fquad make = (1.000000, 2.000000, 3.000000, 4.000000)
fquad rev  = (4.000000, 3.000000, 2.000000, 1.000000)
fquad sum  = 10.000000
dquad make = (1.500000, 2.500000, 3.500000, 4.500000)
dquad rev  = (4.500000, 3.500000, 2.500000, 1.500000)
dquad sum  = 12.000000