Paranoia freaks under SVS Fortran!
Jeffrey Bromberger
jeffrey at notvax.ccny.cuny.edu
Sat Mar 2 06:45:17 AEST 1991
Before porting over a large graphic library, I decided to run the single
precision paranoia suite to see how well it handles floating point numbers.
I compiled the program by modifying the IN and OUT units to be 0 (as
opposed to the real-world's 5 and 6), and used 'fortran' with no other
options. Well, here's what it found:
The number of SERIOUS DEFECTs discovered = 1
The number of DEFECTs discovered = 5
The number of FLAWs discovered = 2
The arithmetic diagnosed has unacceptable Serious Defects.
End of Test.
I deleted a lot of the output, showing the flaws (14 pages worth of it).
Has anyone else tried to use paranoia to see how flakey it is? I'm
going to try doing the double-precision fortran and the C versions and see
how they compare. Keep your ears open!
BTW: If anyone out there is interested, I'm using V2.2 (from sometime
in 1984). Anybody out there with LPIFortran want to try and run this for
comparison?
j
--
Jeffrey L. Bromberger
System Operator---City College of New York---Science Computing Facility
jeffrey at sci.ccny.cuny.edu jeffrey at ccnysci.BITNET
Anywhere!{cmcl2,philabs,phri}!ccnysci!jeffrey
More information about the Comp.sys.3b1
mailing list