[SAC-HELP] Double Precision

[Peter Goldstein]

One approach that might allow for a quick test would be to redefine 
the float type to be the same as a double and then go in and find the 
places were offsets are hardwired in bytes, e.g., some of the include 
files.  I'm not sure how long this would take and I may be forgetting 
something fundamental about sac that would preclude this.

Cheers,

Peter


At 11:41 AM 11/28/2007, Tim Ahern wrote:
>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
>
>
>_______________________________________________
>sac-help mailing list
>sac-help at iris.washington.edu
>http://www.iris.washington.edu/mailman/listinfo/sac-help