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* in math.h make lgamma_r and non-double bessel _GNU_SOURCE onlynsz2012-03-154-20/+21
| | | | long double and float bessel functions are no longer xsi extensions
* efficient sincos based on sin and cosnsz2012-03-155-8/+251
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* math cleanup: use 1.0f instead of 1.0Fnsz2012-03-134-6/+6
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* math cleanup: use 1.0f instead of (float)1.0nsz2012-03-1325-96/+96
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* remove libm.h includes when math.h and float.h are enoughnsz2012-03-1331-30/+47
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* clean up __expo2.c, use a slightly better k constantnsz2012-03-132-84/+14
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* fix copyright notice for the math libnsz2012-03-131-5/+9
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* implement nan, nanf, nanlRich Felker2012-03-133-0/+18
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* first commit of the new libm!Rich Felker2012-03-13378-7738/+20547
| | | | | | | | | | | | | | | | thanks to the hard work of Szabolcs Nagy (nsz), identifying the best (from correctness and license standpoint) implementations from freebsd and openbsd and cleaning them up! musl should now fully support c99 float and long double math functions, and has near-complete complex math support. tgmath should also work (fully on gcc-compatible compilers, and mostly on any c99 compiler). based largely on commit 0376d44a890fea261506f1fc63833e7a686dca19 from nsz's libm git repo, with some additions (dummy versions of a few missing long double complex functions, etc.) by me. various cleanups still need to be made, including re-adding (if they're correct) some asm functions that were dropped.
* add .gitignore fileRich Felker2012-03-091-0/+9
| | | | | I've had this around for a long time but somehow it never got committed.
* fix nan/infinity macros in math.h, etc.Rich Felker2012-03-021-6/+8
| | | | | | | | | | | the previous version not only failed to work in c++, but also failed to produce constant expressions, making the macros useless as initializers for objects of static storage duration. gcc 3.3 and later have builtins for these, which sadly seem to be the most "portable" solution. the alternative definitions produce exceptions (for NAN) and compiler warnings (for INFINITY) on newer versions of gcc.
* fix obscure bug in strtoull reading the highest 16 possible valuesRich Felker2012-03-021-1/+1
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* typo in math.h c version checkRich Felker2012-03-021-1/+1
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* make math.h compatibe with c89Rich Felker2012-03-021-1/+5
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* remove debug cruft that was left in getdateRich Felker2012-03-021-2/+0
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* first try at implementing getdate functionRich Felker2012-03-021-0/+47
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* fix bugs in strptime handling of string day/month names, literalsRich Felker2012-03-021-0/+2
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* implement a64l and l64a (legacy xsi stuff)Rich Felker2012-03-011-0/+26
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* add all missing wchar functions except floating point parsersRich Felker2012-03-0112-0/+98
| | | | | these are mostly untested and adapted directly from corresponding byte string functions and similar.
* support null buffer argument to getcwd, auto-allocating behaviorRich Felker2012-03-011-1/+6
| | | | | | | this is a popular extension some programs depend on, and by using a temporary buffer and strdup rather than malloc prior to the syscall, i've avoided the dependency on free and thus minimized the bloat cost of supporting this feature.
* add memory.h, bogus legacy alias for string.hRich Felker2012-03-011-0/+1
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* search internal headers firstRich Felker2012-03-011-1/+1
| | | | this is necessitated by the ugly <syscall.h> just added
* use c++-friendly initializers for pthread initializer definitionsRich Felker2012-02-291-3/+3
| | | | these will also avoid obnoxious warnings with gcc -Wbraces.
* add <syscall.h> as an alias for <sys/syscall.h>Rich Felker2012-02-291-0/+1
| | | | apparently some broken stuff (libstdc++) needs this.
* implement wcsftime functionRich Felker2012-02-281-0/+32
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* release notes for 0.8.6 v0.8.6Rich Felker2012-02-281-0/+7
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* fix pthread_cleanup_pop(1) crash in non-thread-capable, static-linked programsRich Felker2012-02-282-2/+2
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* update release notes for 0.8.5 v0.8.5Rich Felker2012-02-271-0/+35
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* work around "signal loses thread pointer" issue with "approach 2"Rich Felker2012-02-272-2/+8
| | | | | | | | | | | | this was discussed on the mailing list and no consensus on the preferred solution was reached, so in anticipation of a release, i'm just committing a minimally-invasive solution that avoids the problem by ensuring that multi-threaded-capable programs will always have initialized the thread pointer before any signal handler can run. in the long term we may switch to initializing the thread pointer at program start time whenever the program has the potential to access any per-thread data.
