Useful function declarations

[Jeff Johnston]

Shaun Jackman wrote:
>>Ok.  Are you willing to put together a patch?  My preference would be a
>>symbol that is unlikely to be used by something else like gcc (e.g..
>>prefix with __newlib_).  If optional, it should be put in the newlib.h
>>header file.
> 
> 
> I'd be happy to put the patch together. I'd already started doing this
> using __ARM_ARCH_4T__ -- just because the symbol was handy -- so I'll
> just fix up the patch to use a more appropriate symbol. My inclination
> is to use __newilb_susv3.
>

Sounds reasonable with typo fixed :)

> Cheers,
> Shaun