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`timescale 1ns / 1ps

module modexpa7_adder64_carry32
  (
   input wire          clk,
   input wire [31: 0]  t,
   input wire [31: 0]  x,
   input wire [31: 0]  y,
   output wire [31: 0] s,
   input wire [31: 0]  c_in,
   output wire [31: 0] c_out
   );


   //
   // Multiplier
   //
   wire [63: 0]        multiplier_out;

   dsp_multiplier_a7 dsp_multiplier
     (
      .clk             (clk),
      .a               (x),
      .b               (y),
      .p               (multiplier_out)
      );


   //
   // Carry and T
   //
   wire [63: 0]        t_ext = {{32{1'b0}}, t};
   wire [63: 0]        c_ext = {{32{1'b0}}, c_in};


   //
   // Sum
   //
   wire [63: 0]        sum = multiplier_out + c_in + t;


   //
   // Output
   //
   assign s = sum[31: 0];
   assign c_out = sum[63:32];


endmodule