- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add implementations of acoshl(), asinhl(), and atanhl(). This is a
merge of the work done by bde and myself.

ld80 and ld128 implementations of expm1l(). This code started life
as a fairly faithful implementation of the algorithm found in

PTP Tang, "Table-driven implementation of the Expm1 function
in IEEE floating-point arithmetic," ACM Trans. Math. Soft., 18,
211-222 (1992).

Over the last 18-24 months, the code has under gone significant
optimization and testing.

Reviewed by: bde
Obtained from: bde (most of the optimizations)

Add logl, log2l, log10l, and log1pl.

Submitted by: bde

I'm happy to finally commit stephen@'s implementations of cacos,
cacosh, casin, casinh, catan, and catanh. Thanks to stephen@ and bde@
for working on these.

Submitted by: stephen@
Reviewed by: bde

mdoc: avoid nested displays.

Minor mdoc fix.

Compute the exponential of x for Intel 80-bit format and IEEE 128-bit
format. These implementations are based on

PTP Tang, "Table-driven implementation of the exponential function
in IEEE floating-point arithmetic," ACM Trans. Math. Soft., 15,
144-157 (1989).

PR: standards/152415
Submitted by: kargl
Reviewed by: bde, das
Approved by: das (mentor)

General mdoc(7) and typo fixes.

PR: 167734
Submitted by: Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after: 3 days

mdoc: fix column names, indentation, column separation within each row, and
quotation. Also make sure we have the same amount of columns in each row as
the number of columns we specify in the head arguments.

Reviewed by: brueffer

Remove superfluous paragraph macro.

Minor corrections and clarifications regarding exceptions.

It's no longer accurate to say that math.h "constitute[s] the C math
library," since complex.h, tgmath.h, and fenv.h are also part of the
math library. Replace the outdated sentence with some references to
the other parts.

Add c{cos,sin,tan}{,h}{,f} functions. This is joint work with
bde and kargl.

- change "is is" to "is" or "it is"
- change "the the" to "the"

Approved by: lstewart
Approved by: sahil (mentor)
MFC after: 3 days

Implement the long double version for the cube root function, cbrtl.
The algorithm uses Newton's iterations with a crude estimate of the
cube root to converge to a result.

Reviewed by: bde
Approved by: das

Add cexp() to the complex(3) manpage. Thanks to bde for pointing out
that I missed this.

Add cexp() and cexpf().

Reviewed by: bde (earlier version)

Add complex(3) manual page documenting our partial support for C99
complex arithmetic in libm.

Reviewed by: David Schultz <das@FreeBSD.org>
MFC after: 2 weeks

Fix various nits in style and comments that were pointed out by bde.
Code changes verified with md5.

Add log2() and log2f().

Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while
translating these manual pages. Minor corrections by me.

Submitted by: Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>

mdoc: spell out theta, the Unicode glyph is hard to read for terminal fonts

It is referred to as "theta" later in the document anyway,
so stop being fancy.

mdoc: spell macros correctly, there's no need for the backslash escape

mdoc: Garbage collect unused/unneeded macros

mdoc: move remaining sections into consistent order

This pertains mostly to FILES, HISTORY, EXIT STATUS and AUTHORS sections.

Found by: mdocml lint run
Reviewed by: ru

mdoc: move CAVEATS, BUGS and SECURITY CONSIDERATIONS sections to the
bottom of the manpages and order them consistently.

GNU groff doesn't care about the ordering, and doesn't even mention
CAVEATS and SECURITY CONSIDERATIONS as common sections and where to put
them.

Found by: mdocml lint run
Reviewed by: ru

Fix several typos in macros or macro misusage.

Found by: make manlint
Reviewed by: ru
Approved by: philip (mentor)

Implement cproj{,f,l}().

Add implementations of acosl(), asinl(), atanl(), atan2l(),
and cargl().

Reviewed by: bde
sparc64 testing resources from: remko

Fix a typo in the cosl() prototype.

Implement fmodl.
Document fmodl and fix some errors in the fmod manpage.

