stan::math::exp(Eigen::Matrix) will have an specialized version for double that will check for nan inputs
stan::math::exp(Eigen::Matrix) will have an specialized version for double that will check for nan inputs

stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/stan,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/math