[Numpy-discussion] Array printing and another question
Hans Meine
meine at informatik.uni-hamburg.de
Wed Apr 9 04:26:57 EDT 2008
Am Dienstag, 08. April 2008 17:22:33 schrieb Ken Basye:
> I've had this happen
> often enough that I found the first thing I did when an output
> difference arose was to print the FP in hex to see if the
> difference was "real" or just a formatting artifact.
Nice idea - is that code available somewhere / could you post it?
As a side note, there is a second big source of bug-like experiences with the
x86 architecture: floating point values are represented with a higher
precision inside the FPU (e.g. 80 bits instead of 64), but that probably only
matters for compiled programs where the compiler may (or may not) optimize
intermediate, truncating FPU->memory operations away (which leads to
differing results and is one of the most often reported "bugs" of the GCC
optimizer).
--
Ciao, / /
/--/
/ / ANS
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