Provide assembly version of sqrtl(3).

ok pirofti@

Provide assembly version of sqrtl(3).

ok otto@

Add man pages for the fdim/fmin/fmax family of functions and make sure fdiml
is defined on all architectures.

ok jmc@ (man pages) and martynas@

document log2() and log2f(); from thomas pfaff
ok otto millert martynas

ieee, and ieeef aren't real, and the amount of functions it documents
is getting ridiculous. split them into groups of copysign, ilogb,
nextafter, scalbn. discussed long ago with millert@

document scalbln, scalblnf, scalblnl

int is big enough to fully represent exponents of all supported fp
formats. which even for 80-bit & 128-bit long doubles is only 15
bits. therefore, scalbln, scalblnf, scalblnl are essentially the

int is big enough to fully represent exponents of all supported fp
formats. which even for 80-bit & 128-bit long doubles is only 15
bits. therefore, scalbln, scalblnf, scalblnl are essentially the
same as scalbn, scalbnf, scalbnl with bounds checking so that
LONG_MIN..INT_MIN, and INT_MAX..LONG_MAX ranges properly raise
exceptions & yield correct values. looks good to millert@

show more ...

round, roundf, trunc, truncf for hppa; ok kettenis@

make ldexpf behavior consistent with the double and extended-precision
versions; spotted by kettenis@
while here also remove unused ldexp; it lives in libc
ok kettenis@, "looks good" millert@

lrint, llrint, lrintf, llrintf for amd64. ok kettenis@, oga@

implement and use sqrt, sqrtf & fabsf in hardware; since it's
faster that way. tested by myself. discussed w/ & ok miod@, millert@

add C99-conformant nan, nanf, nanl for vax. always return zero,
since its fp does not have distinguished values for qnans. tested
by naddy@; fixes libnova. ok theo

space

document and mlink long double functions. ok jmc@

pass CPPFLAGS+= -D__STDC__ for vax, to get the right definitions
from asm.h. discussed w/ millert@

- 80-bit and quad precision trigonometric and other most
important functions: acosl, asinl, atanl, atan2l, cosl,
sinl, tanl, exp2l, frexpl, ilogbl, ldexpl, logbl, scalbnl,
fabsl, hypotl, powl, sqrtl,

- 80-bit and quad precision trigonometric and other most
important functions: acosl, asinl, atanl, atan2l, cosl,
sinl, tanl, exp2l, frexpl, ilogbl, ldexpl, logbl, scalbnl,
fabsl, hypotl, powl, sqrtl, rintl, copysignl, nanl, fdiml,
fmaxl, fminl. mostly taken from freebsd, needed alot of
changes to adapt. note, these are all c versions; and are
quite slow when architectures have, e.g. sqrt. assembly
versions will be added afterwards
- make them .weak/__weak_alias to the double precision
versions on other archs
- no need to have two finites. finite() and finitef() are
non-standard 3BSD obsolete versions of isfinite. remove
from libm. make them weak_alias in libc to __isfinite and
__isfinitef instead. similarly make 3BSD obsolete versions
of isinf, isinff, isnan, isnanf weak_aliases to C99's
__isinf, __isinff, __isnan, __isnanf
- remove unused infinity.c. the c library has infinities
for each supported platform
- use STRICT_ASSIGN cast hack for _kernel_rem_pio2, so that
the double version has a chance of working on i386 with
extra precision
- avoid storing multiple copies of the pi/2 array, since
it won't vary
- bump major due to removed finite/finitef. although they
will be in libc, which anything is linked to, minor bump
might be enough
ok millert@. tested by sthen@, jsg@, ajacoutot@, kili@, naddy@

show more ...

- noieee_src: adapt complex versions of the functions it already
supports (which is all, except the float ones)
ok millert@

gc unused files, the functions are in libc. ok millert@

since these got no ieee-specific code anymore, add fmin, fmax, fdim,
fminf, fmaxf, fdimf, fdiml for VAX. looks good to millert@

sigh, gamma got lost

- replace dtoa w/ David's gdtoa, version 2008-03-15
- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in pri

- replace dtoa w/ David's gdtoa, version 2008-03-15
- 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

show more ...

various markup/grammar fixes for previous, and a missing MLINK
for remquof.3;

- add man pages for nan and remainder, from freebsd
- mlink drem, dremf, remainderf to remainder; nanf to nan
- describe that drem and dremf are obsolete aliases
- remove descriptions for remainder

- add man pages for nan and remainder, from freebsd
- mlink drem, dremf, remainderf to remainder; nanf to nan
- describe that drem and dremf are obsolete aliases
- remove descriptions for remainder and remainderf from ieee
looked over by jmc@, but it's easier for him to work on when they
are in tree

show more ...

describe exp2, exp2f and mlink them

remove finite from ieee.3, and unmlink from makefile