i386 floating point asm in mathinline.h (gcc related)

Ulrich Drepper drepper@cygnus.com
Tue Oct 19 09:28:00 GMT 1999


Andreas Jaeger <aj@suse.de> writes:

> Currently we use e.g.
>  __inline_mathop (log, "fldln2; fxch; fyl2x")
> which expands to (I simplified a little bit):
> 
> inline double log (double __x)
> {
>   register double __result;
>   __asm __volatile__ ("fldln2; fxch; fyl2x" : "=t" (__result) : "0" (__x))
>   return __result;
> }

This is not the latest version.  In the latest versio it is specified
that st(1) is clobbered.

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