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 namespace math {
10 
11 template <typename T>
12 inline fvar<T> inv(const fvar<T>& x) {
13  return fvar<T>(1 / x.val_, -x.d_ / square(x.val_));
14 }
15 } // namespace math
16 } // namespace stan
17 #endif
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:12
fvar< T > inv(const fvar< T > &x)
Definition: inv.hpp:12