rb_int_minus     3706 enum.c                 a = rb_int_plus(rb_int_minus(end, beg), LONG2FIX(1));
rb_int_minus     1874 numeric.c          n = rb_int_minus(num, r);
rb_int_minus     1902 numeric.c          return rb_int_minus(num, rb_int_modulo(num, f));
rb_int_minus     1926 numeric.c          return rb_int_plus(num, rb_int_minus(f, rb_int_modulo(num, f)));
rb_int_minus     1952 numeric.c      	return rb_int_plus(num, rb_int_minus(f, m));
rb_int_minus     1955 numeric.c      	return rb_int_minus(num, m);
rb_int_minus     5035 numeric.c          rb_define_method(rb_cInteger, "-", rb_int_minus, 1);