[comp.sys.sun] Fortran 64 bit.

ne201ph@prism.gatech.edu (Halvorson,Peter J) (05/26/90)

Has anyone had to port a Fortran program from a mainframe to a
SPARCstation?

The mainframe defaults to 64 bit numbers.  On the SPARC the same
statements and declarations produce 32 bit numbers.  For our current
program the extra precision of 64 bit real numbers is crucial.  Is there a
better way than going through the program line by line changing real to
real*8, and changing constants to constantd0 ( i.e. 1./3. to 1./3.d0)?
Constants are the bigger problem.

Peter Halvorson   --  Nuclear Engineering Program
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:     ...!{allegra,amd,hplabs,ut-ngp}!gatech!prism!ne201ph
Internet: ne201ph@prism.gatech.edu

ne201ph@prism.gatech.edu (Halvorson,Peter J) (05/31/90)

Thanks everyone, I guess my version of fortran is becoming obsolete.  The
correct answer is that version 1.3 of fortran has a command line switch to
do what I wanted ( the switch is -r8).

Peter Halvorson   --    Nuclear Engineering Program
Internet: ne201ph@prism.gatech.edu  --   peter@fission.gatech.edu