Hook remquol() and remainderl() up to the build.

Implement csqrtl().

Document hypotl().

Submitted by: Steve Kargl <sgk@troutmask.apl.washington.edu>

Hook up sqrtl() to the build.

Document return values better.

Add tgammaf() as a simple wrapper around tgamma().

Documentation for sinl(), cosl(), and tanl().

Introduce a new log(3) manpage and move the relevant functions there.
Document exp2l() in exp(3), and remove the quaint discussion of topics
such as what these functions were called on the HP-71B's variant of
BASIC.

Implement rintl(), nearbyintl(), lrintl(), and llrintl().
Thanks to bde@ for feedback and testing of rintl().

Add logbl(3) to libm.

Document the fact that we have nan(3) now, and make some minor clarifications
in other places.

Implement and document nan(), nanf(), and nanl(). This commit
adds two new directories in msun: ld80 and ld128. These are for
long double functions specific to the 80-bit long double format
used on x86-derived architectures, and the 128-bit format used on
sparc64, respectively.

Implement and document csqrt(3) and csqrtf(3).

Update the standards section, and make a minor clarification about the
return value of sqrt.

s/C90/C99/

Add a "STANDARDS" section.

Implement carg(3) and cargf(3).

Rotting in an old src tree since: March 2005

Remove California Regent's clause 3, per letter

Fix a cut-and-paste-o.

Remove a note pertaining to the Alpha.

s/5.5/6.0/ in HISTORY section.

Discussed with: ru

-mdoc sweep.

The logb() functions are not just ieee754 "test" functions, but are
standard in C99 and POSIX.1-2001+. They are also not deprecated, since
apart from being standard they can handle special args slightly better
than the ilogb() functions.

Move their documentation to ilogb.3. Try to use consistent and improved
wording for both sets of functions. All of ieee854, C99 and POSIX
have better wording and more details for special args.

Add history for the logb() functions and ilogbl(). Fix history for
ilogb().

Fixed spelling of remquof() in its prototype.

Markup nit.

Approved by: re (blanket)

Fixed compile warning.

Approved by: re (blanket)

Assorted markup fixes.

Approved by: re

Implement truncl() based on floorl().

Add roundl(), lroundl(), and llroundl().

Document exp2() and exp2f(), and make other minor tweaks and updates.

Implement and document remquo() and remquof().

Document feenableexcept(), fedisableexcept(), and fegetexcept().

Replace fegetmask() and fesetmask() with feenableexcept(),
fedisableexcept(), and fegetexcept(). These two sets of routines
provide the same functionality. I implemented the former as an
undocumented internal interface to make the regression test easier to
write. However, fe(enable|disable|get)except() is already part of
glibc, and I would like to avoid gratuitous differences. The only
major flaw in the glibc API is that there's no good way to report
errors on processors that don't support all the unmasked exceptions.

Document scalbnl and scalblnl.

Document nextafterl and nexttoward{,f,l}.

Add nexttoward to the list of implemented functions, and explicitly
list the four that are still missing.

Document fmal.

Fix a mistake in the exponent range.

Un-document the non-extant exp10() and exp10f() functions.
exp10() was a casualty of the transition away from the VAX.

Typo.

Properly terminate sentence.

- Move the functions presently described in in ieee(3) to their own
manpages. They are not very related, so separating them makes it
easier to add meaningful cross-references and extend some of the
descriptions.
- Move the part of math(3) that discusses IEEE 754 to the ieee(3)
manpage.

Many changes, including the following major ones:
- Rearrange the list of functions into categories.
- Remove the ulps column. It was appropriate for only some
of the functions in the list, and correct for even fewer
of them.
- Add some new paragraphs, and remove some old ones about
NaNs that may do more harm than good.
- Document precisions other than double-precision.

Add fma() and fmaf(), which implement a fused multiply-add operation.

Sort sections.

Use the \*(If string provided by mdoc(7), to represent infinity.

Removed redundant .br call.

