1 #ifndef STAN_MATH_FWD_SCAL_FUN_IS_INF_HPP 2 #define STAN_MATH_FWD_SCAL_FUN_IS_INF_HPP 3 4 #include <stan/math/fwd/core.hpp> 5 #include <stan/math/prim/scal/fun/is_inf.hpp> 6 7 namespace stan { 8 namespace math { 9 10 /** 11 * Returns 1 if the input's value is infinite and 0 otherwise. 12 * 13 * Delegates to <code>is_inf</code>. 14 * 15 * @param x Value to test. 16 * @return <code>1</code> if the value is infinite and <code>0</code> otherwise. 17 */ 18 template <typename T> is_inf(const fvar<T> & x)19inline int is_inf(const fvar<T>& x) { 20 return is_inf(x.val()); 21 } 22 23 } // namespace math 24 } // namespace stan 25 #endif 26