pzbcm_min_max_finder

pzbcm_min_max_finder

https://github.com/pezy-computing/pzbcm/tree/master/pzbcm_min_max_finder

Overview

This interface implements functions to return the min/max value of the input values and its location.

Parameters

name	tyep/width	default value
ENTRIES	int	1
WIDTH	int	1
TYPE	type	logic[WIDTH-1:0]
RESULT	type	NA
COMPARE_WIDTH	int	$bits(TYPE)

Details

• ENTRIES
  • Specify number of the input values
• WIDTH/TYPE
  • Width/Type of the input values
• RESULT
  • Type of the output result
  • You need to specify a struct type which has following fields
    • data
      • Contains the result.
      • Its type is TYPE.
    • location
      • Indicates which input values is selected.
      • Its type is logic[ENTRIES-1:0].
• COMPARE_WIDTH
  • Specify how many bits of the input values are used for comparison.

Functions

find_min

This function returns the minimum value from the given input values.

find_max

This function returns the maximum value from the given input values.

Example

typedef struct packed {
  logic [1:0] data;
  logic [3:0] location;
} result_t;

pzbcm_min_max_finder #(
  .ENTRIES        (4        ),
  .WIDTH          (2        ),
  .COMPARE_WIDTH  (1        ),
  .RESULT         (result_t )
) u_min_max_finder();

logic [3:0][1:0]  input_data;
result_t          result;

initial begin
  input_data[0] = 2;
  input_data[1] = 0;
  input_data[2] = 1;
  input_data[3] = 3;

  result  = u_min_max_finder.find_min(input_data);  //  data: 2 location: 4'b0001
  result  = u_min_max_finder.find_max(input_data);  //  data: 1 location: 4'b0100
end