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f8e8b8ed9f
TS 18661-1 defines functions for manipulating the payloads of NaNs. This patch implements the getpayload functions for glibc; these extract the NaN payload (from an argument passed as a pointer, for which corresponding libm-test support is added) and return it in the same floating-point type. The return value of these functions is unspecified for non-NaN arguments; the patch does the simplest thing to implement, which is that the functions do not check whether the argument is a NaN and just treat the relevant bits of the representation as a payload regardless. A conversion from integer to floating-point is used to produce the required return value, except in the ldbl-128 case; as 128-bit integers are not supported for all configurations using ldbl-128, the code constructs the required floating-point representation of the return value directly instead. Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (getpayload): New declaration. * math/Versions (getpayload): New libm symbol at version GLIBC_2.25. (getpayloadf): Likewise. (getpayloadl): Likewise. * math/Makefile (libm-calls): Add s_getpayloadF. * math/libm-test.inc: Include <nan-high-order-bit.h>. (struct test_f_f_data): Add comment. (RUN_TEST_fp_f): New macro. (RUN_TEST_LOOP_fp_f): Likewise. (getpayload_test_data): New array. (getpayload_test): New function. (main): Call getpayload_test. * math/gen-libm-test.pl (parse_args): Handle 'p' in argument descriptor. * manual/arith.texi (FP Bit Twiddling): Document getpayload, getpayloadf and getpayloadl. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/ieee754/dbl-64/s_getpayload.c: New file. * sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c: Likewise. * sysdeps/ieee754/flt-32/s_getpayloadf.c: Likewise. * sysdeps/ieee754/ldbl-128/s_getpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_getpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_getpayloadl.c: Likewise. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise. |
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| .. | ||
| bits | ||
| _exit.c | ||
| access.c | ||
| backtrace.c | ||
| brk.c | ||
| chdir.c | ||
| check_fds.c | ||
| chmod.c | ||
| clock_getres.c | ||
| clock_gettime.c | ||
| clock.c | ||
| close.c | ||
| configure | ||
| configure.ac | ||
| createthread.c | ||
| dl-fileid.h | ||
| dl-map-segments.h | ||
| dl-osinfo.h | ||
| dl-sysdep-open.h | ||
| dl-sysdep.c | ||
| dl-sysdep.h | ||
| dl-unmap-segments.h | ||
| dl-writev.h | ||
| dup2.c | ||
| dup.c | ||
| entry.h | ||
| errnos.awk | ||
| euidaccess.c | ||
| exit-thread.h | ||
| fchdir.c | ||
| fchmod.c | ||
| fdatasync.c | ||
| fdopendir.c | ||
| fork.c | ||
| fsync.c | ||
| ftruncate64.c | ||
| ftruncate.c | ||
| futex-internal.h | ||
| fxstat64.c | ||
| fxstat.c | ||
| getcwd.c | ||
| getdents64.c | ||
| getdents.c | ||
| getdtsz.c | ||
| gethostname.c | ||
| getpagesize.c | ||
| getpid.c | ||
| getsysstats.c | ||
| gettimeofday.c | ||
| glob64.c | ||
| glob.c | ||
| ifaddrs.c | ||
| Implies | ||
| init-first.c | ||
| iofdopen.c | ||
| irt.sed | ||
| isatty.c | ||
| kernel-features.h | ||
| ld.abilist | ||
| ldsodefs.h | ||
| libanl.abilist | ||
| libBrokenLocale.abilist | ||
| libc-start.c | ||
| libcrypt.abilist | ||
| libdl.abilist | ||
| libm.abilist | ||
| libpthread.abilist | ||
| libresolv.abilist | ||
| librt.abilist | ||
| libutil.abilist | ||
| link.c | ||
| lll_timedlock_wait.c | ||
| lll_timedwait_tid.c | ||
| lowlevellock-futex.h | ||
| lowlevellock.h | ||
| lseek64.c | ||
| lseek.c | ||
| lxstat64.c | ||
| lxstat.c | ||
| Makefile | ||
| mkdir.c | ||
| mmap64.c | ||
| mmap.c | ||
| mprotect.c | ||
| munmap.c | ||
| nacl_interface_ext_supply.c | ||
| nacl_interface_query.c | ||
| nacl-after-link.sh | ||
| nacl-interface-list.h | ||
| nacl-interface-table.c | ||
| nacl-interfaces.c | ||
| nacl-interfaces.h | ||
| nacl-interfaces.mk.in | ||
| nacl-test-wrapper.sh | ||
| nanosleep.c | ||
| open64.c | ||
| open.c | ||
| preconfigure | ||
| profil.c | ||
| pthread_condattr_setclock.c | ||
| pthread-pids.h | ||
| read.c | ||
| readdir64_r.c | ||
| readdir64.c | ||
| readdir_r.c | ||
| readdir.c | ||
| readlink.c | ||
| rename.c | ||
| rmdir.c | ||
| sched_yield.c | ||
| shlib-versions | ||
| sigaction.c | ||
| sprofil.c | ||
| start.c | ||
| Subdirs | ||
| symlink.c | ||
| tls.h | ||
| truncate64.c | ||
| truncate.c | ||
| uname-values.h | ||
| unlink.c | ||
| utimes.c | ||
| Versions | ||
| write.c | ||
| xstat64.c | ||
| xstat.c | ||
| xstatconv.c | ||
| xstatconv.h | ||