[MPlayer-cvslog] r19207 - trunk/libmpdemux/freesdp/parser.c

[Michael Niedermayer]

Hi

On Sat, Jul 29, 2006 at 12:49:12AM -0400, Rich Felker wrote:
> On Thu, Jul 27, 2006 at 11:02:44PM +0200, diego wrote:
> > Author: diego
> > Date: Thu Jul 27 23:02:44 2006
> > New Revision: 19207
> > 
> > Modified:
> >    trunk/libmpdemux/freesdp/parser.c
> > 
> > Log:
> > The C99 function strtof is unavailable in some BSD variants.
> > patch by Jan Knutar, jknutar $@$ nic fi
> 
> IMO we should work out some sort of policy about this stuff. I can't
> imagine strtof being implemented anyway but as a call to strtold
> casting the result down to float.. Are there really platforms we
> support where float arithmetic is faster than double (or long double)
> arithmetic?
> 
> I heard at one time i387 arithmetic was faster in single precision
> mode but that the current ABI leaves the fpu in extended precision
> mode all the time regardless of operand size. Anyone know if this is
> true (or on which cpus)? If so it might be worthwhile to throw in some
> inline asm to switch the fpu mode for codecs and stuff that certainly
> don't need more than single precision.

IIRC only division and square root are affected by the precission thingy

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In the past you could go to a library and read, borrow or copy any book
Today you'd get arrested for mere telling someone where the library is