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* some extra legacy header stuffRich Felker2012-05-063-0/+32
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* take byte order from gcc if gcc has defined itRich Felker2012-05-061-0/+4
| | | | | | | this only works with gcc 4.6 and later, but it allows us to support non-default endianness on archs like arm, mips, ppc, etc. that can do both without having separate header sets for both variants, and it saves one #include even on fixed-endianness archs like x86.
* add isastream (obsolete STREAMS junk)Rich Felker2012-05-061-1/+2
| | | | | | apparently some packages see stropts.h and want to be able to use this. the implementation checks that the file descriptor is valid by using fcntl/F_GETFD so it can report an error if not (as specified).
* fix definitions of FP_ILOGB constantsRich Felker2012-05-051-2/+2
| | | | | | | | | | | | | | | two issues: (1) the type was wrong (unsigned instead of signed int), and (2) the value of FP_ILOGBNAN should be INT_MIN rather than INT_MAX to match the ABI. this is also much more useful since INT_MAX corresponds to a valid input (infinity). the standard would allow us to set FP_ILOGB0 to -INT_MAX instead of INT_MIN, which would give us distinct values for ilogb(0) and ilogb(NAN), but the benefit seems way too small to justify ignoring the ABI. note that the macro is just a "portable" (to any twos complement system where signed and unsigned int have the same width) way to write INT_MIN without needing limits.h. it's valid to use this method since these macros are not required to work in #if directives.
* add *64 junk for sys/*.h headersRich Felker2012-05-047-0/+50
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* add support for ugly *64 functions with _LARGEFILE64_SOURCERich Felker2012-05-048-0/+68
| | | | | | | | | | | | | | | | musl does not support legacy 32-bit-off_t whatsoever. off_t is always 64 bit, and correct programs that use off_t and the standard functions will just work out of the box. (on glibc, they would require -D_FILE_OFFSET_BITS=64 to work.) however, some programs instead define _LARGEFILE64_SOURCE and use alternate versions of all the standard types and functions with "64" appended to their names. we do not want code to actually get linked against these functions (it's ugly and inconsistent), so macros are used instead of prototypes with weak aliases in the library itself. eventually the weak aliases may be added at the library level for the sake of using code that was originally built against glibc, but the macros will still be the desired solution in the headers.
* uglify headers for the sake of junk that compiles with gcc -std=c89/-ansiRich Felker2012-05-032-6/+24
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* add additional compatibility union member for ipv6 addressesRich Felker2012-05-031-0/+2
| | | | in6_* is in the reserved namespace, so this is valid
* remove minimal linux kernel headersRich Felker2012-05-015-621/+0
| | | | | | | | | | | these were at best of limited usefulness (for bootstrapping new systems, mainly) and at worst caused real kernel headers to get overwritten when upgrading libc. in case they're needed by anyone, the exact same files are now available in a new git repository: git://git.etalabs.net/mini-lkh
* support alternate glibc name pow10 for exp10Rich Felker2012-05-011-0/+3
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* first try at writing an efficient and "correct" exp10Rich Felker2012-04-301-0/+4
| | | | | | | | | this is a nonstandard function so it's not clear what conditions it should satisfy. my intent is that it be fast and exact for positive integral exponents when the result fits in the destination type, and fast and correctly rounded for small negative integral exponents. otherwise we aim for at most 1ulp error; it seems to differ from pow by at most 1ulp and it's often 2-5 times faster than pow.
* add linux-specific unshare syscall wrapperRich Felker2012-04-291-0/+1
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* implement getusershell, etc. legacy functionsRich Felker2012-04-221-0/+3
| | | | | I actually wrote these a month ago but forgot to integrate them. ugly, probably-harmful-to-use functions, but some legacy apps want them...
* getdtablesize is not standard; move it to its correct spot in unistd.hRich Felker2012-04-221-1/+1
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* fix breakage in endian.hRich Felker2012-04-221-1/+1
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* add some ugly byte swapping cruft in endian.hRich Felker2012-04-221-0/+59
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* add getresuid and getresgid syscall wrappersRich Felker2012-04-221-0/+2
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* fix header typoRich Felker2012-04-181-1/+1
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* legacy junk compatibility grab-bagRich Felker2012-04-184-7/+34
| | | | | | - add the rest of the junk traditionally in sys/param.h - add prototypes for some nonstandard functions - add _GNU_SOURCE to their source files so the compiler can check proto
* fix incorrect macro name for MATH_ERREXCEPT in math.hRich Felker2012-04-181-1/+1
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* move F_DUPFD_CLOEXEC out of bitsRich Felker2012-04-151-0/+2
| | | | | | fcntl values 1024 and up are universal, arch-independent. later I'll add some of the other linux-specific ones for notify, leases, pipe size, etc. here too.
