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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
// ----------------------------------------------------------------------------
/*
{xrst_begin equal_op_seq.cpp}
EqualOpSeq: Example and Test
############################
{xrst_literal
// BEGIN C++
// END C++
}
{xrst_end equal_op_seq.cpp}
*/
// BEGIN C++
# include <cppad/cppad.hpp>
bool EqualOpSeq(void)
{ bool ok = true;
using CppAD::AD;
using CppAD::EqualOpSeq;
// domain space vector
size_t n = 1;
double x0 = 1.;
CPPAD_TESTVECTOR(AD<double>) x(n);
x[0] = x0;
// declare independent variables and start tape recording
CppAD::Independent(x);
AD<double> a = 1. + x[0]; // this variable is 1 + x0
AD<double> b = 2. * x[0]; // this variable is 2 * x0
// both a and b are variables
ok &= (a == b); // 1 + 1 == 2 * 1
ok &= ! EqualOpSeq(a, b); // 1 + x[0] != 2 * x[0]
// range space vector
size_t m = 1;
CPPAD_TESTVECTOR(AD<double>) y(m);
y[0] = a;
// both y[0] and a are variables
EqualOpSeq(y[0], a); // 2 * x[0] == 2 * x[0]
// create f: x -> y and stop tape recording
CppAD::ADFun<double> f(x, y);
// both a and b are parameters (after the creation of f above)
ok &= EqualOpSeq(a, b); // 1 + 1 == 2 * 1
return ok;
}
// END C++
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