Stan Math Library  2.11.0
reverse mode automatic differentiation
inv.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_INV_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_INV_HPP
3 
4 #include <stan/math/fwd/core.hpp>
5 
7 
8 namespace stan {
9 
10  namespace math {
11 
12  template <typename T>
13  inline
14  fvar<T>
15  inv(const fvar<T>& x) {
16  using stan::math::square;
17  return fvar<T>(1 / x.val_, -x.d_ / square(x.val_));
18  }
19  }
20 }
21 #endif
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:15
fvar< T > inv(const fvar< T > &x)
Definition: inv.hpp:15

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