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lines 6-54 of file: speed/double/mat_mul.cpp
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{xrst_begin double_mat_mul.cpp}

Double Speed: Matrix Multiplication
###################################

Specifications
**************
See :ref:`link_mat_mul-name` .

Implementation
**************
{xrst_spell_off}
{xrst_code cpp} */
# include <cppad/cppad.hpp>
# include <cppad/speed/mat_sum_sq.hpp>
# include <cppad/speed/uniform_01.hpp>

// Note that CppAD uses global_option["memory"] at the main program level
# include <map>
extern std::map<std::string, bool> global_option;

bool link_mat_mul(
    size_t                           size     ,
    size_t                           repeat   ,
    CppAD::vector<double>&           x        ,
    CppAD::vector<double>&           z        ,
    CppAD::vector<double>&           dz
)
{
    if(global_option["onetape"]||global_option["atomic"]||global_option["optimize"])
        return false;
    // -----------------------------------------------------
    size_t n = size * size; // number of independent variables
    CppAD::vector<double> y(n);

    while(repeat--)
    {  // get the next matrix
        CppAD::uniform_01(n, x);

        // do computation
        mat_sum_sq(size, x, y, z);

    }
    return true;
}
/* {xrst_code}
{xrst_spell_on}

{xrst_end double_mat_mul.cpp}