-- C code formatting for DSP block processing.

module Block (z             -- Delay operator
             ) where

import Term      -- Algebraic expressions
import Ai        -- Operations on algebraic expressions
import Function  -- Representation of flat code (i.e. SSA/ANF)

import Complex   -- Complex numbers



-- Unit delay.  

-- Isn't it nice that this operator survives Term -> Function
-- conversion?  Meaning can be attached to it after flattening code.
z x = Op (Sym "z") [x]


-- Basic idea: 
--  * wrap the code in a "for (i=0; i<n; i++) { ... }" loop
--  * convert input/output access to indexed array accesses
--  * convert delay ops to struct refs