search for: randcal

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2002 Jan 24
2
random number generation issues with r and compiled C code
...all GetRNGstate() once before generating all random numbers necessary and then call it again when I have finished calling all the random variates? Or does it not matter that much? Also, is scoping a problem here? I have not tried this yet, but suppose I was to do as follows foo() { GetRNGstate(); randcall(); randcall(); PutRNGetate(); } where randcall() { int i; for(i=0; i < 100; i++) cout << unif_rand(); } would this be Ok, or do calls to GetRNGstate() and PutRNGetate() have to be inside randcall()? If this is the case, then the above strategy of reading in seed as early as possible a...