cordic除法FPGA代码

以下是一个使用CORDIC算法实现除法的FPGA Verilog代码示例：

module cordic_divider (
  input signed [31:0] numerator,
  input signed [31:0] denominator,
  output reg signed [31:0] quotient
);

  // 设置比例因子为2^30
  parameter SCALE_FACTOR = 1 << 30;

  reg signed [31:0] x;
  reg signed [31:0] y;
  reg signed [31:0] z;
  reg signed [31:0] angle;
  reg signed [31:0] shift;
  reg signed [31:0] k;
  reg signed [31:0] d;

  assign quotient = x;

  always @* begin
    // 初始化CORDIC参数
    x = numerator * SCALE_FACTOR;
    y = denominator * SCALE_FACTOR;
    z = 0;
    angle = 0;
    shift = 1;
    k = 0;

    // 迭代计算CORDIC旋转角度和比例因子
    for (int i = 0; i < 32; i++) begin
      d = y >> i;
      if (x >= 0) begin
        z = z + d;
        x = x - (d << i);
        angle = angle + (shift << i);
      end else begin
        z = z - d;
        x = x + (d << i);
        angle = angle - (shift << i);
      end
      shift = shift >> 1;
    end

    // 计算商
    quotient = z * SCALE_FACTOR / numerator;
  end
endmodule

该代码使用32次迭代计算CORDIC旋转角度和比例因子，并使用最终的比例因子计算商。需要注意的是，这个实现仅用于示范，实际应用中需要进行更多的优化和调整以提高精度和速度。