Why does my rand function not seem to work?
显示 更早的评论
limit = 0.3266;
s = 0;
counter = 0;
while 1
tmp = rand;
disp(tmp)
if tmp == limit
break
end
counter = counter + 1;
end
disp(counter);
Using tmp > limit, returns a value for counter, but if i did tmp == limit, it seems to go into an endless loop. First I thought the number 0.3266 had not been found until i wrote each randomly generated number to a file and later checked to discover that there's been more than 100 occurences of 0.3266 in about 5million counters, but the loop doesn't stop, Please is there something I'm doing wrong?
2 个评论
Jorge Mario Guerra González
2019-3-4
编辑：Jorge Mario Guerra González
2019-3-4
Because you are storing and displaying the numbers with only some decimals, there are more didigts, it would be weird if they match.
If you really want to do that operation, you should cast that random value to an int or something.
Jeremiah Abimbola
2019-3-4
采纳的回答
Torsten
2019-3-4
1 个投票
You will never hit 0.3266 exactly using the "rand" command.
You can use
if abs(tmp-limit) < 1e-6
or something similar in your code instead of
if tmp == limit
Best wishes
Torsten.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
