mirror of https://github.com/zachjs/sv2v.git
34 lines
1.4 KiB
Plaintext
34 lines
1.4 KiB
Plaintext
|
`define COUNT_ONES(expr) (0 \
|
||
|
|
+ ((expr) >> 0 & 1'b1) + ((expr) >> 1 & 1'b1) + ((expr) >> 2 & 1'b1) + ((expr) >> 3 & 1'b1) \
|
||
|
|
+ ((expr) >> 4 & 1'b1) + ((expr) >> 5 & 1'b1) + ((expr) >> 6 & 1'b1) + ((expr) >> 7 & 1'b1) \
|
||
|
|
+ ((expr) >> 8 & 1'b1) + ((expr) >> 9 & 1'b1) + ((expr) >> 10 & 1'b1) + ((expr) >> 11 & 1'b1) \
|
||
|
|
+ ((expr) >> 12 & 1'b1) + ((expr) >> 13 & 1'b1) + ((expr) >> 14 & 1'b1) + ((expr) >> 15 & 1'b1) \
|
||
|
|
+ ((expr) >> 16 & 1'b1) + ((expr) >> 17 & 1'b1) + ((expr) >> 18 & 1'b1) + ((expr) >> 19 & 1'b1) \
|
||
|
|
+ ((expr) >> 20 & 1'b1) + ((expr) >> 21 & 1'b1) + ((expr) >> 22 & 1'b1) + ((expr) >> 23 & 1'b1) \
|
||
|
|
+ ((expr) >> 24 & 1'b1) + ((expr) >> 25 & 1'b1) + ((expr) >> 26 & 1'b1) + ((expr) >> 27 & 1'b1) \
|
||
|
|
+ ((expr) >> 28 & 1'b1) + ((expr) >> 29 & 1'b1) + ((expr) >> 30 & 1'b1) + ((expr) >> 31 & 1'b1) \
|
||
|
|
)
|
||
|
|
|
||
|
|
module top;
|
||
|
|
reg [31:0] data;
|
||
|
|
|
||
|
|
`define TEST(idx, pattern, in_width, out_width) \
|
||
|
|
localparam p``idx = pattern; \
|
||
|
|
wire [in_width - 1:0] i``idx; \
|
||
|
|
wire [out_width - 1:0] o``idx; \
|
||
|
|
assign i``idx = data[0+:in_width]; \
|
||
|
|
Example #(p``idx, in_width) e``idx(i``idx, o``idx);
|
||
|
|
|
||
|
|
`TEST(1, 5'b10101, 5, 3)
|
||
|
|
`TEST(2, 10'b1110001111, 10, 7)
|
||
|
|
|
||
|
|
integer i;
|
||
|
|
initial begin
|
||
|
|
data = 0;
|
||
|
|
for (i = 0; i < 100; i = i + 1) begin
|
||
|
|
data = 1664525 * data + 1013904223;
|
||
|
|
#1 $display("%b %b %b", data, o1, o2);
|
||
|
|
end
|
||
|
|
end
|
||
|
|
endmodule
|