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Joseph Myers 90f0ac10a7 Add fmaximum, fminimum functions 
C2X adds new <math.h> functions for floating-point maximum and
minimum, corresponding to the new operations that were added in IEEE
754-2019 because of concerns about the old operations not being
associative in the presence of signaling NaNs.  fmaximum and fminimum
handle NaNs like most <math.h> functions (any NaN argument means the
result is a quiet NaN).  fmaximum_num and fminimum_num handle both
quiet and signaling NaNs the way fmax and fmin handle quiet NaNs (if
one argument is a number and the other is a NaN, return the number),
but still raise "invalid" for a signaling NaN argument, making them
exceptions to the normal rule that a function with a floating-point
result raising "invalid" also returns a quiet NaN.  fmaximum_mag,
fminimum_mag, fmaximum_mag_num and fminimum_mag_num are corresponding
functions returning the argument with greatest or least absolute
value.  All these functions also treat +0 as greater than -0.  There
are also corresponding <tgmath.h> type-generic macros.

Add these functions to glibc.  The implementations use type-generic
templates based on those for fmax, fmin, fmaxmag and fminmag, and test
inputs are based on those for those functions with appropriate
adjustments to the expected results.  The RISC-V maintainers might
wish to add optimized versions of fmaximum_num and fminimum_num (for
float and double), since RISC-V (F extension version 2.2 and later)
provides instructions corresponding to those functions - though it
might be at least as useful to add architecture-independent built-in
functions to GCC and teach the RISC-V back end to expand those
functions inline, which is what you generally want for functions that
can be implemented with a single instruction.

Tested for x86_64 and x86, and with build-many-glibcs.py.
2021-09-28 23:31:35 +00:00
..
alpha
alphaev6/fpu
alphaev67/fpu
bits Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) 2021-07-09 15:10:35 -07:00
fpu
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
____longjmp_chk.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
a.out.h Break lines before not after operators, batch 4. 2019-03-07 20:20:25 +00:00
adjtime.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
adjtimex.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
aio_cancel.c Linux: Move aio_cancel, aio_cancel64 into libc 2021-06-25 11:48:46 +02:00
arch-syscall.h Update syscall lists for Linux 5.14 2021-09-08 12:42:06 +00:00
brk.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
c++-types.data
clone.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
configure
configure.ac
dl-auxv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-support.c
dl-sysdep.c
errlist-compat.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fraiseexcpt.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fstatfs.c linux: Consolidate fstatfs implementations 2021-02-11 07:58:31 -03:00
fstatfs64.c linux: Consolidate fstatfs implementations 2021-02-11 07:58:31 -03:00
fxstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fxstatat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getclktck.c
getcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getdents.c Consolidate Linux getdents{64} implementation 2018-04-19 08:49:52 -03:00
getdents64.c Consolidate Linux getdents{64} implementation 2018-04-19 08:49:52 -03:00
getegid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
geteuid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gethostname.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
getppid.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
getrlimit64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gettimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
glob-lstat-compat.c posix: Add compat glob symbol to not follow dangling symbols 2017-09-25 18:04:16 -07:00
globfree.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ieee_get_fp_control.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ieee_set_fp_control.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
Implies
ioperm.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ipc_priv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel-features.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
kernel_sigaction.h alpha: Use Linux generic sigaction implementation 2018-12-18 19:52:21 -02:00
kernel_stat.h alpha: Remove anonymous union in struct stat [BZ #27042] 2020-12-21 09:09:43 -03:00
kernel_sysinfo.h
kernel_termios.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ld.abilist ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] 2020-02-15 11:01:23 +01:00
libanl.abilist resolv: Move libanl into libc (if libpthread is in libc) 2021-07-02 11:45:00 +02:00
libBrokenLocale.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libc.abilist Move malloc_{g,s}et_state to libc_malloc_debug 2021-07-22 18:38:10 +05:30
libc_malloc_debug.abilist Move malloc_{g,s}et_state to libc_malloc_debug 2021-07-22 18:38:10 +05:30
libcrypt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libdl.abilist dlfcn: Move dlopen into libc 2021-06-03 08:26:04 +02:00
libm.abilist Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
libnsl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libpthread.abilist nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
libresolv.abilist resolv: Move res_query functions into libc 2021-07-19 07:56:57 +02:00
librt-compat.c Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
librt.abilist Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
libthread_db.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libutil.abilist login: Move libutil into libc 2021-06-30 08:43:37 +02:00
localplt.data mtrace: Wean away from malloc hooks 2021-07-22 18:38:06 +05:30
lxstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
makecontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
nldbl-abi.h
oldglob.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_adjtime.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_getitimer.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_getrusage.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_gettimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_setitimer.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_settimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_utimes.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
osf_wait4.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
pipe.S
register-dump.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
rt_sigaction.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
select.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setfpucw.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setrlimit64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
settimeofday.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
shlib-versions
sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sizes.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
statfs.c linux: Consolidate statfs implementations 2021-02-11 08:00:11 -03:00
statfs64.c linux: Consolidate statfs implementations 2021-02-11 08:00:11 -03:00
swapcontext.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
syscall.S Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
syscalls.list linux: Consolidate Linux setsockopt implementation 2021-07-06 11:45:35 -03:00
sysconf.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sysdep.h Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
timer_t_was_int_compat.h Linux: Define TIMER_T_WAS_INT_COMPAT in kernel-posix-timers.h 2021-06-28 09:51:00 +02:00
ucontext-offsets.sym Fix mcontext_t sigcontext namespace (bug 21457). 2017-08-30 22:02:04 +00:00
Versions Linux: Move timer_settime, __timer_settime64 from librt to libc 2021-06-28 09:51:01 +02:00
vfork.S Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
wait4.c alpha: Provide wait4 for static library [BZ #27150] 2021-01-05 11:22:25 -03:00
wordexp.c
xstat64.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatconv.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatconv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatver.h Remove mknod wrapper functions, move them to symbols 2020-10-09 17:02:06 -03:00