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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: 2023-23 Bradley M. Bell
# include <cppad/local/val_graph/tape.hpp>
# include <cppad/local/val_graph/val_type.hpp>
/*
{xrst_begin val_vec_xam.cpp dev}
Conditional Expression Value Operator Example
#############################################
{xrst_literal
// BEGIN_C++
// END_C++
}
{xrst_end val_vec_xam.cpp}
*/
// BEGIN_C++
bool vec_xam(void)
{ bool ok = true;
//
// tape_t, Vector, addr_t, compare_lt_enum
using CppAD::local::val_graph::tape_t;
using CppAD::local::val_graph::Vector;
using CppAD::local::val_graph::addr_t;
//
// tape, ok
tape_t<double> tape;
addr_t n_ind = 3;
addr_t index_of_nan = tape.set_ind(n_ind);
ok &= index_of_nan == n_ind;
//
// x0, x1, x2
addr_t x0 = 0; // x[0]
addr_t x1 = 1; // x[1]
addr_t x2 = 2; // x[2]
//
// one, four
addr_t one = tape.record_con_op(1.0);
addr_t four = tape.record_con_op(4.0);
//
// which_vector
// vector[0] = 4, vector[1] = 1
Vector<addr_t> initial = {four, one};
addr_t which_vector = tape.record_vec_op(initial);
//
// dep_vec, tape
Vector<addr_t> dep_vec(3);
dep_vec[0] = tape.record_load_op(which_vector, x0); // vector[ x[0] ]
//
// dep_vec, tape
// vector[ x[1] ] = x[2]
tape.record_store_op(which_vector, x1, x2);
//
// set_dep
tape.set_dep( dep_vec );
dep_vec[1] = tape.record_load_op(which_vector, x0); // vector[ x[0] ]
dep_vec[2] = tape.record_load_op(which_vector, x1); // vector[ x[1] ]
//
// x
Vector<double> x(n_ind);
x[0] = 0.0;
x[1] = 1.0;
x[2] = 2.0;
//
// trace
bool trace = false;
//
// val_vec
Vector<double> val_vec( tape.n_val() );
for(addr_t i = 0; i < n_ind; ++i)
val_vec[i] = x[i];
tape.eval(trace, val_vec);
//
// ok
ok &= tape.n_op() == 8;
ok &= tape.con_vec().size() == 3;
ok &= tape.arg_vec().size() == 3 + 1 + 3 * 2 + 3;
ok &= tape.n_val() == n_ind + 3 + 3;
//
// y
Vector<double> y(3);
for(size_t i = 0; i < 3; ++i)
y[i] = val_vec[ dep_vec[i] ];
//
// ok
ok &= y[0] == 4.0;
ok &= y[1] == 4.0;
ok &= y[2] == x[2];
//
return ok;
}
// END_C++
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