AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-12-02 01:40:07 +00:00
Code Issues Packages Projects Releases Wiki Activity
5e9d98a3d9
glibc/sysdeps/unix/sysv/linux/mips
History
Joseph Myers 5e9d98a3d9 Add totalorder, totalorderf, totalorderl. 
TS 18661-1 defines totalorder functions implementing the totalOrder
comparison operation from IEEE 754-2008.  This patch implements these
functions for glibc, including the type-generic macro in <tgmath.h>.
(The totalordermag functions will be added in a separate patch.)

The description of the totalOrder operation is complicated.  However,
for IEEE interchange binary formats and the preferred quiet NaN
convention, what that complicated description means is that you
interpret the representation as a sign-magnitude integer (with -0
coming before +0) and do a <= comparison on that interpretation.  For
finite values and infinities the ordering of the sign-magnitude
integers is just the same as the ordering of floating-point values, so
this extends that to all representations.  (Different representations
of the same floating-point value - which includes same quantum in the
decimal case - must still be considered equal by this operation, but
that issue doesn't arise for IEEE interchange binary formats.)  So the
complications are:

* When MIPS quiet NaN conventions are in use, the representation of
  NaNs needs adjusting before making such an integer comparison.  This
  patch does this adjustment only when both arguments are NaNs, as
  there's no need for it if only one is a NaN, and as long as both are
  NaNs you can just flip the relevant bits without any problems from
  this turning a NaN into an infinity.

* For the m68k version of ldbl-96, where the high mantissa bit is
  "don't care" for infinities and NaNs, representations where it
  differs must compare the same.  Note: although the testcase for this
  compiles, I have not actually tested on m68k.

* For ldbl-128ibm, the low part must be ignored when the high part is
  NaN, and low parts of +0 and -0 must be considered the same whatever
  the high part.

The new tests in libm-test.inc are the first tests there specifying
particular payloads for input NaNs.  Separate tests are also added for
the ldbl-96 and ldbl-128ibm special cases where there are different
representations of the same value that must compare equal (which can't
be covered in libm-test.inc as that only specifies values, not
representations).

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(totalorder): New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (totalorder):
	New macro.
	* math/Versions (totalorder): New libm symbol at version
	GLIBC_2.25.
	(totalorderf): Likewise.
	(totalorderl): Likewise.
	* math/Makefile (libm-calls): Add s_totalorderF.
	* math/gen-libm-test.pl (parse_args): Escape quotes in test name
	string.
	* math/libm-test.inc (PAYLOAD_DIG): New macro.
	(qnan_value_pl): Likewise.
	(snan_value_pl): Likewise.
	(qnan_value): Define using qnan_value_pl.
	(snan_value): Define using snan_value_pl.
	(struct test_ff_i_data): Add comment about which tests use this
	structure.
	(RUN_TEST_ff_b): New macro.
	(RUN_TEST_LOOP_ff_b): Likewise.
	(totalorder_test_data): New array.
	(totalorder_test): New function.
	(main): Call totalorder_test.
	* math/test-tgmath.c (NCALLS): Increase to 122.
	(F(compile_test)): Call totalorder.
	(F(totalorder)): New function.
	* manual/arith.texi (FP Comparison Functions): Document
	totalorder, totalorderf and totalorderl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_totalorder.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Likewise.
	* sysdeps/ieee754/flt-32/s_totalorderf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-totalorder.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	totalorder.
	(CFLAGS-nldbl-totalorder.c): New variable.
	* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c: New
	file.
	* sysdeps/ieee754/ldbl-128ibm/Makefile [$(subdir) = math] (tests):
	Add test-totalorderl-ldbl-128ibm.
	* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c: New file.
	* sysdeps/ieee754/ldbl-96/Makefile [$(subdir) = math] (tests): Add
	test-totalorderl-ldbl-96.
	* 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.
2016-10-12 01:20:30 +00:00
..
bits Installed-header hygiene (BZ#20366): stack_t. 2016-09-23 08:43:56 -04:00
mips32 Add totalorder, totalorderf, totalorderl. 2016-10-12 01:20:30 +00:00
mips64 Add totalorder, totalorderf, totalorderl. 2016-10-12 01:20:30 +00:00
sys Installed-header hygiene (BZ#20366): stack_t. 2016-09-23 08:43:56 -04:00
____longjmp_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
_test_and_set.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
arch-fork.h Split arch-fork.h from fork.h 2014-05-16 11:17:41 -07:00
brk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
clone.S Fix clone (CLONE_VM) pid/tid reset (BZ#19957) 2016-04-29 18:19:30 -03:00
configure MIPS: Set the required Linux kernel version to 4.5.0 for 2008 NaN 2016-01-25 00:19:27 +00:00
configure.ac MIPS: Set the required Linux kernel version to 4.5.0 for 2008 NaN 2016-01-25 00:19:27 +00:00
dl-cache.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-static.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getcontext.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getmsg.c Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
getrlimit64.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
init-first.c VDSO support for MIPS 2016-04-12 11:05:13 +01:00
ipc_priv.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_rt_sigframe.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_sigaction.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_stat.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_termios.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
kernel-features.h Remove __ASSUME_OFF_DIFF_OFF64 definition 2016-07-08 14:28:08 -03:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
libc-abis Add support for MIPS O32 FPXX and .MIPS.abiflags 2014-12-31 21:09:21 +00:00
libc-vdso.h VDSO support for MIPS 2016-04-12 11:05:13 +01:00
makecontext.S mips: terminate the FDE before the return trampoline in makecontext 2016-03-09 18:48:18 +01:00
Makefile VDSO support for MIPS 2016-04-12 11:05:13 +01:00
pipe.S Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
profil-counter.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
pt-vfork.S MIPS: Consolidate NPTL/non versions of vfork 2014-06-27 11:18:10 -07:00
putmsg.c Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
readelflib.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
setrlimit64.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
sigaction.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
syscalls.list Adjust kernel-features.h defaults for recvmsg and sendmsg 2016-05-25 17:27:57 -03:00
sysdep-cancel.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ucontext_i.sym Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
ustat.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Versions VDSO support for MIPS 2016-04-12 11:05:13 +01:00
vfork.S MIPS, SPARC: more fixes to the vfork aliases in libpthread.so 2016-06-27 09:59:37 +02:00
xstatconv.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00