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* Merge remote-tracking branch 'nsz/math'Rich Felker2012-11-187-237/+171
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| * math: use float constants in exp10f.cSzabolcs Nagy2012-11-181-1/+1
| | | | | | | | use the 'f' suffix when a float constant is not representable
| * math: expl.c cleanupSzabolcs Nagy2012-11-181-24/+19
| | | | | | | | raise overflow and underflow when necessary, fix various comments.
| * math: expf.c cleanupSzabolcs Nagy2012-11-182-63/+55
| | | | | | | | | | | | similar to exp.c cleanup: use scalbnf, don't return excess precision, drop some optimizatoins. exp.c was changed to be more consistent with expf.c code.
| * math: cleanup exp2.c exp2f.c and exp2l.cSzabolcs Nagy2012-11-173-86/+56
| | | | | | | | | | | | * old code relied on sign extension on right shift * exp2l ld64 wrapper was wrong * use scalbn instead of bithacks
| * math: exp.c clean upSzabolcs Nagy2012-11-171-72/+49
| | | | | | | | | | | | | | overflow and underflow was incorrect when the result was not stored. an optimization for the 0.5*ln2 < |x| < 1.5*ln2 domain was removed. did various cleanups around static constants and made the comments consistent with the code.
* | fcntl.h: O_SEARCH was missing for powerpcrofl0r2012-11-186-24/+13
| | | | | | | | | | | | put some macros that do not differ between architectures in the main header and remove from bits. restructure mips header so it has the same structure as the others.
* | ppc socket.h: add forgotten cmsghdrrofl0r2012-11-181-0/+7
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* | fix typo in dynamic linker path file loading codeRich Felker2012-11-171-1/+1
| | | | | | | | | | | | fortunately the memory corruption could not hurt anything, but it prevented clearing the final newline and thus prevented the last path element from working.
* | add cleaned-up sys/mtio.hRich Felker2012-11-171-0/+188
| | | | | | | | | | this is mostly junk, but a few programs with tape-drive support unconditionally include it, and it might be useful.
* | add stub versions of some missing optional pthread interfacesRich Felker2012-11-176-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | priority inheritance is not yet supported, and priority protection probably will not be supported ever unless there's serious demand for it (it's a fairly heavy-weight feature). per-thread cpu clocks would be nice to have, but to my knowledge linux is still not capable of supporting them. glibc fakes them by using the _process_ cpu-time clock and subtracting the thread creation time, which gives seriously incorrect semantics (worse than not supporting the feature at all), so until there's a way to do it right, it will remain as a stub that always fails.
* | arg-skipping code for powerpc dynamic linkerRich Felker2012-11-171-0/+8
|/ | | | this allows using the dynamic linker as a command to load programs.
* dynamic linking support for powerpcRich Felker2012-11-162-25/+43
| | | | | | | | incomplete but at least partly working. requires all files to be compiled in the new "secure" plt model, not the old one that put plt code in the data segment. TLS is untested but may work. invoking the dynamic linker explicitly to load a program does not yet handle argv correctly.
* fix ppc stat structure definitionRich Felker2012-11-161-4/+3
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* fix powerpc termios.h and ioctl.hrofl0r2012-11-162-192/+232
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* disable SO_REUSEPORT in sys/socket.hRich Felker2012-11-152-2/+2
| | | | | | although a number is reserved for it, this option is not implemented on Linux and does not work. defining it causes some applications to use it, and subsequently break due to its failure.
* ppc wchar_t is long, not intRich Felker2012-11-151-1/+1
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* Merge remote-tracking branch 'nsz/math'Rich Felker2012-11-1587-372/+339
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| * fenv: return FE_TONEAREST in dummy fegetroundSzabolcs Nagy2012-11-141-1/+1
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| * math: ld80 invtrig cleanupsSzabolcs Nagy2012-11-148-110/+87
| | | | | | | | keeping only commonly used data in invtrigl
| * math: simplify hypot and hypotf using scalbnSzabolcs Nagy2012-11-132-11/+4
| | | | | | | | | | this also fixes overflow/underflow raising and excess precision issues (as those are handled well in scalbn)
| * math: turn off the STRICT_ASSIGN workaround by defaultSzabolcs Nagy2012-11-131-5/+3
| | | | | | | | | | | | | | | | | | the volatile hack in STRICT_ASSIGN is only needed if assignment is not respected and excess precision is kept. gcc -fexcess-precision=standard and -ffloat-store both respect assignment and musl use these flags by default. i kept the macro for now so the workaround may be used for bad compilers in the future.
