- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in printf, don't round to double anymore
- implement extended-precision versions of libc functions: fpclassify,
isnan, isinf, signbit, isnormal, isfinite, now that the ieee.h is
fixed
- separate vax versions of strtof, and __hdtoa
- add complex math support.  added functions: cacos, casin, catan,
ccos, csin, ctan, cacosh, casinh, catanh, ccosh, csinh, ctanh, cexp,
clog, cabs, cpow, csqrt, carg, cimag, conj, cproj, creal, cacosf,
casinf, catanf, ccosf, csinf, ctanf, cacoshf, casinhf, catanhf,
ccoshf, csinhf, ctanhf, cexpf, clogf, cabsf, cpowf, csqrtf, cargf,
cimagf, conjf, cprojf, crealf
- add fdim, fmax, fmin
- add log2. (adapted implementation e_log.c.  could be more acruate
& faster, but it's good enough for now)
- remove wrappers & cruft in libm, supposed to work-around mistakes
in SVID, etc.;  use ieee versions.  fixes issues in python 2.6 for
djm@
- make _digittoint static
- proper definitions for i386, and amd64 in ieee.h
- sh, powerpc don't really have extended-precision
- add missing definitions for mips64 (quad), m{6,8}k (96-bit) float.h
for LDBL_*
- merge lead to frac for m{6,8}k, for gdtoa to work properly
- add FRAC*BITS & EXT_TO_ARRAY32 definitions in ieee.h, for hdtoa&ldtoa
to use
- add EXT_IMPLICIT_NBIT definition, which indicates implicit
normalization bit
- add regression tests for libc: fpclassify and printf
- arith.h & gd_qnan.h definitions
- update ieee.h: hppa doesn't have quad-precision, hppa64 does
- add missing prototypes to gdtoaimp
- on 64-bit platforms make sure gdtoa doesn't use a long when it
really wants an int
- etc., what i may have forgotten...
- bump libm major, due to removed&changed symbols
- no libc bump, since this is riding on djm's libc major crank from
a day ago
discussed with / requested by / testing theo, sthen@, djm@, jsg@,
merdely@, jsing@, tedu@, brad@, jakemsr@, and others.
looks good to millert@
parts of the diff ok kettenis@
this commit does not include:
- man page changes

- add C99 real-floating macros fpclassify isfinite isinf isnan
isnormal signbit
- add C99 macros isgreater isgreaterequal isless islessequal
islessgreater isunordered
- add function prototypes, __fpclassify __fpclassifyf __fpclassifyl
__isfinite __isfinitef __isfinitel __isinf __isinfl __isnan __isnanl
__isnormal __isnormalf __isnormall __signbit __signbitf __signbitl
ok millert@

FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_ILOGB0, FP_ILOGBNAN definitions,
per C99
- classify functions into sections, add missing definitions, add
and some '#if 0' functions, and long double definitions, so we see
what's needed to be done
- other stuff is XXX'd, and will be uncommented soon
ok millert@

- math.h shouldn't define FLT_EVAL_METHOD, but float.h should (per
C99).  remove from math.h, and add proper definitions in float.h
ok millert@

returns integer value, so add missing prototype
ok millert@

By Steven G. Kargl <kargl at troutmask dot apl dot washington.edu>
From FreeBSD

in sys/cdefs.h) instead of _FOO_SOURCE.  Also fix several namespace
pollution issues, including the byte order defines.  OK deraadt@

jason@. Man page fixes by jmc@, prodding by jsg@. ok mickey@

okay millert@

to #ifndef __cplusplus.  It turns out there is code outside of libm
that wants to use this.  I suppose that's why it is in math.h instead
of math_private.h ;-)

`math.h'.  The one in libm is more up to date but the one in the
include dir is what gets installed.

entire trees for testing anyway, I might as well do this intrusive touching
of include files now.  Added openBSD tags.