inv() [6/6]

template<typename T , require_stan_scalar_or_eigen_t< T > * = nullptr>

auto stan::math::inv ( const var_value< T > &  a )

inline

Template Parameters

T	Arithmetic or a type inheriting from EigenBase. \[ \mbox{inv}(x) = \begin{cases} \frac{1}{x} & \mbox{if } -\infty\leq x \leq \infty \\[6pt] \textrm{NaN} & \mbox{if } x = \textrm{NaN} \end{cases} \]

\[ \frac{\partial\, \mbox{inv}(x)}{\partial x} = \begin{cases} -\frac{1}{x^2} & \mbox{if } -\infty\leq x\leq \infty \\[6pt] \textrm{NaN} & \mbox{if } x = \textrm{NaN} \end{cases} \]

Definition at line 31 of file inv.hpp.