* use __attribute__((const)) on arm __pthread_self functionRich Felker2012-02-251-1/+3
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* replace prototype for basename in string.h with non-prototype declarationRich Felker2012-02-241-1/+1
| | | | | | | | GNU programs may expect the GNU version of basename, which has a different prototype (argument is const-qualified) and prototype it themselves too. of course if they're expecting the GNU behavior for the function, they'll still run into problems, but at least this eliminates some compile-time failures.
* new attempt at working around the gcc 3 visibility bugRich Felker2012-02-243-0/+11
| | | | | since gcc is failing to generate the necessary ".hidden" directive in the output asm, generate it explicitly with an __asm__ statement...
* remove useless attribute visibility from definitionsRich Felker2012-02-242-2/+2
| | | | | | this was a failed attempt at working around the gcc 3 visibility bug affecting x86_64. subsequent patch will address it with an ugly but working hack.
* cleanup and work around visibility bug in gcc 3 that affects x86_64Rich Felker2012-02-234-12/+15
| | | | | | | | | | | | | | in gcc 3, the visibility attribute must be placed on both the declaration and on the definition. if it's omitted from the definition, the compiler fails to emit the ".hidden" directive in the assembly, and the linker will either generate textrels (if supported, such as on i386) or refuse to link (on targets where certain types of textrels are forbidden or impossible without further assumptions about memory layout, such as on x86_64). this patch also unifies the decision about when to use visibility into libc.h and makes the visibility in the utf-8 state machine tables based on libc.h rather than a duplicate test.
* fix (hopefully) PTRACE_TRACEME (command 0) argument handlingRich Felker2012-02-231-2/+2
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* fix for previous incorrect fix of cancellation in dns lookupsRich Felker2012-02-231-3/+4
| | | | | uninitialized file descriptor was being closed on return, causing stdin to be closed in many cases.
* fix get_current_dir_name behaviorRich Felker2012-02-171-2/+6
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* remove -std=gnu99 from musl-gcc wrapperRich Felker2012-02-171-1/+1
| | | | | while probably desirable, changing the default language variant is outside the scope of the wrapper's responsibility.
* two fixes for "make install" handling of shared libsRich Felker2012-02-171-1/+2
| | | | | | | | 1. don't try to install (and thus build) shared libs when they were disabled in config.mak 2. ensure that the path for the dynamic linker exists before attempting to install it.
* add get_current_dir_name functionRich Felker2012-02-172-0/+13
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* add float_t and double_t to math.hRich Felker2012-02-154-0/+11
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* fix default nameserver when resolv.conf doesn't existRich Felker2012-02-111-1/+2
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* fix illegal goto out of cleanup context in dns lookupsRich Felker2012-02-111-3/+3
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* small fix for new pthread cleanup stuffRich Felker2012-02-092-1/+1
| | | | | | | even if pthread_create/exit code is not linked, run flag needs to be checked and cleanup function potentially run on pop. thus, move the code to the module that's always linked when pthread_cleanup_push/pop is used.
* replace bad cancellation cleanup abi with a sane oneRich Felker2012-02-097-115/+32
| | | | | | | | | | | | | | | | | | | | | | the old abi was intended to duplicate glibc's abi at the expense of being ugly and slow, but it turns out glib was not even using that abi except on non-gcc-compatible compilers (which it doesn't even support) and was instead using an exceptions-in-c/unwind-based approach whose abi we could not duplicate anyway without nasty dwarf2/unwind integration. the new abi is copied from a very old glibc abi, which seems to still be supported/present in current glibc. it avoids all unwinding, whether by sjlj or exceptions, and merely maintains a linked list of cleanup functions to be called from the context of pthread_exit. i've made some care to ensure that longjmp out of a cleanup function should work, even though it is not required to. this change breaks abi compatibility with programs which were using pthread cancellation, which is unfortunate, but that's why i'm making the change now rather than later. considering that most pthread features have not been usable until recently anyway, i don't see it as a major issue at this point.
* document iswspace and remove wrongly-included zwsp characterRich Felker2012-02-091-1/+5
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* fix typo in iswspace space list tableRich Felker2012-02-091-1/+1
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* fix typo in inotify.hRich Felker2012-02-071-1/+1
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* protect against cancellation in dlopenRich Felker2012-02-071-2/+5
| | | | | | | i'm not sure that it's "correct" for dlopen to block cancellation when calling constructors for libraries it loads, but it sure seems like the right thing. in any case, dlopen itself needs cancellation blocked.
* reduce some wasted space in dso structureRich Felker2012-02-071-3/+3
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