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

2003-09-07:

* 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.
- Fixed, after work on 2003-09-28.

* 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.

2003-09-28:

* Ignore standard.results for now - we don't have a standard set
  of C99 FP functions yet!

* Code for: cosl, erfcl, y0l, y1l, ynl?

* Documentation for: jy0l, jy1l, jynl, nonesuchl, sinl, tanl?

* Integrated docs, except those for functions that have not been integrated.
- Changed portability info to "!ansi-c89, ansi-c99" from "ansi, posix".

* modfl not integrated.
- DJGPP already has modfl.

* mdnorm prototype in *.h inconsistent with the one in qsqrta.c.
- Is this a problem? Causes "make all" to fail in tests/cygnus/tgen/qfloat.

* Warnings in tests/cygnus/tgen/qfloat:

bash-2.04$ make
gcc  -Wall -march=pentium -O2 -c qexp2.c
gcc  -Wall -march=pentium -O2 -c qflt.c
qflt.c: In function `e113toq':
qflt.c:1771: warning: passing arg 1 of `qclear' from incompatible pointer type
qflt.c:1799: warning: assignment from incompatible pointer type
qflt.c:1820: warning: passing arg 1 of `shift' from incompatible pointer type
qflt.c:1823: warning: passing arg 1 of `normlz' from incompatible pointer type
qflt.c:1824: warning: passing arg 1 of `qclear' from incompatible pointer type
qflt.c:1828: warning: passing arg 1 of `qmov' from incompatible pointer type
ar -rs qfloatx.a qexp2.o qflt.o

* Need to integrate changes to tests/cygnus/tgen/makefile.

* Rename DblMath.[ch], FltMath.[ch], LdblTest.h to have lower-case names,
  to be consistent with other files in DJGPP CVS.

* keepthis.h? Build broken, until I have that file.

Richard Dawe <rich@phekda.freeserve.co.uk> 2003-09-28