RUBY_T_FIXNUM     495 include/ruby/ruby.h #define T_FIXNUM RUBY_T_FIXNUM
RUBY_T_FIXNUM     520 include/ruby/ruby.h 	((type) == RUBY_T_FIXNUM) ? RB_FIXNUM_P(obj) : \
RUBY_T_FIXNUM    1967 include/ruby/ruby.h 	if (RB_FIXNUM_P(obj)) return RUBY_T_FIXNUM;