diff options
Diffstat (limited to 'boost/math/special_functions/detail/bessel_j0.hpp')
| -rw-r--r-- | boost/math/special_functions/detail/bessel_j0.hpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/boost/math/special_functions/detail/bessel_j0.hpp b/boost/math/special_functions/detail/bessel_j0.hpp index ee25d46f61..a07052d73e 100644 --- a/boost/math/special_functions/detail/bessel_j0.hpp +++ b/boost/math/special_functions/detail/bessel_j0.hpp @@ -22,8 +22,38 @@ namespace boost { namespace math { namespace detail{ template <typename T> +T bessel_j0(T x); + +template <class T> +struct bessel_j0_initializer +{ + struct init + { + init() + { + do_init(); + } + static void do_init() + { + bessel_j0(T(1)); + } + void force_instantiate()const{} + }; + static const init initializer; + static void force_instantiate() + { + initializer.force_instantiate(); + } +}; + +template <class T> +const typename bessel_j0_initializer<T>::init bessel_j0_initializer<T>::initializer; + +template <typename T> T bessel_j0(T x) { + bessel_j0_initializer<T>::force_instantiate(); + static const T P1[] = { static_cast<T>(BOOST_MATH_BIG_CONSTANT(T, 64, -4.1298668500990866786e+11)), static_cast<T>(BOOST_MATH_BIG_CONSTANT(T, 64, 2.7282507878605942706e+10)), |