[PATCH] add base fenv and spu fenv support

[Patrick Mansfield]

On Wed, Feb 14, 2007 at 01:28:41PM -0500, Jeff Johnston wrote:
> 
> 1. Why are you using "../headers" in your C files when the C files and
>    "headers" subdirectory are in the same directory?

Mainly to avoid clutter, and because the code this came from (in IBM SDK
1.1) had this separation. Plus, I plan to submit more SPU optimized math
functions (based on additional and modified SPU SIMD math functions that
are in a separate package), pretty much one for every math function, so
one header and one C file for each math function.

Do you still want them moved?

> 2. There is an explicit copyright in sys/fenv.h but no license.

OK.

> 3. I do not see any real advantage to having the fenv.h in the
>    main include directory since it only declares std prototypes,
>    doesn't work for any platform but spu and has a documentation
>    clause.  At this time, it would be best to just place it in
>    machine/spu/include

OK.

-- Patrick Mansfield