lang2/include/lang2/builtins.x.h

// X macro: Define a macro named X, then include this file, then undef X.

#ifdef X
X("+", l2_builtin_add)
X("-", l2_builtin_sub)
X("*", l2_builtin_mul)
X("/", l2_builtin_div)
X("print", l2_builtin_print)
X("len", l2_builtin_len)
#endif