isnan() [2/2]

template<typename T , typename = require_autodiff_scalar_t<T>>

bool stan::math::isnan ( const T &  x )

inline

Return true if specified argument is not-a-number.

Overloads std::isnan from <cmath> for argument-dependent lookup.

Template Parameters

ADType

type of argument

Parameters

[in]

x

argument

Returns

true if argument is not-a-number

Definition at line 21 of file isnan.hpp.