Stan Math Library  2.14.0
reverse mode automatic differentiation
likely.hpp
Go to the documentation of this file.
1 #ifndef STAN_MATH_PRIM_SCAL_META_LIKELY_HPP
2 #define STAN_MATH_PRIM_SCAL_META_LIKELY_HPP
3 
4 #ifdef __GNUC__
5 #define likely(x) __builtin_expect(!!(x), 1)
6 #define unlikely(x) __builtin_expect(!!(x), 0)
7 #else
8 #define likely(x) (x)
9 #define unlikely(x) (x)
10 #endif
11 
12 #endif

     [ Stan Home Page ] © 2011–2016, Stan Development Team.