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eb3c12c784
glibc/sysdeps
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Joseph Myers eb3c12c784 Add setpayload, setpayloadf, setpayloadl. 
TS 18661-1 defines functions for manipulating the payloads of NaNs.
This patch implements the setpayload functions for glibc; these set a
number (pointed to by a function argument) to a quiet NaN with the
given payload, or to +0 if the given payload is not valid.  The
implementations are structured to allow the substance of the
implementation to be shared with the setpayloadsig functions when
those are added.

The semantics in the TS are not entirely clear in the case where the
payload passed to the function is zero (see discussion on the WG14
reflector last month).  This patch implements what seems the most
sensible interpretation, that -0 is never valid to give as the
payload, but +0 is valid in the case where the kind of NaN being
generated has its high mantissa bit set so payload 0 is actually
possible in such a NaN.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(setpayload): New declaration.
	* math/Versions (setpayload): New libm symbol at version
	GLIBC_2.25.
	(setpayloadf): Likewise.
	(setpayloadl): Likewise.
	* math/Makefile (libm-calls): Add s_setpayloadF.
	* math/libm-test.inc (struct test_Ffp_b1_data): Rename to struct
	test_Ff_b1_data.
	(RUN_TEST_Ff_b1): New macro.
	(RUN_TEST_LOOP_Ff_b1): Likewise.
	(canonicalize_test_data): Update type.
	(setpayload_test_data): New array.
	(setpayload_test): New function.
	(main): Call setpayload_test.
	* manual/arith.texi (FP Bit Twiddling): Document setpayload,
	setpayloadf and setpayloadl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_setpayload.c: New file.
	* sysdeps/ieee754/dbl-64/s_setpayload_main.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c:
	Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-setpayload.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	setpayload.
	(CFLAGS-nldbl-setpayload.c): New variable.
	* 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.
2016-11-19 00:16:28 +00:00
..
aarch64 Regenerate ULPs for aarch64 2016-11-10 16:52:35 +05:30
alpha Fix alpha sqrt fegetenv namespace (bug 20768). 2016-11-04 17:19:13 +00:00
arm nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
generic Refactor some libm type-generic macros. 2016-11-10 21:41:56 +00:00
gnu Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
hppa nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
i386 Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
ia64 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
ieee754 Add setpayload, setpayloadf, setpayloadl. 2016-11-19 00:16:28 +00:00
init_array
m68k nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
mach Fix hurd __access_noerrno implementation. 2016-11-18 16:49:08 -02:00
microblaze nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
mips MIPS: Add `.insn' to ensure a text label is defined as code not data 2016-11-18 12:44:04 +00:00
nacl Add setpayload, setpayloadf, setpayloadl. 2016-11-19 00:16:28 +00:00
nios2 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
nptl Installed-header hygiene (BZ#20366): time.h types. 2016-09-23 08:43:56 -04:00
posix hurd: fix fcntl visibility 2016-09-18 23:48:55 +02:00
powerpc Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
pthread Installed-header hygiene (BZ#20366): time.h types. 2016-09-23 08:43:56 -04:00
s390 s390x: Add hidden definition for __sigsetjmp 2016-11-15 15:51:01 +01:00
sh nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
sparc nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
tile tile: create new math-tests.h header 2016-11-18 13:34:47 -05:00
unix Add setpayload, setpayloadf, setpayloadl. 2016-11-19 00:16:28 +00:00
wordsize-32 Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
wordsize-64 Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
x86 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
x86_64 Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00