[SAC-HELP] Double Precision

[Tim Ahern]

Greetings

We have a question for the SAC users group.  Recently a need to  
support double precision floating point for data in SEED format has  
been identified.
While SEED itself can support this, the problem comes with possible  
output formats the rdseed program should support.  The most widely used
format is SAC format in our estimation.

Our question is, is it possible for SAC to support double precision  
floating point values without loosing precision?  Would it be  
extremely difficult to
add double precision support for SAC?  Even if SAC can not support  
the format, would it make sense to have a double precision version of  
the SAC Format, if
you understand what I mean by that.

One further question is, assuming that SAC and SAC format are not  
ready for double precision and it would be difficult to support it...  
what new format do you think we might consider supporting as an  
output format for rdseed?  Do any of you have suggestions as to  
possible ways to deal with double precision floats as an output
format?

Thanks for any help you can provide us.

Cheers
Tim


Program Manager, IRIS Data Management System
IRIS DMC
1408 NE 45th Street #201
Seattle, WA  98105

(206)547-0393 x118
(206) 547-1093 FAX


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