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Re: Need a function to multiply the elements of an array [message #4052]

Thu, 27 April 1995 00:00

barsam
Messages: 2
Registered: April 1995

Junior Member

In article <3nm2uk$qqq@pinot.umd.edu>,
I wrote:
>
> Hi,
>
> I am looking for a routine to multiply the elements of an array.
> Is there a faster way of doing it than the following?
>
>
> function prod, x
> n = n_elements(x)-1
> z = 1.d0
> for i = 0, n do z = z * x(i)
> return, z
> end
>
>
>
> BM
>

Thanks for the replies.

z = exp(total(alog(x))) gives me about 60% savings. Not terribly
fast but obviously better than the "for" loop.

BM

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[Message index]

		Re: Need a function to multiply the elements of an array By: barsam on Thu, 27 April 1995 00:00
		Re: Need a function to multiply the elements of an array By: adorf on Thu, 27 April 1995 00:00
		Re: Need a function to multiply the elements of an array By: dan on Wed, 26 April 1995 00:00

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