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2012-04-22getdtablesize is not standard; move it to its correct spot in unistd.hRich Felker1-1/+1
2012-04-22fix breakage in endian.hRich Felker1-1/+1
2012-04-22add some ugly byte swapping cruft in endian.hRich Felker1-0/+59
2012-04-22add getresuid and getresgid syscall wrappersRich Felker1-0/+2
2012-04-18fix header typoRich Felker1-1/+1
2012-04-18legacy junk compatibility grab-bagRich Felker4-7/+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
2012-04-18fix incorrect macro name for MATH_ERREXCEPT in math.hRich Felker1-1/+1
2012-04-15move F_DUPFD_CLOEXEC out of bitsRich Felker1-0/+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.
2012-04-13rename __sa_restorer to sa_restorer in struct sigactionRich Felker1-1/+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.
2012-04-09fix alloca issue in stdlib.h tooRich Felker1-1/+1
I forgot _GNU_SOURCE also has it declared here...
2012-04-09alloca cannot be a function. #define it to the gcc builtin if possibleRich Felker1-0/+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.
2012-04-03remove useless (at best, harmful) feature test checks in aio.hRich Felker1-5/+0
2012-03-30optimize signbit macroRich Felker1-2/+2
2012-03-30make math.h more c++-friendlyRich Felker1-2/+5
2012-03-22simplify creal and cimag macrosRich Felker1-8/+8
2012-03-22add creal/cimag macros in complex.h (and use them in the functions defs)Rich Felker1-0/+11
2012-03-22tgmath.h: suppress any existing macro definitions before defining macrosRich Felker1-0/+63
this is necessary so that we can freely add macro versions of some of the math/complex functions without worrying about breaking tgmath.
2012-03-21fix DECIMAL_DIG definitionsRich Felker1-2/+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.
2012-03-21initial, very primitive strfmonRich Felker1-0/+21
2012-03-20limits.h: support gcc's -funsigned-charRich Felker1-2/+10
some software apparently uses this and breaks with musl due to mismatching definitions...
2012-03-17move nonstandard gamma() etc. to _GNU_SOURCE onlyRich Felker1-4/+4
it's not even provided in the library at the moment, but could easily be provided with weak aliases if desired.
2012-03-17c++ seems to want some casts in the float representation-access macrosRich Felker1-2/+2
2012-03-15in math.h make lgamma_r and non-double bessel _GNU_SOURCE onlynsz1-20/+18
long double and float bessel functions are no longer xsi extensions
2012-03-15efficient sincos based on sin and cosnsz1-0/+4
2012-03-13first commit of the new libm!Rich Felker3-9/+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.
2012-03-02fix nan/infinity macros in math.h, etc.Rich Felker1-6/+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.
2012-03-02typo in math.h c version checkRich Felker1-1/+1
2012-03-02make math.h compatibe with c89Rich Felker1-1/+5
2012-03-01add all missing wchar functions except floating point parsersRich Felker1-0/+15
these are mostly untested and adapted directly from corresponding byte string functions and similar.
2012-03-01add memory.h, bogus legacy alias for string.hRich Felker1-0/+1
2012-02-29use c++-friendly initializers for pthread initializer definitionsRich Felker1-3/+3
these will also avoid obnoxious warnings with gcc -Wbraces.
2012-02-29add <syscall.h> as an alias for <sys/syscall.h>Rich Felker1-0/+1
apparently some broken stuff (libstdc++) needs this.
2012-02-24replace prototype for basename in string.h with non-prototype declarationRich Felker1-1/+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.
2012-02-17add get_current_dir_name functionRich Felker1-0/+1
2012-02-15add float_t and double_t to math.hRich Felker1-0/+2
2012-02-09replace bad cancellation cleanup abi with a sane oneRich Felker1-16/+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.
2012-02-07fix typo in inotify.hRich Felker1-1/+1
2012-02-07declare basename in string.h when _GNU_SOURCE is definedRich Felker1-0/+1
note that it still will have the standards-conformant behavior, not the GNU behavior. but at least this prevents broken code from ending up with truncated pointers due to implicit declarations...
2012-02-07revert hacks for types of stdint.h integer constant macrosRich Felker1-4/+4
per 7.18.4: Each invocation of one of these macros shall expand to an integer constant expression suitable for use in #if preprocessing directives. The type of the expression shall have the same type as would an expression of the corresponding type converted according to the integer promotions. The value of the expression shall be that of the argument. the key phrase is "converted according to the integer promotions". thus there is no intent or allowance that the expression have smaller-than-int types.
2012-02-06more locale_t interfaces (string stuff) and header updatesRich Felker3-0/+15
this should be everything except for some functions where the non-_l version isn't even implemented yet (mainly some non-ISO-C wcs* functions).
2012-02-06fix some omissions and mistakes in locale_t interface definitionsRich Felker1-0/+24
2012-02-06add more of the locale_t interfaces, all dummied out to ignore the localeRich Felker1-0/+5
2012-02-06add deprecated (removed from posix) [efg]cvt() functionsRich Felker1-0/+3
these have not been heavily tested, but they should work as described in the old standards. probably broken for non-finite values...
2012-02-01apparently gnu caddr_t is supposed to be char *, not unsigned longRich Felker1-1/+1
this type should never be used anyway, but some old junk uses it..
2012-02-01fix utmp.h mess, try 2Rich Felker1-1/+1
2012-01-31fix previous utmp.h junk commitRich Felker1-1/+1
2012-01-31add some missing junk in utmp.hRich Felker1-0/+4
2012-01-29add fgetpwent (nonstandard function)Rich Felker1-0/+5
based on patch by Jeremy Huntwork
2012-01-28add linux setfs[ug]id syscall wrappersRich Felker1-0/+20
patch by Jeremy Huntwork
2012-01-26remove useless "extern" keywords in headersRich Felker3-3/+3
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