On Thu, Sep 20, 2001 at 10:37:39AM +0100, Phil Blundell wrote: > >Not sure. I suspect it's a glibc bug, as I found that modfl wasn't prototyped > >on arm. > > Right. Well, I'm not sure I'd class it as a bug: glibc just doesn't provide > long double math functions for ARM at the moment. And, in turn, the reason > for this is that GCC doesn't actually emit extended precision operations: > "long double" is equivalent to "double".
Does ANSI C99 say that it provides the long double maths functions? [even if sizeof(long double) == sizeof(double)] If yes, and if glibc is trying to give a full C99 implementation, then it's a glibc failing (or "bug"), isn't it? [even if all they'd are aliases to the double precision versions] > NWFPE does actually support extended precision if configured appropriately, > so > in theory one could turn on this support in GCC. But I suspect it would land > us in a nasty compatibility quagmire, and in fact Debian kernels tend to ship > with this NWFPE option disabled. "You are in a twisty maze of ABIs, all alike"? Alike, but not quite identical. :-( Nicholas Clark
