| Commit message (Expand) | Author | Files | Lines |
|---|
| 2012-12-14 | fixed tgmath.h for functions with integral result•••in tgmath.h the return values are casted to the appropriate
floating-point type (if the compiler supports gcc __typeof__),
this is wrong in case of ilogb, lrint, llrint, lround, llround
which do not need such cast
| Szabolcs Nagy | 1 | -7/+9 |
| 2012-12-12 | math: add a non-dummy tgamma implementation•••uses the lanczos approximation method with the usual tweaks.
same parameters were selected as in boost and python.
(avoides some extra work and special casing found in boost
so the precision is not that good: measured error is <5ulp for
positive x and <10ulp for negative)
an alternative lgamma_r implementation is also given in the same
file which is simpler and smaller than the current one, but less
precise so it's ifdefed out for now.
| Szabolcs Nagy | 2 | -20/+215 |
| 2012-12-12 | math: cosh cleanup•••do fabs by hand, don't check for nan and inf separately
| Szabolcs Nagy | 3 | -70/+63 |
| 2012-12-12 | math: fix comment in __rem_pio2f.c | Szabolcs Nagy | 1 | -2/+2 |
| 2012-12-12 | math: add empty __invtrigl.s to i386 and x86_64•••__invtrigl is not needed when acosl, asinl, atanl have asm
implementations
| Szabolcs Nagy | 2 | -0/+0 |
| 2012-12-11 | math: clean up inverse trigonometric functions•••modifications:
* avoid unsigned->signed conversions
* removed various volatile hacks
* use FORCE_EVAL when evaluating only for side-effects
* factor out R() rational approximation instead of manual inline
* __invtrigl.h now only provides __invtrigl_R, __pio2_hi and __pio2_lo
* use 2*pio2_hi, 2*pio2_lo instead of pi_hi, pi_lo
otherwise the logic is not changed, long double versions will
need a revisit when a genaral long double cleanup happens
| Szabolcs Nagy | 12 | -377/+258 |
| 2012-12-11 | math: rewrite inverse hyperbolic functions to be simpler/smaller•••modifications:
* avoid unsigned->signed integer conversion
* do not handle special cases when they work correctly anyway
* more strict threshold values (0x1p26 instead of 0x1p28 etc)
* smaller code, cleaner branching logic
* same precision as the old code:
acosh(x) has up to 2ulp error in [1,1.125]
asinh(x) has up to 1.6ulp error in [0.125,0.5], [-0.5,-0.125]
atanh(x) has up to 1.7ulp error in [0.125,0.5], [-0.5,-0.125]
| Szabolcs Nagy | 9 | -406/+149 |
| 2012-12-11 | math: remove long double version of bessel functions from math.h•••j0l,j1l,jnl,y0l,j1l,jnl are gnu extensions, bsd and posix do not
have them.
noone seems to use them and there is no plan to implement them any
time soon so we shouldn't declare them in math.h.
| Szabolcs Nagy | 1 | -8/+0 |
| 2012-12-11 | make CMPLX macros available in complex.h in non-c11 mode as well | Szabolcs Nagy | 2 | -10/+0 |
| 2012-12-11 | fix double errno-decoding in the old-kernel fallback path of pipe2•••this bug seems to have caused any failure by pipe2 on such systems to
set errno to 1, rather than the proper error code.
| Rich Felker | 1 | -1/+1 |
| 2012-12-10 | fix regressions in app compatibility from previous sys/ipc.h changes•••despite glibc using __key and __seq rather than key and seq, some
applications, notably busybox, assume the names are key and seq unless
glibc is being used. and the names key and seq are really the ones
that _should_ be exposed when not attempting to present a
standards-conforming namespace; apps should not be using names that
begin with double-underscore. thus, the optimal fix is to use key and
seq as the actual names of the members when in bsd/gnu source profile,
and define macros for __key and __seq that redirect to plain key and
seq.
