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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
// SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
// SPDX-FileContributor: 2003-22 Bradley M. Bell
// ----------------------------------------------------------------------------
/*
Test the use of the parameters in VecAD element assignments
*/
# include <cppad/cppad.hpp>
typedef CppAD::AD<double> ADdouble;
typedef CppAD::AD< ADdouble > ADDdouble;
bool VecADPar(void)
{
using namespace CppAD;
bool ok = true;
CPPAD_TESTVECTOR( ADdouble ) x(2);
x[0] = 0;
x[1] = 0;
Independent(x);
CPPAD_TESTVECTOR( ADDdouble ) y(1);
y[0] = 1;
Independent(y);
VecAD< ADdouble > v(2);
ADDdouble zero(0);
ADDdouble one(1);
v[zero] = x[0]; // these two parameter values are equal,
v[one] = x[1]; // but they are not identically equal
CPPAD_TESTVECTOR( ADDdouble ) z(1);
z[0] = v[zero] + v[one];
// f(y) = x[0] + x[1]
ADFun< ADdouble > f(y, z);
CPPAD_TESTVECTOR( ADdouble ) a( f.Domain() );
CPPAD_TESTVECTOR( ADdouble ) b( f.Range() );
// fy = f(y) = x[0] + x[1]
a[0] = 0.;
b = f.Forward(0, a);
// check value of f
ok &= b[0] == (x[0] + x[1]);
// g(x) = x[0] + x[1];
ADFun<double> g(x, b);
CPPAD_TESTVECTOR( double ) c( g.Domain() );
CPPAD_TESTVECTOR( double ) d( g.Range() );
// d = g(1, 2)
c[0] = 1.; // these tow values are not equal and correspond
c[1] = 2.; // to replacements for the equal parameter values above
d = g.Forward(0, c);
// check function value
ok &= (d[0] == c[0] + c[1]);
return ok;
}
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