SCM_CLASS_INTEGER  119 src/bignum.c       SCM_SET_CLASS(b, SCM_CLASS_INTEGER);
SCM_CLASS_INTEGER  131 src/bignum.c       SCM_SET_CLASS(var_, SCM_CLASS_INTEGER);             \
SCM_CLASS_INTEGER  451 src/class.c            if (SCM_INTP(obj))  return SCM_CLASS_INTEGER;
SCM_CLASS_INTEGER 3026 src/class.c        CINIT(SCM_CLASS_INTEGER,          "<integer>");
SCM_CLASS_INTEGER 2005 src/gauche.h   #define SCM_BIGNUMP(obj)       SCM_XTYPEP(obj, SCM_CLASS_INTEGER)