is_nan() [1/4]

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

bool stan::math::is_nan ( T &&  x )

inline

Returns 1 if the input's value is NaN and 0 otherwise.

Delegates to is_nan.

Template Parameters

T	inner type of the fvar

Parameters

x	Value to test.

Returns

1 if the value is NaN and 0 otherwise.

Definition at line 22 of file is_nan.hpp.