// -*- verilog -*-
//
//  USRP - Universal Software Radio Peripheral
//
//  Copyright (C) 2008 Matt Ettus
//

//

// Clipping "macro", keeps the bottom bits

module clip
  #(parameter bits_in=0,
    parameter bits_out=0)
    (input [bits_in-1:0] in,
     output [bits_out-1:0] out);
   
   wire 		   overflow = |in[bits_in-1:bits_out-1] & ~(&in[bits_in-1:bits_out-1]);   
   assign 		   out = overflow ? 
			   (in[bits_in-1] ? {1'b1,{(bits_out-1){1'b0}}} : {1'b0,{(bits_out-1){1'b1}}}) :
			   in[bits_out-1:0];
   
endmodule // clip