C++ (Cpp) diagonal_solve примеры использования

Пример #1

Файл: dense_matrix.cpp Проект: altairpearl/symengine

void LDL_solve(const DenseMatrix &A, const DenseMatrix &b, DenseMatrix &x)
{
    DenseMatrix L = DenseMatrix(A.nrows(), A.ncols());
    DenseMatrix D = DenseMatrix(A.nrows(), A.ncols());
    DenseMatrix x_ = DenseMatrix(b.nrows(), b.ncols());

    if (not is_symmetric_dense(A))
        throw SymEngineException("Matrix must be symmetric");

    LDL(A, L, D);
    forward_substitution(L, b, x);
    diagonal_solve(D, x, x_);
    transpose_dense(L, D);
    back_substitution(D, x_, x);
}

Пример #2

Файл: dense_matrix.cpp Проект: nitish-mittal/csympy

void LDL_solve(const DenseMatrix &A, const DenseMatrix &b, DenseMatrix &x)
{
    DenseMatrix L = DenseMatrix(A.nrows(), A.ncols());
    DenseMatrix D = DenseMatrix(A.nrows(), A.ncols());
    DenseMatrix x_ = DenseMatrix(b.nrows(), 1);

    if (!is_symmetric_dense(A))
        throw std::runtime_error("Matrix must be symmetric");

    LDL(A, L, D);
    forward_substitution(L, b, x);
    diagonal_solve(D, x, x_);
    transpose_dense(L, D);
    back_substitution(D, x_, x);
}