1 #ifndef STAN_MATH_FWD_SCAL_FUN_LOG2_HPP 2 #define STAN_MATH_FWD_SCAL_FUN_LOG2_HPP const double LOG_2
The natural logarithm of 2, .
T d_
The tangent (derivative) of this variable.
const double NOT_A_NUMBER
(Quiet) not-a-number value.
T val_
The value of this variable.
fvar< T > log2(const fvar< T > &x)
Return the base two logarithm of the specified argument.
This template class represents scalars used in forward-mode automatic differentiation, which consist of values and directional derivatives of the specified template type.