| Prev | Next |  |  |  |  |  | elapsed_seconds.cpp | Headings

Elapsed Seconds: Example and Test
`

    # include <cppad/utility/elapsed_seconds.hpp>

    # include <iostream>
    # include <algorithm>
    # include <cmath>

    # define CPPAD_DEBUG_ELAPSED_SECONDS 0

    bool elapsed_seconds(void)
    {     bool ok = true;

         double max_diff = 0.;
         double s0 = CppAD::elapsed_seconds();
         double s1 = CppAD::elapsed_seconds();
         double s2 = CppAD::elapsed_seconds();
         while(s2 - s0 < 1.)
         {     max_diff = std::max(s2 - s1, max_diff);
              s1 = s2;
              s2 = CppAD::elapsed_seconds();

         }
    # if CPPAD_DEBUG_ELAPSED_SECONDS
         std::cout << "max_diff = " << max_diff << std::endl;
    # endif
         ok &= 0. < max_diff && max_diff < .04;
         return ok;
    }

`

Input File: speed/example/elapsed_seconds.cpp