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| class fibonacci; | |
| rand int unsigned f_ary[]; | |
| rand int unsigned fibonacci_length; | |
| constraint f_ary_size_cn { | |
| f_ary.size() == fibonacci_length; | |
| } | |
| constraint f_ary_cn { | |
| foreach (f_ary[i]) { | |
| if (i == 0 || i == 1) { | |
| f_ary[i] == i; | |
| } | |
| else { | |
| f_ary[i] == f_ary[i-1] + f_ary[i-2]; | |
| } | |
| } | |
| } | |
| endclass : fibonacci | |
| module top(); | |
| fibonacci F; | |
| initial begin | |
| F = new(); | |
| if (!F.randomize() with { fibonacci_length == 10;}) begin | |
| $fatal("Randomization failed"); | |
| end | |
| else begin | |
| $display("Lengh of Fibonacci series:%0d", F.fibonacci_length); | |
| $write("Fibonaci series: "); | |
| for (int unsigned i=0; i<F.fibonacci_length; i++) begin | |
| if (i != F.fibonacci_length - 1) begin | |
| $write("%0d, ", F.f_ary[i]); | |
| end | |
| else begin | |
| $write("%0d\n", F.f_ary[i]); | |
| end | |
| end | |
| end | |
| end | |
| endmodule : top | |
| //Output: | |
| // Lengh of Fibonacci series:10 | |
| // Fibonacci series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 |
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