[ns] A confusing question about vegas.cc code?

[CWen56 <n2688420@dec4000.cc.ncku.edu.tw>]

Hi!
    I am quite interested in vegas algorithm and having a further reasearch now.
While I survey the sourec code of vegas.cc I found something strange. On the
calculation of delta = int ((expect-vactual_)*v_baseRTT_ + 0.5), why constant
0.5 should be added? May someone tell me how this determination come from which
paper? I didn't find this constant added in several papers about vegas
discussion.

Thanks in advance
Best Regard

--

Robert Chung-Wen Ma
Postgraduate Student
ATM Lab. Dept. of EE, NCKU
1. University Rd., 70101
Tainan, Taiwan

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