How can I generate a single random number?

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Anish
Anish 2013-9-3
评论： Steven Lord 2020-3-27
I need to generate a single random number within my code. Is there a function to do this?

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Azzi Abdelmalek
Azzi Abdelmalek 2013-9-3
编辑：Azzi Abdelmalek 2013-9-3
rand % random number between 0 and 1
%or
randi(100) % integer random number between 1 and 100
  2 个评论
Samuel Katongole
Samuel Katongole 2020-3-27
That's is fine for the range 0 to 100; but how about with no range, say for, instance, from 0 to infinity?
Steven Lord
Steven Lord 2020-3-27
The maximum value you can store in double precision is realmax, which is about 1e307. So no, you can't generate double precision values greater than that (or you can, they just turn out to be Inf.)
>> x = 1e500
x =
Inf
Can you generate an arbitrary double precision number between 0 and realmax? There's no function in MATLAB to do so.
Can you share some details about what you're trying to do with these numbers "with no range"? There may be a way to do what you want that doesn't run into this problem of overflowing to Inf.

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