Remove numerous references to VAX floating-point and the setting of
errno, replacing them with a discussion of IEEE exceptions where
appropriate. Cross-reference fenv(3) whenever exceptions are
mentioned.

Tiny markup nits.

Fixed too many of "the", and enclose multi-word argument in double quotes.

Obtained from: ru

Markup nits.

Fixed too many of "the", and enclose multi-word argument in double quotes.

Implement and document ceill().

Bump .Dd for the last commit.

Hook up and document floorl().

Document [l]lrint[f]() and [l]lround[f]().

Scheduled mdoc(7) sweep.

Sanitize the markup, as prompted.

More updates for math(3):
- Make some minor rearrangements in the introduction.
- Mention the problem with argument reduction on i386.
- Add recently-implemented functions to the table.
- Un-document the error bounds that only apply to the old 4BSD math
library, and fill in the correct values where I know them. No
attempt has been made to document bounds lower than 1 ulp, although
smaller bounds are usually achievable in round-to-nearest mode.

Add and document ilogbl(), a long double version of ilogb().

Add man pages for the cimag(), conj() and creal() functions.

Fix two bugs in the signbit() macro, which was implemented last year:

- It was added to libc instead of libm. Hopefully no programs rely
on this mistake.

- It didn't work properly on large long doubles because its argument
was converted to type double, resulting in undefined behavior.

Add C99's nearbyint{,f}() functions as wrappers around rint().
These trivial implementations are about 25 times slower than
rint{,f}() on x86 due to the FP environment save/restore.
They should eventually be redone in terms of fegetround() and
bit fiddling.

Eliminate double whitespace.

Mechanically kill hard sentence breaks.

Markup, grammar, punctuation.

Implement and document fdim{,f,l}, fmax{,f,l}, and fmin{,f,l}.

Uncomment some functions that we now support.

Cross-reference round(3) and trunc(3) as appropriate.

Implement trunc() and truncf().

Add trivial implementations of scalbln() and scalblnf().
These routines are specified in C99 for the sake of
architectures where an int isn't big enough to represent
the full range of floating-point exponents. However,
even the 128-bit long double format has an exponent smaller
than 15 bits, so for all practical purposes, scalbln() and
scalblnf() are aliases for scalbn() and scalbnf(), respectively.

Document ilogb()'s return values in terms of the FP_ILOGB* macros.

Memory's free, but all the world ain't a VAX anymore. Bring math.3
kicking and screaming into the 1980's. This change converts most of
the markup from man(7) to mdoc(7) format, and I believe it removes or
updates everything that was flat out wrong. However, much work is
still needed to sanitize the markup, improve coverage, and reduce
overlap with other manpages. Some of the sections would better belong
in a philosophy_of_w_kahan.3 manpage, but they are informative and
remain at least as reminders of topics to cover.

Reviewed by: doc@, trhodes@

The references to scalbn and scalbnf should be scalb and scalbf.
(The former are actually useful, and ieee_test(3) only documents
functions that aren't.) Add a sentence describing the domain of
scalb() and scalbf().

Add round(3) and roundf(3) and the associated documentation.

PR: 59797
Submitted by: "Steven G. Kargl" <kargl@troutmask.apl.washington.edu>
Reviewed by: bde (earlier version, last year)

Add documentation for:
- fenv(3)
- feclearexcept(3), fegetexceptflag(3), feraiseexcept(3),
fesetexceptflag(3), fetestexcept(3)
- fegetround(3), fesetround(3)
- fegetenv(3), feholdexcept(3), fesetenv(3), feupdateenv(3)

Reviewed by: standards@

Add an implementation of copysignl(), a long double version of copysign().

Approved by: das (mentor)

The prototypes for cabs() and cabsf() are in <complex.h>. Fix their arguments'
types and describe them briefly.

Reviewed by: ru, bde
Approved by: das (mentor)

Document fabsl(3).

Submitted by: Stefan Farfeleder <stefan@fafoe.narf.at>

mdoc(7) police: Nits.

