Florian Maurin
0af925cb01
libeigen/eigen!2652 Closes #998, #2142, #301, #1822, #1959, #805, #462, #308, #2146, #1335, #634, #81, and #46
26 lines
658 B
C++
26 lines
658 B
C++
// SPDX-FileCopyrightText: The Eigen Authors
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// SPDX-License-Identifier: MPL-2.0
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#include <Eigen/Dense>
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#include <cmath>
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#include <iostream>
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#include <unsupported/Eigen/AutoDiff>
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template <typename Scalar>
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Scalar f(const Scalar& x, const Scalar& y) {
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using std::sin;
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return x * x * y + sin(y);
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}
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int main() {
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typedef Eigen::AutoDiffScalar<Eigen::Vector2d> ADScalar;
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ADScalar x(2.0, Eigen::Vector2d::UnitX());
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ADScalar y(0.5, Eigen::Vector2d::UnitY());
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ADScalar z = f(x, y);
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std::cout << "f(x,y) = " << z.value() << "\n";
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std::cout << "df/dx = " << z.derivatives()[0] << "\n";
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std::cout << "df/dy = " << z.derivatives()[1] << "\n";
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}
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