semios/semi-libc
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e980ca7a571465e8a4c887a199491c2cd8d0c0ee
semi-libc/include
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Szabolcs NagyandRich Felker e980ca7a57 define FP_FAST_FMA* when fma* can be inlined 
FP_FAST_FMA can be defined if "the fma function generally executes about
as fast as, or faster than, a multiply and an add of double operands",
which can only be true if the fma call is inlined as an instruction.

gcc sets __FP_FAST_FMA if __builtin_fma is inlined as an instruction,
but that does not mean an fma call will be inlined (e.g. it is defined
with -fno-builtin-fma), other compilers (clang) don't even have such
macro, but this is the closest we can get.

(even if the libc fma implementation is a single instruction, the extern
call overhead is already too big when the macro is used to decide between
x*y+z and fma(x,y,z) so it cannot be based on libc only, defining the
macro unconditionally on targets which have fma in the base isa is also
incorrect: the compiler might not inline fma anyway.)

this solution works with gcc unless fma inlining is explicitly turned off.
2019-04-17 13:02:47 -04:00
..
arpa
fix endian errors in arpa/nameser.h due to failure to include endian.h
2017-12-14 23:36:47 -05:00
net
net/if_arp.h: add ARPHRD_RAWIP from linux v4.14
2018-02-22 18:47:49 -05:00
netinet
netinet/tcp.h: add TCP_NLA_SRTT from linux v5.0
2019-03-13 12:33:54 -04:00
netpacket
add PACKET_IGNORE_OUTGOING sockopt from linux v4.20
2019-03-13 12:32:19 -04:00
scsi
add legacy scsi/scsi_ioctl.h header
2013-07-03 18:07:50 +02:00
sys
sys/prctl.h: add PR_PAC_RESET_KEYS from linux v5.0
2019-03-13 12:34:56 -04:00
aio.h
make all objects used with atomic operations volatile
2015-03-03 22:50:02 -05:00
alloca.h
alloca cannot be a function. #define it to the gcc builtin if possible
2012-04-09 15:06:58 -04:00
alltypes.h.in
make FILE a complete type for pre-C11 standard profiles
2019-03-12 15:24:00 -04:00
ar.h
some extra legacy header stuff
2012-05-06 16:35:32 -04:00
assert.h
restore _Noreturn to __assert_fail
2016-08-30 16:39:54 -04:00
byteswap.h
remove all remaining redundant __restrict/__inline/_Noreturn defs
2012-09-08 17:14:52 -04:00
complex.h
fix mismatched parens in CMPLX def for annex-g-conforming compilers
2015-11-02 21:44:57 -05:00
cpio.h
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
crypt.h
replace old and ugly crypt implementation
2012-06-29 00:56:37 -04:00
ctype.h
add macro version of ctype.h isascii function
2015-06-06 18:16:22 +00:00
dirent.h
add _DIRENT_HAVE_D_* macros to dirent.h
2018-01-12 14:26:59 -05:00
dlfcn.h
const-qualify the address argument to dladdr
2014-01-06 22:03:38 -05:00
elf.h
elf.h: add NT_ definitions from linux v5.0
2019-03-13 12:34:08 -04:00
endian.h
default features: make musl usable without feature test macros
2012-09-07 23:13:55 -04:00
err.h
fix redundant _Noreturn def in err.h
2012-09-08 18:16:33 -04:00
errno.h
restore attribute((const)) to pthread_self and errno location decls
2018-10-16 14:10:27 -04:00
fcntl.h
fcntl.h: define O_TTY_INIT to 0
2019-04-10 20:37:04 -04:00
features.h
in public headers, don't assume pre-C99 compilers have __inline keyword
2016-12-16 23:12:32 -05:00
fenv.h
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
float.h
fix FLT_ROUNDS regression in C++ applications
2015-03-23 11:26:51 -04:00
fmtmsg.h
implement fmtmsg function
2014-06-21 19:24:15 -04:00
fnmatch.h
remove now-unnecessary features.h inclusion from fnmatch.h
2013-12-02 02:06:52 -05:00
ftw.h
make brace placement in public header struct definitions consistent
2016-07-03 15:02:25 -04:00
getopt.h
make brace placement in public header struct definitions consistent
2016-07-03 15:02:25 -04:00
glob.h
fix macros for LFS *64_t types in sys/stat.h, sys/types.h, glob.h
2014-09-05 16:03:07 -04:00
grp.h
fix various header namespace issues under feature-test-macro control
2016-10-20 17:20:01 -04:00
iconv.h
remove all remaining redundant __restrict/__inline/_Noreturn defs
2012-09-08 17:14:52 -04:00
ifaddrs.h
remove parameter names from public headers
2016-10-20 17:04:37 -04:00
inttypes.h
fix inttypes.h PRI and SCN macros for [u]intptr_t types
2013-10-30 14:52:55 -04:00
iso646.h
add previously-missing ios646.h
2011-02-14 21:59:38 -05:00
langinfo.h
add _NL_LOCALE_NAME extension to nl_langinfo
2017-07-31 23:08:27 -04:00
lastlog.h
some extra legacy header stuff
2012-05-06 16:35:32 -04:00
libgen.h
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
libintl.h
add format argument attributes to gettext function prototypes
2015-09-15 20:30:36 +00:00
limits.h
fix dubious char signedness check in limits.h
2018-08-28 13:54:50 -04:00
link.h
generalize ELF hash table types not to assume 32-bit entries
2016-11-11 12:46:06 -05:00
locale.h
restore type of NULL to void * except when used in C++ programs
2013-11-24 21:42:55 -05:00
malloc.h
