IEEE inexact-flag not working on the Alpha (despite -mieee-with-inexact)?

Andreas Schwab schwab@suse.de
Thu Sep 18 17:18:00 GMT 2008


Roberto Bagnara <bagnara@cs.unipr.it> writes:

> $ cat sf.cc
> #include <fenv.h>
> #include <cstdio>
>
> int main() {
>   float x = 2;
>   float y = 3;
>   feclearexcept(FE_INEXACT);
>   x = x / y;
>   printf("%d %.1000g\n", fetestexcept(FE_INEXACT) != 0, x);

You need to enable the FENV_ACCESS pragma (which is not yet implemented)
to get defined behaviour.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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