Stan Math Library  2.15.0
reverse mode automatic differentiation
cbrt.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_CBRT_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_CBRT_HPP
3 
4 #include <stan/math/fwd/core.hpp>
6 
7 namespace stan {
8  namespace math {
9 
17  template <typename T>
18  inline fvar<T> cbrt(const fvar<T>& x) {
19  return fvar<T>(cbrt(x.val_),
20  x.d_ / (3 * square(cbrt(x.val_))));
21  }
22 
23  }
24 }
25 #endif
fvar< T > cbrt(const fvar< T > &x)
Return cube root of specified argument.
Definition: cbrt.hpp:18
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:14

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