add malloc_usable_size function and non-stub malloc.h
2014-08-25 22:47:27 -04:00
math.h
define FP_FAST_FMA* when fma* can be inlined
2019-04-17 13:02:47 -04:00
memory.h
add memory.h, bogus legacy alias for string.h
2012-03-01 01:34:58 -05:00
mntent.h
make brace placement in public header struct definitions consistent
2016-07-03 15:02:25 -04:00
monetary.h
remove all remaining redundant __restrict/__inline/_Noreturn defs
2012-09-08 17:14:52 -04:00
mqueue.h
remove all remaining redundant __restrict/__inline/_Noreturn defs
2012-09-08 17:14:52 -04:00
netdb.h
restore attribute((const)) to pthread_self and errno location decls
2018-10-16 14:10:27 -04:00
nl_types.h
refactor headers, especially alltypes.h, and improve C++ ABI compat
2013-07-22 11:22:36 -04:00
paths.h
remove duplicate definition of _PATH_LASTLOG in paths.h
2013-12-03 20:34:36 -05:00
poll.h
make brace placement in public header struct definitions consistent
2016-07-03 15:02:25 -04:00
pthread.h
restore attribute((const)) to pthread_self and errno location decls
2018-10-16 14:10:27 -04:00
pty.h
fix __cplusplus extern "C" closing brace in pty.h (typo?)
2011-11-10 21:01:24 -05:00
pwd.h
fix various header namespace issues under feature-test-macro control
2016-10-20 17:20:01 -04:00
regex.h
make regoff_t and regex_t match C++ ABI
2013-07-22 14:39:59 -04:00
resolv.h
don't claim support for resolv.h APIs that aren't supported
2016-11-07 11:55:53 -05:00
sched.h
fix use of memset without declaration in sched.h cpu set macros
2017-09-28 12:57:06 -04:00
search.h
implement hcreate_r, hdestroy_r and hsearch_r
2014-04-02 18:37:45 -04:00
semaphore.h
make all objects used with atomic operations volatile
2015-03-03 22:50:02 -05:00
setjmp.h
remove macro definition of longjmp from setjmp.h
2015-04-01 20:35:03 -04:00
shadow.h
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
signal.h
add TRAP_UNK si_code to signal.h from linux v4.18
2018-12-09 22:29:07 -05:00
spawn.h
rework mechanism for posix_spawnp calling posix_spawn
2018-09-12 14:34:32 -04:00
stdalign.h
add static_assert and hide noreturn, alignas, alignof from C++
2014-08-27 02:55:54 -04:00
stdarg.h
remove legacy i386 fallback stdarg implementation and framework
2016-12-15 12:18:24 -05:00
stdbool.h
stdbool.h should define __bool_true_false_are_defined even for C++
2013-08-28 00:41:00 -04:00
stdc-predef.h
add stdc-predef.h for library-level predefined macros
2016-07-03 20:03:30 -04:00
stddef.h
add max_align_t definition for C11 and C++11
2014-08-20 17:20:14 -04:00
stdint.h
fix signedness of UINT32_MAX and UINT64_MAX at the preprocessor level
2014-12-21 02:30:29 -05:00
stdio_ext.h
stdio_ext.h needs to include stdio.h, at least to get FILE...
2012-08-24 16:16:30 -04:00
stdio.h
make FILE a complete type for pre-C11 standard profiles
2019-03-12 15:24:00 -04:00
stdlib.h
remove parameter names from public headers
2016-10-20 17:04:37 -04:00
stdnoreturn.h
add static_assert and hide noreturn, alignas, alignof from C++
2014-08-27 02:55:54 -04:00
string.h
add explicit_bzero implementation
2018-06-26 16:59:12 -04:00
strings.h
implement ffsl and ffsll functions
2014-07-31 02:38:23 -04:00
stropts.h
add isastream (obsolete STREAMS junk)
2012-05-06 09:03:19 -04:00
syscall.h
header file fixes: multiple include guard consistency and correctness
2012-06-15 21:52:53 -04:00
sysexits.h
add sysexits.h legacy header
2011-04-05 15:40:36 -04:00
syslog.h
remove hack in syslog.h that resulted in aliasing violations
2014-06-21 07:44:46 -04:00
tar.h
expose TSVTX unconditionally in tar.h
2019-03-13 10:42:57 -04:00
termios.h
default features: make musl usable without feature test macros
2012-09-07 23:13:55 -04:00
tgmath.h
math: more correct tgmath.h type cast logic
2012-12-19 10:57:54 +01:00
threads.h
remove parameter names from public headers
2016-10-20 17:04:37 -04:00
time.h
fix various header namespace issues under feature-test-macro control
2016-10-20 17:20:01 -04:00
uchar.h
uchar.h: define char16_t and char32_t for old c++
2018-07-17 22:24:03 -04:00
ucontext.h
fix signature of function accepted by makecontext
2019-04-05 17:29:00 -04:00
ulimit.h
initial check-in, version 0.5.0
2011-02-12 00:22:29 -05:00
unistd.h
fix minor namespace issue in unistd.h
2018-03-10 18:19:40 -05:00
utime.h
make brace placement in public header struct definitions consistent
2016-07-03 15:02:25 -04:00
utmp.h
add declarations for utmpname/utmpxname to appropriate headers
2016-02-12 09:58:50 -05:00
utmpx.h
fix typo in utmpx.h
2016-10-20 16:55:32 -04:00
values.h
add legacy header values.h
2013-01-04 20:36:34 +01:00
wait.h
add workaround header for wait.h remapping to sys/wait.h
2013-09-01 01:01:31 -04:00
wchar.h
make FILE a complete type for pre-C11 standard profiles
2019-03-12 15:24:00 -04:00
wctype.h
improve iswdigit macro to diagnose errors
2015-05-02 21:19:08 -04:00
wordexp.h
make brace placement in public header typedef'd structs consistent
2016-07-03 16:19:28 -04:00