Scm_IntegerClass 1990 src/gauche.h   SCM_CLASS_DECL(Scm_IntegerClass);
Scm_IntegerClass 1995 src/gauche.h   #define SCM_CLASS_INTEGER       (&Scm_IntegerClass)
Scm_IntegerClass   97 src/number.c   SCM_DEFINE_BUILTIN_CLASS(Scm_IntegerClass, number_print, NULL, NULL, NULL,