<bits/features.h> setting of __STDC_IEC_559__ not universally accurate

[Ulrich Drepper]

Mark Mitchell wrote:
> At present, <bits/features.h> unconditionally sets __STDC_IEC_559__ to
> 1.  This is not accurate on (at least) ARM platforms using software
> floating-point.  On those platforms, <fenv.h> does not define
> FE_INEXACT, and friends, because the software floating-point emulation
> provided by libgcc does not honor those rounding modes.  According to
> the C99 standard, that would seem to preclude setting __STDC_IEC_559__.

The interface glibc provides requires this.  If the broken arm runtime
cannot handle it, fix it.

--
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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