provide the minimal level of dynamic linker-to-debugger glue needed to
let gdb find loaded libra...

the code is written to pre-init the thread pointer in static linked
programs that pull in __stac...

otherwise this BADLY breaks if -funsigned-char is passed to gcc

i did some testing trying to switch malloc to use the new internal
lock with priority inheritanc...

this bug probably would have gone unnoticed since it's only used in
the fallback code for system...

we use priority inheritance futexes if possible so that the library
cannot hit internal priority...

i tried to go with improving the old binary-search-based algorithm,
but between growth in the nu...

also special-case ß (U+00DF) as lowercase even though it does not have
a mapping to uppercase. u...

this happened due to their entries in UnicodeData.txt

alpha is defined as unicode property "Alphabetic" plus category Nd
minus ASCII digits minus 2 sp...

note that dlerror is specified to be non-thread-safe, so no locking is
performed on the error fl...

I actually wrote these a month ago but forgot to integrate them. ugly,
probably-harmful-to-use f...

the _concept_ of this wrapper has been tested extensively, but the
integration with the build/in...

also be extra careful to avoid wrapping the circular buffer early

care is taken that the setting of errno correctly reflects underflow
condition. scanning exact d...

in principle this should just be an optimization, but it happens to
also fix a nasty bug where v...

bug detected by glib test suite

this caused glib to try to allocate >2gb for getpwnam_r, and probably
numerous other problems.

- add the rest of the junk traditionally in sys/param.h
- add prototypes for some nonstandard fu...

this was basically harmless, but could have resulted in misreading
inputs with more than a few g...

this also includes a related fix for vswscanf's read function, which
was returning a spurious (u...

this code worked in strtod, but not in scanf. more evidence that i
should design a better interf...

at this point, strto* and all scanf family functions are using the new
unified integer and float...

assuming other code is correct, this should be a no-op, but better to
be safe...

vfprintf temporarily swaps in a local buffer (for the duration of the
operation) when the target...

the l prefix is redundant/no-op with printf, since default promotions
always promote floats to d...

not heavily tested but these functions appear to work correctly

shunget cannot unget eof status, causing wcstol to leave endptr
pointing to the wrong place when...

advantages over the old code:
- correct results for floating point (old code was bogus)
- wide/r...

this is needed for upcoming new scanf

I'm not sure if it's legal for wordexp to modify this field, but this
is the only easy/straightf...

this off-by-one error was causing values with just one digit past the
decimal point to be treate...

fcntl values 1024 and up are universal, arch-independent. later I'll
add some of the other linux...

F_* is in the reserved namespace so no feature test is needed

the "< 0" test was always false due to use of an unsigned type. this
resulted in infinite loops ...

this is legal since sa_* is in the reserved namespace for signal.h,
per posix. note that the sa_...

TRE wants to treat + and ? after a +, ?, or * as special; ? means
ungreedy and + is reserved for...

this increases code size slightly, but it's considerably faster,
especially for power-of-2 bases.

at -Os optimization level, gcc refuses to inline these functions even
though the inlined code wo...

whenever the base was small enough that more than one digit could
still fit after UINTMAX_MAX/36...

when upscaling, even the very last digit is needed in cases where the
input is exact; no digits ...

now that this is the first operation, it can rely on the circular
buffer contents not being wrap...

upscaling by even one step too much creates 3-29 extra iterations for
the next loop. this is sti...

for example, "1000000000" was being read as "1" due to this loop
exiting early. it's necessary t...

note that there's no need for a precise cutoff, because exponents this
large will always result ...

the immediate benefit is a significant debloating of the float parsing
code by moving the respon...

this version is intended to be fully conformant to the ISO C, POSIX,
and IEEE standards for conv...

I forgot _GNU_SOURCE also has it declared here...

gcc makes this mapping by default anyway, but it will be disabled by
-fno-builtin (and presumabl...

use (1-x)*(1+x) instead of (1-x*x) in asin.s
the later can be inaccurate with upward rounding whe...

when the "r" (register) constraint is used to let gcc choose a
register, gcc will sometimes assi...

the buffer in getaddrinfo really only matters when /etc/hosts is huge,
but in that case, the hug...

the int part was wrong when -1 < x <= -0 (+0.0 instead of -0.0)
and the size and performace gain ...

cleaner implementation with unions and unsigned arithmetic

modfl(+-inf) was wrong on ld80 because the explicit msb
was not taken into account during inf vs ...

previously a division was accidentally turned into integer div
(w = -i/NXT;) instead of long doub...

It is probably not worth supporting gamma.
(it was already deprecated in 4.3BSD)

(fldl instruction was used instead of flds and fldt)