Generating A Vector of Random Numbers
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I'm using DevC++ 4.9.9.2 on Windows XP. I want to generate a lot of random numbers all at once. I tried to do this by calling rand() repeatedly, but that doesn't work (I gather that it has something to do with the fact that the time hasn't changed much). I know that in Matlab, you can specify how many random numbers you wish to generate.
> I tried to do this by calling rand() repeatedly, but that doesn't work
> (I gather that it has something to do with the fact that the time
> hasn't changed much)
No, it is because you were doing it wrong! rand() is not dependant in any way on time. It is common to seed the RNG with a value derived from time by passing a time related value to srand(), but you only need to do that once. My guess is that you are doing it before every call to rand() in the loop - which is just dumb - and not random! ;-)
Clifford
I believe you can do that through GSL, the Gnu Scientific Library. There have been a number of discussions about using GSL in the pages of this forum.
Wayne