How to get rid of from this error,"cannot reach tolerance because of roundoff error"

ROOT
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correlated.cpp (4.6 KB)

Can any one please help me , how can I get rid of from this error while I generate particle using random number and function. Any suggestion will be helpful. Code is attached here.

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Change all “float” into “double” and all “Float_t” into “Double_t”.

You may also switch from using “THxF” to using “THxD”, but it doesn’t seem to be “mandatory” here.

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Thank you so much. your suggestion works.