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Date:	Sun, 07 Sep 2003 20:11:04 +0100
From:	Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To:	DJGPP workers <djgpp-workers AT delorie DOT com>
Subject:	Integrating K. B. Williams's maths functions
Reply-To:	djgpp-workers AT delorie DOT com

Hello.

I've put a work-in-progress patch here:

    http://www.phekda.freeserve.co.uk/richdawe/kbw-maths-20030907.diff.gz

It's half a megabyte uncompressed. I didn't think there was much point posting
it to djgpp-workers. I have no idea if it works. It compiles, at least.

You can find some notes I made here:

    http://www.phekda.freeserve.co.uk/richdawe/kbw-maths-notes.txt

They're below for convenience.

K. B. Williams: I have a couple of questions:

* Could you send me a ZIP of your latest documentation for these functions,
please?

* Where are xexp2, xexp1m defined?

Thanks, bye, Rich =]

Integration of K. B. Williams's new math functions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* C99 header guards.
- Merging math.h manually piece-wise (function by function), so OK.

* fpclassifyl, isfinitel, isinfl, isnanl not integrated.
- Use MartinS's instead.

* nanl - go via a __dj_* like nan we added for C99?
- Need to add nan*(const char *) functions. Simple wrappers
  that invoke strto*.

* float.h: Don't put the new constants there, since they're not defined
  in C99. Put them in a private header instead in src/libc/c99/math.

* tests/libclink: Missing checks for C99 functions? modfl

* signgaml should be prefixed with underscores, so it doesn't pollute
  the namespace.

* Fix tgen builds: gcbrtvec.cpp, gexpm1vec.cpp.
- Where is xexpm1 defined?

* Fix tgen builds: gcosvec.cpp, gexpvec.cpp, gsinvec.cpp.
- Where is xexp2 defined?
- Other x* functions appear to be missing too.

* Fix tgen builds: gtanhvec.cpp.
- _nanf.

* math.h, libm/math.h - Finish integrating KBW's diffs. How to make
  libm/math.h just a shell without any fdlibm pollution?
- Sort out fdlibm.h & math.h clashes properly.

Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk> 2003-09-07

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

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