(program	
 (foreign fun float2 -> float2
  [(:= float) 
   (:= float)])

 (foreign fun float3 -> float3
  [(:= float) 
   (:= float) 
   (:= float)])

 (foreign fun float4 -> float4
  [(:= float) 
   (:= float) 
   (:= float) 
   (:= float)]))