cumulative sum

Hi,
Is there any function to calculate cumulative sum of variable. I would like
to avoid the following loop.

; loop to compute cumulative sum of number of days
tm=new(dimsizes(month),"integer")
a=0
do i=0,nmonth-1
    tm(i)=month(i)+a
    a=tm(i)
end do

Thanks,
Siji

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Received on Thu Feb 15 2007 - 01:39:56 MST