function new(int max_array_size=2, max_value=2); this.max_array_size = max_array_size; if(max_value < max_array_size) this.max_value = max_array_size; else this.this.max_value = max_value; endfunction constraint array_size { array.size() inside {[1:max_array_size]}; } funct...
rand byte data; constraint data_cons{ data inside {[0:3],[8:10]}; }//data 的值可以从0,1,2,3,8,9,10中取出 即使如下面的array,取出的1,2,3,4的概率也是相同的 rand byte data; intarray ='{1,2,2,3,3,3,4,4,4,4} constrain data_c { data inside array;//此时,1,2,3,4取...
rand int array[5]; int q[$] = `{200, 53, 656}; constraint c_unique { unique {a, b, c}; // 该约束要求a和b和c两两之间互不相等 unique {a, b, array}; // 该约束要求a和b和array中的所有值互不相等 unique {array}; // 该约束要求array数组内的5个值互不相等 unique {a, q}; ...
rand int a, b, c; rand int array[5]; int q[$] = `{200, 53, 656}; constraint c_unique { unique {a, b, c}; // 该约束要求a和b和c两两之间互不相等 unique {a, b, array}; // 该约束要求a和b和array中的所有值互不相等 unique {array}; // 该约束要求array数组内的5个值互不...
constraint c{ array.size() inside {[1:MAX_SIZE];} } function new(); //分配最大容量 array = new[MAX_SIZE]; foreach(array[i]) array[i] = new();//保证数组中每个句柄元素都非悬空 endfunction endclass:RandArray RandArray ra;
rand Randstuff array[]; constraint c { array.size () inside{ [1:MAX_SIZE] }; } function new(); //分配最大容量 array = new[MAX_SIZE]; foreach (array[i]) array[i] = new(); endfunction ; endclass RandArray ra; initial begin //构造数组和所有对象 ra = new(); //随机化数组,...
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array=new[MAX_SIZE];constraintc{array.sise()inside{[1:MAX_SIZE]};}functionnew();array=new[...
9this.array=array; 10endfunction 11 12constrainta_cons{ainside{array};}//数组作为inside的集合成员 13 14virtualfunctionvoidprint(stringname=); 15$display(%s:a=%0d,b=%0d,name,a,b); 16endfunction 17endclass SystemVerilog芯片验证2024年2月7日16/35 随机属性的约束取值集合 测试模块在运行时可...
constraintaddr_c{foreach(trans_array[i]) if(i0)trans_array[i].addr!=trans_array[i-1].addr;} endclass programautomatictest; initialbegin ext_rand_transactionext_rand_trans;ext_rand_trans=new();assert(ext_rand_trans.randomize());foreach(ext_rand_trans.trans_array[i])begin $display(addr...