| * math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessedSzabolcs Nagy2012-11-1310-0/+11
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| * math: excess precision fix modf, modff, scalbn, scalbnfSzabolcs Nagy2012-11-134-22/+18
| | | | | | | | | | | | | | old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. now we use STRICT_ASSIGN to work around the issue. (see note 160 in c11 section 6.8.6.4)
| * math: fix scalbn and scalbnf on overflow/underflowSzabolcs Nagy2012-11-132-10/+24
| | | | | | | | | | | | old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. (see note 160 in n1570.pdf section 6.8.6.4)
| * math: fix nextafter and nexttoward on maxdbl and maxflt inputSzabolcs Nagy2012-11-134-4/+4
| | | | | | | | | | old code (return x+x;) returns correct value and raises correct flags only if the result is stored as double (or float)
| * complex: add C11 CMPLX macros and replace cpack with themSzabolcs Nagy2012-11-1347-156/+152
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| * math: raise flags in logl.c on <= 0 argumentsSzabolcs Nagy2012-11-132-9/+3
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| * math: fix logb*.c exceptions now that ilogb raises invalidSzabolcs Nagy2012-11-133-25/+17
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| * math: raise flags in log2l.c on <= 0 arguments, and fix volatileSzabolcs Nagy2012-11-131-8/+3
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| * math: raise exception flags in log1pl.c on <= -1 argumentsSzabolcs Nagy2012-11-131-7/+2
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| * math: raise invalid flag in ilogb*.c on +-0, +-inf and nanSzabolcs Nagy2012-11-123-6/+18
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| * math: fix exception behaviour of expm1l.c on inf and nanSzabolcs Nagy2012-11-121-13/+7
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| * math: fix long double constants in exp10l.cSzabolcs Nagy2012-11-121-2/+2
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* | update copyright file for recent contributionsRich Felker2012-11-141-5/+9
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* | fix indention with spaces in powerpc asmRich Felker2012-11-147-55/+54
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* | fix powerpc atomic compare-and-swap functionRich Felker2012-11-141-6/+7
| | | | | | | | | | previous version did not compare at all; it was just a fancy atomic write. untested. further atomic fixes may be needed.
* | update ppc atomic code to match the endian-agnostic version on other archsRich Felker2012-11-141-14/+6
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* | fix wchar limits mistakenly copied from armRich Felker2012-11-141-2/+2
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* | Merge remote-tracking branch 'ppc-port/ppc-squashed'Rich Felker2012-11-1442-0/+2402
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| * PPC port cleaned up, static linking works well now.rofl0r2012-11-1355-1095/+1373
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| * import preliminary ppc work by rdp.Richard Pennington2012-11-1338-0/+2124
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* | debloat src/thread tree but putting lots of junk in one fileRich Felker2012-11-1116-108/+93
| | | | | | | | | | | | | | | | | | | | | | | | POSIX includes mostly-useless attribute-get functions for each attribute-set function, presumably out of some object-oriented dogmatism. the get functions are not useful with the simple idiomatic usage of attributes. there are of course possible valid uses of them (like writing wrappers for pthread init functions that perform special actions on the presence of certain attributes), but considering how tiny these functions are anyway, little is lost by putting them all in one file, and some build-time cost and archive-file-size benefits are achieved.
* | report support of TPS option in unistd.h and sysconfRich Felker2012-11-112-2/+3
| | | | | | | | also update another newish feature in sysconf, stackaddr
* | add support for thread scheduling (POSIX TPS option)Rich Felker2012-11-1123-13/+159
| | | | | | | | | | | | | | | | | | | | linux's sched_* syscalls actually implement the TPS (thread scheduling) functionality, not the PS (process scheduling) functionality which the sched_* functions are supposed to have. omitting support for the PS option (and having the sched_* interfaces fail with ENOSYS rather than omitting them, since some broken software assumes they exist) seems to be the only conforming way to do this on linux.
* | fix clobber of edx in i386 vsyscall asmRich Felker2012-11-111-1/+2
| | | | | | | | | | | | | | this function does not obey the normal calling convention; like a syscall instruction, it's expected not to clobber any registers except the return value. clobbering edx could break callers that were reusing the value cached in edx after the syscall returns.
* | always add memory streams to stdio open file listRich Felker2012-11-093-18/+21
| | | | | | | | | | | | | | | | | | | | | | | | per interpretation for austin group issue #626, fflush(0) and exit() must block waiting for a lock if another thread has locked a memory stream with flockfile. this adds some otherwise-unnecessary synchronization cost to use of memory streams, but there was already a synchronization cost calling malloc anyway. previously the stream was only added to the open file list in single-threaded programs, so that upon subsequent call to pthread_create, locking could be turned on for the stream.
* | support ldso path files without final newlineRich Felker2012-11-091-2/+5
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* | change ldso path file logic to replace rather than add to search pathRich Felker2012-11-081-2/+2
| | | | | | | | | | | | | | | | | | | | | | this change was originally intended just to avoid repeated attempts to open a nonexistant /etc/ls-musl-$(ARCH).path file, but I realized it also prevents the default paths from being searched when such a path file exists. despite the potential to break existing usage, I believe the new behavior is the right behavior, and it's better to fix it sooner rather than later. with the old behavior, it was impossible to inhibit search of default paths which might contain musl-incompatible libs (or even libs from a different cpu arch, on multi-arch machines).
* | fix "configure --prefix=" and improve path/arg handling in configureRich Felker2012-11-081-16/+12
| | | | | | | | | | | | | | previously, empty string was treated as "use default". this is apparently not compatible with standard configure semantics where an empty prefix puts everything under /. the new logic should be a lot cleaner and not suffer from such issues.
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