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// $Id: elapsed_seconds.cpp 3788 2016-02-09 15:50:06Z bradbell $
/* --------------------------------------------------------------------------
CppAD: C++ Algorithmic Differentiation: Copyright (C) 2003-16 Bradley M. Bell
CppAD is distributed under multiple licenses. This distribution is under
the terms of the
GNU General Public License Version 3.
A copy of this license is included in the COPYING file of this distribution.
Please visit http://www.coin-or.org/CppAD/ for information on other licenses.
-------------------------------------------------------------------------- */
/*
$begin elapsed_seconds.cpp$$
$spell
Cpp
Lu
$$
$section Elapsed Seconds: Example and Test$$
$mindex seconds timer$$
$code
$srcfile%speed/example/elapsed_seconds.cpp%0%// BEGIN C++%// END C++%1%$$
$$
$end
*/
// BEGIN C++
# 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;
}
// END C++
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