qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
glibc/sysdeps
History
Joseph Myers 780257d48d Add fetestexceptflag. 
TS 18661-1 defines an fetestexceptflag function to test the exception
state saved in an fexcept_t object by fegetexceptflag.

This patch implements this function for glibc.  Almost all
architectures save exception state in such a way that it can be
directly ANDed with exception flag bits, so rather than having lots of
fetestexceptflag implementations that all do the same thing, the math/
implementation is made to use this generic logic (which is also OK in
the fallback case where FE_ALL_EXCEPT is zero).  The only architecture
that seems to need anything different is s390.

(fegetexceptflag and fesetexceptflag use abbreviated filenames
fgetexcptflg.c and fsetexcptflg.c.  Because we are no longer concerned
by 14-character filename limits, fetestexceptflag uses the obvious
filename fetestexceptflag.c.)

The NEWS entry is intended to be expanded along the lines given in
<https://sourceware.org/ml/libc-alpha/2016-08/msg00356.html> when
fegetmode and fesetmode are added.

Tested for x86_64, x86, mips64 and powerpc.

	* math/fetestexceptflag.c: New file.
	* sysdeps/s390/fpu/fetestexceptflag.c: Likewise.  Comment by
	Stefan Liebler.
	* math/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(fetestexceptflag): New function declaration.
	* manual/arith.texi (fetestexceptflag): Document function.
	* math/Versions (fetestexceptflag): New libm symbol at version
	GLIBC_2.25.
	* math/Makefile (libm-support): Add fetestexceptflag.
	(tests): Add test-fetestexceptflag.
	* math/test-fetestexceptflag.c: New file.
	* 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.
 		2016-08-29 11:47:21 +00:00
..
aarch64 Add fesetexcept: aarch64. 2016-08-16 16:16:57 +00:00
alpha Convert _Complex tangent functions to generated code 2016-08-19 16:47:31 -05:00
arm Add fesetexcept: arm. 2016-08-16 16:18:24 +00:00
generic Support for type-generic libm function implementations libm 2016-08-17 14:06:03 -05:00
gnu Define UDP_ENCAP_* from Linux 4.7 in netinet/udp.h. 2016-08-03 12:13:16 +00:00
hppa Add fesetexcept: hppa. 2016-08-16 16:19:03 +00:00
i386 Add fesetexcept. 2016-08-16 16:16:10 +00:00
ia64 Do not override objects in libc.a in other static libraries [BZ #20452] 2016-08-17 14:57:01 +02:00
ieee754 Convert _Complex tangent functions to generated code 2016-08-19 16:47:31 -05:00
init_array Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
m68k Convert _Complex sine functions to generated code 2016-08-19 16:46:41 -05:00
mach malloc: Simplify static malloc interposition [BZ #20432] 2016-08-26 23:20:41 +02:00
microblaze Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
mips Do not override objects in libc.a in other static libraries [BZ #20452] 2016-08-17 14:57:01 +02:00
nacl Add fetestexceptflag. 2016-08-29 11:47:21 +00:00
nios2 elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
nptl malloc: Simplify static malloc interposition [BZ #20432] 2016-08-26 23:20:41 +02:00
posix Fix incorrect double-checked locking related to _res_hconf.initialized. 2016-08-18 20:53:37 +02:00
powerpc Add fesetexcept: powerpc. 2016-08-16 16:22:12 +00:00
pthread Revert "aio: fix newp->running data race" 2016-05-04 15:52:30 +02:00
s390 Add fetestexceptflag. 2016-08-29 11:47:21 +00:00
sh Add fesetexcept: sh. 2016-08-16 16:25:10 +00:00
sparc Add fesetexcept: sparc. 2016-08-16 16:25:57 +00:00
tile Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
unix Add fetestexceptflag. 2016-08-29 11:47:21 +00:00
wordsize-32 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wordsize-64 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
x86 X86: Change bit_YMM_state to (1 << 2) 2016-08-19 13:32:34 -07:00
x86_64 X86-64: Correct CFA in _dl_runtime_resolve 2016-08-26 08:57:54 -07:00