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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
// ----------------------------------------------------------------------------
/*
@begin graph_unary_op.cpp$$
$spell
sin
$$
$section Graph Unary Operator: Example and Test$$
$head Source Code$$
$srcthisfile%0%// BEGIN C++%// END C++%1%$$
$end
*/
// BEGIN C++
# include <cppad/cppad.hpp>
namespace { // BEGIN_EMPTY_NAMESPACE
typedef double (*unary_fun_t)(double);
bool test_unary_fun(unary_fun_t fun, CppAD::graph::graph_op_enum op_enum)
{ bool ok = true;
double eps99 = 99.0 * std::numeric_limits<double>::epsilon();
//
// C++ graph object
CppAD::cpp_graph graph_obj;
//
// value of constant in function
CPPAD_TESTVECTOR(double) p(1), x(1), c(1);
c[0] = 0.1;
p[0] = 0.2;
x[0] = 0.3;
if( std::isnan( fun( c[0] ) ) )
c[0] = 1.0;
if( std::isnan( fun( p[0] ) ) )
p[0] = 2.0;
if( std::isnan( fun( x[0] ) ) )
x[0] = 3.0;
//
// set scalars
graph_obj.function_name_set("unary_op example");
size_t n_dynamic_ind = 1;
graph_obj.n_dynamic_ind_set(n_dynamic_ind);
size_t n_variable_ind = 1;
graph_obj.n_variable_ind_set(n_variable_ind);
graph_obj.constant_vec_push_back( c[0] );
//
// node_4 : sin(p[0])
graph_obj.operator_vec_push_back(op_enum);
graph_obj.operator_arg_push_back(1);
//
// node_5 : sin(x[0])
graph_obj.operator_vec_push_back(op_enum);
graph_obj.operator_arg_push_back(2);
//
// node_6 : sin(c[0])
graph_obj.operator_vec_push_back(op_enum);
graph_obj.operator_arg_push_back(3);
//
// y[0] = sin(p[0])
graph_obj.dependent_vec_push_back(4);
// y[1] = sin(x[0])
graph_obj.dependent_vec_push_back(5);
// y[2] = sin(c[0])
graph_obj.dependent_vec_push_back(6);
//
// f(p, x) = y
CppAD::ADFun<double> f;
f.from_graph(graph_obj);
ok &= f.Domain() == 1;
ok &= f.size_dyn_ind() == 1;
ok &= f.Range() == 3;
//
//
// compute y = f(p, x)
f.new_dynamic(p);
CPPAD_TESTVECTOR(double) y = f.Forward(0, x);
//
// check result
ok &= CppAD::NearEqual(y[0], fun(p[0]), eps99, eps99);
ok &= CppAD::NearEqual(y[1], fun(x[0]), eps99, eps99);
ok &= CppAD::NearEqual(y[2], fun(c[0]), eps99, eps99);
// ------------------------------------------------------------------
// Convert to Graph graph and back again
f.to_graph(graph_obj);
f.from_graph(graph_obj);
// -------------------------------------------------------------------
//
// compute y = f(p, x)
f.new_dynamic(p);
y = f.Forward(0, x);
//
// check result
ok &= CppAD::NearEqual(y[0], fun(p[0]), eps99, eps99);
ok &= CppAD::NearEqual(y[1], fun(x[0]), eps99, eps99);
ok &= CppAD::NearEqual(y[2], fun(c[0]), eps99, eps99);
//
return ok;
}
double sign(double x)
{ return CppAD::sign(x);
}
double neg(double x)
{ return - x;
}
} // END_EMPTY_NAMESPACE
bool cpp_graph(void)
{ bool ok = true;
ok &= test_unary_fun(std::fabs, CppAD::graph::abs_graph_op);
ok &= test_unary_fun(std::acos, CppAD::graph::acos_graph_op);
ok &= test_unary_fun(std::acosh, CppAD::graph::acosh_graph_op);
ok &= test_unary_fun(std::asinh, CppAD::graph::asinh_graph_op);
ok &= test_unary_fun(std::atanh, CppAD::graph::atanh_graph_op);
ok &= test_unary_fun(std::erf, CppAD::graph::erf_graph_op);
ok &= test_unary_fun(std::erfc, CppAD::graph::erfc_graph_op);
ok &= test_unary_fun(std::expm1, CppAD::graph::expm1_graph_op);
ok &= test_unary_fun(std::log1p, CppAD::graph::log1p_graph_op);
ok &= test_unary_fun(neg, CppAD::graph::neg_graph_op);
ok &= test_unary_fun(sign, CppAD::graph::sign_graph_op);
ok &= test_unary_fun(std::sinh, CppAD::graph::sinh_graph_op);
ok &= test_unary_fun(std::sin, CppAD::graph::sin_graph_op);
ok &= test_unary_fun(std::sqrt, CppAD::graph::sqrt_graph_op);
ok &= test_unary_fun(std::tanh, CppAD::graph::tanh_graph_op);
ok &= test_unary_fun(std::tan, CppAD::graph::tan_graph_op);
ok &= test_unary_fun(std::acosh, CppAD::graph::acosh_graph_op);
ok &= test_unary_fun(std::acosh, CppAD::graph::acosh_graph_op);
ok &= test_unary_fun(std::sin, CppAD::graph::sin_graph_op);
//
return ok;
}
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