* rename __sa_restorer to sa_restorer in struct sigactionRich Felker2012-04-131-1/+1
| | | | | | | | | this is legal since sa_* is in the reserved namespace for signal.h, per posix. note that the sa_restorer field is not used anywhere, so programs that are trying to use it may still break, but at least they'll compile. if it turns out such programs actually need to be able to set their own sa_restorer to function properly, i'll add the necessary code to sigaction.c later.
* fix alloca issue in stdlib.h tooRich Felker2012-04-091-1/+1
| | | | I forgot _GNU_SOURCE also has it declared here...
* alloca cannot be a function. #define it to the gcc builtin if possibleRich Felker2012-04-091-0/+4
| | | | | | | | gcc makes this mapping by default anyway, but it will be disabled by -fno-builtin (and presumably by -std=c99 or similar). for the main program the error will be reported by the linker, and the issue can easily be fixed, but for dynamic-loaded so files, the error cannot be detected until dlopen time, at which point it has become very obscure.
* remove useless (at best, harmful) feature test checks in aio.hRich Felker2012-04-031-5/+0
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* optimize signbit macroRich Felker2012-03-301-2/+2
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* make math.h more c++-friendlyRich Felker2012-03-301-2/+5
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* simplify creal and cimag macrosRich Felker2012-03-221-8/+8
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* add creal/cimag macros in complex.h (and use them in the functions defs)Rich Felker2012-03-221-0/+11
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* tgmath.h: suppress any existing macro definitions before defining macrosRich Felker2012-03-221-0/+63
| | | | | this is necessary so that we can freely add macro versions of some of the math/complex functions without worrying about breaking tgmath.
* fix DECIMAL_DIG definitionsRich Felker2012-03-211-2/+0
| | | | | | | | | | | | | DECIMAL_DIG is not the same as LDBL_DIG type_DIG is the maximimum number of decimal digits that can survive a round trip from decimal to type and back to decimal. DECIMAL_DIG is the minimum number of decimal digits required in order for any floating point type to survive the round trip to decimal and back, and it is generally larger than LDBL_DIG. since the exact formula is non-trivial, and defining it larger than necessary may be legal but wasteful, just define the right value in bits/float.h.
* initial, very primitive strfmonRich Felker2012-03-211-0/+21
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* limits.h: support gcc's -funsigned-charRich Felker2012-03-201-2/+10
| | | | | some software apparently uses this and breaks with musl due to mismatching definitions...
* move nonstandard gamma() etc. to _GNU_SOURCE onlyRich Felker2012-03-171-4/+4
| | | | | it's not even provided in the library at the moment, but could easily be provided with weak aliases if desired.
* c++ seems to want some casts in the float representation-access macrosRich Felker2012-03-171-2/+2
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* in math.h make lgamma_r and non-double bessel _GNU_SOURCE onlynsz2012-03-151-20/+18
| | | | long double and float bessel functions are no longer xsi extensions
* efficient sincos based on sin and cosnsz2012-03-151-0/+4
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* first commit of the new libm!Rich Felker2012-03-133-9/+354
| | | | | | | | | | | | | | | | 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.
* 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.
* 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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* add all missing wchar functions except floating point parsersRich Felker2012-03-011-0/+15
| | | | | these are mostly untested and adapted directly from corresponding byte string functions and similar.
* add memory.h, bogus legacy alias for string.hRich Felker2012-03-011-0/+1
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* 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.
* 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.
* add get_current_dir_name functionRich Felker2012-02-171-0/+1
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* add float_t and double_t to math.hRich Felker2012-02-151-0/+2
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* replace bad cancellation cleanup abi with a sane oneRich Felker2012-02-091-16/+9
| | | | | | | | | | | | | | | | | | | | | | 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.
* fix typo in inotify.hRich Felker2012-02-071-1/+1
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