SCM_CLASS_REAL   3025 src/class.c        CINIT(SCM_CLASS_REAL,             "<real>");
SCM_CLASS_REAL   2093 src/gauche.h   #define SCM_FLONUMP(obj)           SCM_XTYPEP(obj, SCM_CLASS_REAL)
SCM_CLASS_REAL    135 src/number.c       SCM_SET_CLASS(f, SCM_CLASS_REAL);