/* $Id: integer.cpp 2506 2012-10-24 19:36:49Z bradbell $ */
/* --------------------------------------------------------------------------
CppAD: C++ Algorithmic Differentiation: Copyright (C) 2003-12 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 integer.cpp$$
$spell
Cpp
cstddef
$$
$section Convert From AD to Integer: Example and Test$$
$index Integer$$
$index example, Integer$$
$index test, Integer$$
$code
$verbatim%example/integer.cpp%0%// BEGIN C++%// END C++%1%$$
$$
$end
*/
// BEGIN C++
# include <cppad/cppad.hpp>
bool Integer(void)
{ bool ok = true;
using CppAD::AD;
using CppAD::Integer;
// domain space vector
size_t n = 2;
CPPAD_TESTVECTOR(AD<double>) x(n);
x[0] = 3.5;
x[1] = 4.5;
// check integer before recording
ok &= (Integer(x[0]) == 3);
ok &= (Integer(x[1]) == 4);
// start recording
// declare independent variables and start tape recording
CppAD::Independent(x);
// check integer during recording
ok &= (Integer(x[0]) == 3);
ok &= (Integer(x[1]) == 4);
// check integer for VecAD element
CppAD::VecAD<double> v(1);
AD<double> zero(0);
v[zero] = 2;
ok &= (Integer(v[zero]) == 2);
// range space vector
size_t m = 1;
CPPAD_TESTVECTOR(AD<double>) y(m);
y[0] = - x[1];
// create f: x -> y and stop recording
CppAD::ADFun<double> f(x, y);
// check integer after recording
ok &= (Integer(x[0]) == 3.);
ok &= (Integer(x[1]) == 4.);
ok &= (Integer(y[0]) == -4.);
return ok;
}
// END C++