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TOTAL(): was Declaration of variables in IDL [message #26948]

Wed, 03 October 2001 15:34

Wayne Landsman
Messages: 117
Registered: January 1997

Senior Member

Craig Markwardt wrote:

> The output of TOTAL is always a floating point type.

Unless, of course, one supplies the /DOUBLE keyword to TOTAL()...

I mention this because at least a couple of times (e.g. when doing checksums) I
have wished that TOTAL() also had a /L64 keyword. For example, according to
MACHAR() on my Solaris machine, one loses precision with TOTAL() when totaling
an integer array that sums to more than 2^53, but with a L64 output, one could
sum up to 2^64-1 without losing any precision.

--Wayne Landsman landsman@mpb.gsfc.nasa.gov

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TOTAL(): was Declaration of variables in IDL

By: Wayne Landsman on Wed, 03 October 2001 15:34

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