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Re: 'loop limit expression too large for loop variable type' error [message #72322 is a reply to message #72319]

Mon, 30 August 2010 08:47

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

On Aug 30, 12:36 pm, Snow53 <jennifer_wa...@hotmail.com> wrote:
> My code runs great on small data sets, but I'm trying to use it for
> larger sets and I've started getting an
> ''loop limit expression too large for loop variable type' error when I
> reach the "for j=0, num_ids-1 do begin". Why is this happening and
> how can I fix it?

It appears that num_ids is 2^16 or larger, which would overflow the
loop variable initialized with the type int. Use instead

for j=0L, num_ids-1

Or add at the beginning

compile_opt idl2

or compile_opt defint32

Assuming it would fit into a long (2^32).

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[Message index]

		Re: 'loop limit expression too large for loop variable type' error By: Jeremy Bailin on Mon, 30 August 2010 09:56
		Re: 'loop limit expression too large for loop variable type' error By: Snow53 on Mon, 30 August 2010 08:57
		Re: 'loop limit expression too large for loop variable type' error By: chris_torrence@NOSPAM on Mon, 30 August 2010 08:58
		Re: 'loop limit expression too large for loop variable type' error By: penteado on Mon, 30 August 2010 08:47
		Re: 'loop limit expression too large for loop variable type' error By: Snow53 on Mon, 30 August 2010 08:43
		Re: 'loop limit expression too large for loop variable type' error By: pgrigis on Tue, 31 August 2010 14:27

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