Re: [Valgrind-users] mysterious failures when using valgrind

[Peter v. H. <p.v...@om...>]

Hi John,

>> When run directly, the output is
>>
>> 3fbc79ca10c9242235d511e976394d7a
>>
>> When run through valgrind, the output is:
>
>> 3fbc79ca10c9240e12445f2000000000
>
> This has been entered as bug  https://bugs.kde.org/show_bug.cgi?id=325328 .
> The likely cause is __float128 operations being performed as "double precision"
> of two __float80 by the Intel math library for x86_64.  Memcheck-3.8.1 implements
> __float80 operations as __float64 (ordinary IEEE-754 'double'.)
>

Thanks for analyzing this! I assume this means that a fix will be rather 
complex?


Peter.

-- 
Peter van Hoof
Royal Observatory of Belgium
Ringlaan 3
1180 Brussel
Belgium
http://homepage.oma.be/pvh