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...
randinta,b,c;randintarray[5];intq[$]=`{200,53,656};constraintc_unique{unique{a,b,c};// 该约束要求a和b和c两两之间互不相等unique{a,b,array};// 该约束要求a和b和array中的所有值互不相等unique{array};// 该约束要求array数组内的5个值互不相等unique{a,q};// 该约束要求a随机出来的值...
bit [3:0] [7:0]bytes; // 4 bytes packed into 32-bits bytes =32'hCafe Dada; 1. 2. 混合packed array和unpacked array: bit [3:0] [7:0] barray[31]; // Packed: 3x32-bit bit [31:0] Iw =32'h0123 4567; // Word barray[01 = lw; barray[0][31 =8'h01; barray[0] [1...
rand int array[5]; int q[$] = `{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}; ...
unique {array}; // 该约束要求array数组内的5个值互不相等 unique {a, q}; // 该约束要求a随机出来的值不等于q中的任一值 } 循环约束:在对队列或者数组进行随机化的时候,可以使用foreach来对其循环施加约束。 rand int q[$]; constraint c_foreach { ...
class UniqueArray; bit[7:0] ua[64]; randc bit[7:0] val; foreach(ua[i]) begin randomize(); ua[i] = val; $display("ua[%d] = %h",i,ua[i]); end endclass 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. constraint 增加约束 ...
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,...
我尝试在Verilog中定义内存数组的某些部分,比如这个 module test ( input clk, input [7:0] in1, input [23:0] in2 ); wire [7:0] array_in2 [2:0]; reg [7:0] buffer [5:0]; genvar i; generate for (i = 0; i < 3; i = i + 1) begin: fillmsg assign array_in2[i] = in...
For example, consider that an array of N elements have to be randomized such that the sum of all elements equal some value. An array reduction operator can be used with thewithclause such that it iterates over each element of the array and include it in the constraint solver. ...
一种蛮力的方法是填充一个数组，每个值显示每个元素权重的次数。