| Rich Felker | 1 | -0/+5 |
| 2012-12-10 | document self-synchronized destruction issue for stdio locking | Rich Felker | 1 | -0/+10 |
| 2012-12-10 | syscall() declaration belongs in unistd.h, not sys/syscall.h•••traditionally, both BSD and GNU systems have it this way.
sys/syscall.h is purely syscall number macros. presently glibc exposes
the syscall declaration in unistd.h only with _GNU_SOURCE, but that
does not reflect historical practice.
| Rich Felker | 2 | -10/+1 |
| 2012-12-07 | add support for ctors/dtors on arm with modern gcc•••a while back, gcc switched from using the old _init/_fini fragments
method for calling ctors and dtors on arm to the __init_array and
__fini_array method. unfortunately, on glibc this depends on ugly
hacks involving making libc.so a linker script and pulling parts of
libc into the main program binary. so I cheat a little bit, and just
write asm to iterate over the init/fini arrays from the _init/_fini
asm. the same approach could be used on any arch it's needed on, but
for now arm is the only one.
| Rich Felker | 2 | -4/+40 |
| 2012-12-07 | page-align initial brk value used by malloc in shared libc•••this change fixes an obscure issue with some nonstandard kernels,
where the initial brk syscall returns a pointer just past the end of
bss rather than the beginning of a new page. in that case, the dynamic
linker has already reclaimed the space between the end of bss and the
page end for use by malloc, and memory corruption (allocating the same
memory twice) will occur when malloc again claims it on the first call
to brk.
| Rich Felker | 1 | -1/+5 |
| 2012-12-07 | remove __arch_prctl alias for arch_prctl•••if there's evidence of any use for it, we can add it back later. as
far as I can tell, glibc has it only for internal use (and musl uses a
direct syscall in that case rather than a function call), not for
exposing it to applications.
| Rich Felker | 1 | -3/+1 |
| 2012-12-07 | move new linux syscall wrapper functions to proper source dir | Rich Felker | 2 | -0/+0 |
| 2012-12-07 | fix trailing whitespace issues that crept in here and there | Rich Felker | 5 | -13/+13 |
| 2012-12-06 | fix invalid read in aligned_alloc•••in case of mmap-obtained chunks, end points past the end of the
mapping and reading it may fault. since the value is not needed until
after the conditional, move the access to prevent invalid reads.
| Rich Felker | 1 | -2/+3 |
| 2012-12-06 | move signal.h REG_* macros under _GNU_SOURCE protection•••they were accidentally exposed under just baseline POSIX, which is a
big namespace pollution issue. thankfully glibc only exposes them
under _GNU_SOURCE, not under any of its other options, so omitting
the pollution in the default _BSD_SOURCE profile does not hurt
application compatibility at all.
| Rich Felker | 2 | -44/+48 |
| 2012-12-06 | fix names of ipc_perm __key/__seq elements•••previously the names were exposed as key/seq with _GNU_SOURCE and
__ipc_perm_key/__ipc_perm/seq otherwise, whereas glibc always uses
__key and __seq for the names. thus, the old behavior never matched
glibc, and the new behavior always does, regardless of feature test
macros.
for now, i'm leaving the renaming here in sys/ipc.h where it's easy to
change globally for all archs, in case something turns out to be
wrong, but eventually the names could just be incorporated directly
into the bits headers for each arch and the renaming removed.
| Rich Felker | 1 | -6/+2 |
| 2012-12-06 | fix sigorset/sigandset: _NSIG/8 is the size in bytes | rofl0r | 2 | -2/+2 |
| 2012-12-06 | fix F_DUPFD_CLOEXEC being defined twice | rofl0r | 1 | -1/+0 |
| 2012-12-06 | sigandset/sigorset: do not check for NULL pointers.•••that way it's consistent with existing sig* functions, and saves
some code size.
| rofl0r | 2 | -10/+0 |
| 2012-12-06 | fixup sigandset | rofl0r | 2 | -2/+2 |
| 2012-12-06 | fixup for fcntl.h changes | rofl0r | 1 | -15/+14 |
