GCC options and floating-point correctness (benchmarks)

[Joost VandeVondele]

Using the fortran version of the paranoia test :
http://www.netlib.org/paranoia/

xlf -qfloat=nomaf:rndsngl -qstrict -O3 dpara.f
 No failures, defects nor flaws have been discovered.
 Rounding appears to conform to the proposed IEEE standard  P754
 The arithmetic diagnosed appears to be Excellent!
 End of Test.

f95 -ieee=full dpara.f
 The number of  FLAWs  discovered =              1
 The arithmetic diagnosed seems Satisfactory though flawed.
 End of Test.
(flaw -0.0**0 -> NaN)

Joost