Write a constraint where you have a 32 bit value bit [31:0] val where you’d want to randomize this to where every randomization would only allow 2 bits to differ from the previous randomization. Can we solve it by using $countones(prev_val^cur_val) == 2) This is so because if only two bits are d…

[image] Regarding const'() cast SystemVerilog Hi , I was trying to understand working of const’() cast. LRM 6.24.1 mentions An expression may be changed to a constant with a const cast. const'(x) Consider the following code : class C; rand bit[2:0] a ; fu…

Verification Academy

Constraint Interview Question

SystemVerilog

constraint-randomization

dave_59 July 11, 2025, 4:00pm 13

Pattern Generation SystemVerilog

In reply to Rohi_417: It looks like your tool has not implemented a const cast. Maybe you have an older version. Please contact your vendor for support.

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