ieee floating point interrupt handling

[spelce at rogue.llnl.gov]

We just received several 4D35TG's and need to know how to get 
ieee interrupt handling enabled from Fortran codes. We just 
interested in enabling divide by zero, overflow, and "invlaid" 
exceptions. We'd also like to set underflow to zero ...

Any info to help first time a first time SGI user will be appreciated.

Tom Spelce
Lawrence Livermore National Lab
spelce at icdc.llnl.gov