#ifndef XSTRTOUL_H_ # define XSTRTOUL_H_ 1 # define STRING_TO_UNSIGNED 1 /* Undefine this symbol so we can include xstrtol.h a second time. Otherwise, a program that wanted both xstrtol.h and xstrtoul.h would never get the declaration corresponding to the header file included after the first one. */ # undef XSTRTOL_H_ # include "xstrtol.h" #endif /* not XSTRTOUL_H_ */