Analysis results differ with different versions of g77 compilers?

[Eljay Love-Jensen]

Hi Yuan,

I'm not 100% sure, but my guess would be that one or both programs were not 
compiled with strict IEEE 754 compliance enabled.

Without strict compliance, the compiler is at liberty to take advantage of 
optimizations which may result in twitchy differences in least significant 
digits of floating point numbers.

--Eljay