- gamma_r, lgamma_r, gammaf_r, and lgammaf_r were protected by _REENTRANT
in math.h; the consensus here was that __BSD_VISIBLE was correct instead.

- gamma_r, lgamma_r, gammaf_r, and lgammaf_r had no documentation in the
lgamma(3) manpage.

Reviewed by: standards@
Submitted by: Ben Mesander

english(4) police.

Resurrect Lite1's gamma() as C99's tgamma(). Minimal changes.

Fixed some bugs in the description of plain gamma() (and gammaf()).
Give a more detailed and correct history of when gamma() was actually
the gamma function.

Grammar nit.

mdoc(7) police: fixed bugs from rev. 1.15.

gamma(x) actually returns \log(|\Gamma(x)|), so correct the man
page and add an historical note explaining this. This patch is
based on Stephen's.

We still need someone to implement tgamma.

PR: 28972, 31764
Submitted by: Stephen Montgomery-Smith <stephen@math.missouri.edu>

Match parenthesis and don't give names to return values.

PR: 31214

Fixed missing quoting of >= (in ceil.3) and <= (in floor.3) by reverting to
describing these operators in English. This completes the fix in rev.1.3
(rev.1.2 got this wrong by describing wrong operators in English).

Fixed bitrot and improved English in the DESCRIPTION section.

Fixed missing quoting of [-1, +1].

Submitted by: phantom

Use ".Lb libm" where it will have an effect (not just in the zombie man
pages in libm).

Submitted by: phantom

Removed .Nm's for the nonexistent functions exp2() and exp2f().

mdoc(7) police: Use the new .In macro for #include statements.

mdoc(7) police: join split punctuation to macro calls.

Tiny markup fix: `to' isn't a variable

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: normalize .Nd.

.St -ansiC -> .St -isoC

mdoc(7) police: Change -filled displays (which just happen
to be the same as -ragged in the current implementation) to
-ragged. With mdocNG, -filled displays produce the correct
output, formatted and justified to both margins.

mdoc(7) police: split punctuation characters + misc fixes.

Prepare for mdoc(7)NG.

mdoc(7) police: use canonical form of .Dd macro.

mdoc(7) police: Er macro usage cleanup.

mdoc(7) police: Nm -> Fn where appropriate.

Remove more single-space hard sentence breaks.

Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.

style fix

PR: docs/14737
Submitted by: Norihiro Kumagai <kuma@nk.rim.or.jp>

$Id$ -> $FreeBSD$

Document the fpgetprec/fpsetprec functions in their man page.
Add cross-references to the elusive fpsetmask() function to various other
man pages.
Reviewed by: bde

PR: 5489
Submitted by: Steve G. Kargl <kargl@troutmask.apl.washington.edu>
Repair corrupted text.

Fixed minor bugs related to the addition of gammaf.

The major bug, that gamma is documented as really being gamma, is
still unfixed.

Fixed synopsis. Some float functions claimed to have the same name as
the double version.

Revert $FreeBSD$ to $Id$

Sort cross references.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

comma typos

Removed references to nonexistent functions log2() and log2f().

Fix up the NAME lines forthe ceil and floor man pages to be
less confusing.

Reviewed by: bde
Partially obtained from: NetBSD-bugs

Fixed some minor formatting problems to silence manck some more.
Corrected some bogus cross references to man pages that we don't/won't
have and either deleted them, or found a more appropriate man page
that we do have. Various other minor changes to silence manck.

Manck is currently down to about 200 lines of errors, down from
the 500 - 600+ when I started all this.

Fixed use of too many args for `.Em'.
Fixed description of domain of y*().
Fixed description of error domain. (This description is still half
redundant and half wrong, as in many other math man pages. fdlibm
doesn't support the VAX or Tahoe.)
Fixed capitalization of `Bessel'.

Additions from Thomas Graichen to mention each functions' floating point
counterpart.
Submitted by: Thomas Graichen <graichen@sirius.physik.fu-berlin.de>

This commit was generated by cvs2svn to compensate for changes in r2116,
which included commits to RCS files with non-trunk default branches.