vari_value() [2/2]

template<typename T >

template<typename S , require_convertible_t< S &, T > * = nullptr>

stan::math::vari_value< T, require_t< std::is_floating_point< T > > >::vari_value ( S  x, bool  stacked  )

inlinenoexcept

Construct a variable implementation from a value.

The adjoint is initialized to zero and if stacked is false this vari will be not be put on the var_stack. Instead it will only be put on a stack to keep track of whether the adjoint needs to be set to zero. Variables should be constructed before variables on which they depend to insure proper partial derivative propagation. During derivative propagation, the chain() method of each variable will be called in the reverse order of construction.

Template Parameters

S	n floating point type.

Parameters

x	Value of the constructed variable.
stacked	If false will put this this vari on the nochain stack so that its chain() method is not called.

Definition at line 126 of file vari.hpp.