routines that provide standard building blocks for performing basic vectorand matrix operations. The Level 1 BLAS perform scalar, vector andvector-vector operations, the Level 2 BLAS perform matrix-vector operations,and the Level 3 BLAS perform matrix-ma...
cout <<"as_scalar( r*inv(diagmat(B))*q ) = "; cout << as_scalar( r*inv(diagmat(B))*q ) << endl; cout <<"k*trans(B)*C = "<< endl << k*trans(B)*C; return0; 5运行结果 编译运行结果如下: PS:需要数学库文件或有问题请联系新浪微博@几米区©...
n_cols; arma::colvec coeffs = arma::solve(X, y); arma::colvec resid = y - X * coeffs; double sig2 = arma::as_scalar(arma::trans(resid) * resid / (n-k)); arma::colvec std_errs = arma::sqrt(sig2 * arma::diagvec( arma::inv(arma::trans(X)*X)) ); // We take ...
在C++中，cin是一个头文件iostream中的标准输入流，它用于从键盘读取输入。cin函数可以读取多种类型的...
Routines categorized as Level 1 perform scalar-vector and vector-vector operations. Euclidean norm: √(xᴴ·x) or √(xᵀ·x) Calculates the norm of a (complex) vector. xᴴ is the conjugate of x xᵀ is the transpose of x scrnm2/dznrm2, snrm2/dnrm2 scrnm2: complex, single or...