Joseph Myers f8e8b8ed9f Add getpayload, getpayloadf, getpayloadl. ... 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.		2016-10-19 01:49:09 +00:00
..
bits	Installed-header hygiene (BZ#20366): stack_t.	2016-09-23 08:43:56 -04:00
sparc32	Add getpayload, getpayloadf, getpayloadl.	2016-10-19 01:49:09 +00:00
sparc64	Add getpayload, getpayloadf, getpayloadl.	2016-10-19 01:49:09 +00:00
sys	Installed-header hygiene (BZ#20366): stack_t.	2016-09-23 08:43:56 -04:00
a.out.h	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
aio_cancel.c	Move remaining SPARC code out of nptl/.	2014-06-20 17:13:47 -07:00
arch-fork.h	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
configure	Move architecture cases out of sysdeps/unix/sysv/linux/configure.ac.	2014-06-24 20:53:03 +00:00
configure.ac	Move architecture cases out of sysdeps/unix/sysv/linux/configure.ac.	2014-06-24 20:53:03 +00:00
dl-cache.h	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
getshmlba.c	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
getsysstats.c	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
Implies	NPTL is no longer an add-on!	2014-07-07 09:29:06 -07:00
kernel-features.h	Remove __ASSUME_FUTEX_LOCK_PI	2016-06-13 08:36:34 -03:00
kernel_termios.h	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
ldd-rewrite.sed	Update.	1999-07-14 15:21:35 +00:00
lowlevellock.h	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
Makefile	Do not override objects in libc.a in other static libraries [BZ #20452]	2016-08-17 14:57:01 +02:00
pt-vfork.S	Consolidate sparc clone, fork, and vfork implementations.	2014-06-13 14:47:53 -07:00
readelflib.c	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
rt-sysdep.c	* shlib-versions: Use sparc64.*- for CPU patterns.	2006-03-06 01:34:09 +00:00
syscalls.list	Remove __libc_waitpid function name.	2014-11-07 01:27:16 +00:00
sysdep.c	* shlib-versions: Use sparc64.*- for CPU patterns.	2006-03-06 01:34:09 +00:00
sysdep.h	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
system.c	Update copyright dates with scripts/update-copyrights.	2016-01-04 16:05:18 +00:00
Versions	Revert {send,sendm,recv,recvm}msg conformance changes	2016-06-10 11:58:16 -03:00