Stan Math Library  2.15.0
reverse mode automatic differentiation
derivative.hpp
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1 #ifndef STAN_MATH_MIX_MAT_FUNCTOR_DERIVATIVE_HPP
2 #define STAN_MATH_MIX_MAT_FUNCTOR_DERIVATIVE_HPP
3 
4 #include <stan/math/fwd/core.hpp>
6 #include <stan/math/rev/core.hpp>
7 #include <vector>
8 
9 namespace stan {
10  namespace math {
11 
23  template <typename T, typename F>
24  void
25  derivative(const F& f,
26  const T& x,
27  T& fx,
28  T& dfx_dx) {
29  fvar<T> x_fvar = fvar<T>(x, 1.0);
30  fvar<T> fx_fvar = f(x_fvar);
31  fx = fx_fvar.val_;
32  dfx_dx = fx_fvar.d_;
33  }
34 
35  }
36 }
37 #endif
void derivative(const F &f, const T &x, T &fx, T &dfx_dx)
Return the derivative of the specified univariate function at the specified argument.
Definition: derivative.hpp:25

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