RB_FLONUM_P       397 include/ruby/ruby.h #define FLONUM_P(x) RB_FLONUM_P(x)
RB_FLONUM_P       516 include/ruby/ruby.h 	RB_FLONUM_P(obj) || \
RB_FLONUM_P      1952 include/ruby/ruby.h 	if (RB_FLONUM_P(obj)) return rb_cFloat;
RB_FLONUM_P      1968 include/ruby/ruby.h         if (RB_FLONUM_P(obj)) return RUBY_T_FLOAT;