Hi, I try to add a function in a constraint, but it doesn’t work. the output is always 0. class random_a; rand bit [31:0] a; function int sum_count(bit[31:0] b); int count = 0; for (int i=0; i<31; i++) begin if (b[i] != b[i+1]) count ++; end return count; endfunction co…

[image] Regarding function in constraints SystemVerilog In reply to MICRO_91 : User defined functions in constraints do not get in-lined. That is why all those rules about using function in constraints exist. A function body that refers to variables outside the definition…

Adding a function in constraint doesn't work

UVM

dave_59 November 18, 2024, 10:53pm 3