vec2 make   = (1.500000, 2.500000)
vec2 swap   = (2.500000, 1.500000)
vec2 sum    = 4.000000
vec4f make  = (1.000000, 2.000000, 3.000000, 4.000000)
vec4f rev   = (4.000000, 3.000000, 2.000000, 1.000000)
vec4f sum   = 10.000000
pair64 make = (100, 200)
pair64 swap = (200, 100)
pair64 sum  = 300
quad32 make = (10, 20, 30, 40)
quad32 rev  = (40, 30, 20, 10)
quad32 sum  = 100