qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
glibc/sysdeps/unix/sysv/linux/aarch64
History
Joseph Myers 69a01461ee Add narrowing multiply functions. 
This patch adds the narrowing multiply functions from TS 18661-1 to
glibc's libm: fmul, fmull, dmull, f32mulf64, f32mulf32x, f32xmulf64
for all configurations; f32mulf64x, f32mulf128, f64mulf64x,
f64mulf128, f32xmulf64x, f32xmulf128, f64xmulf128 for configurations
with _Float64x and _Float128; __nldbl_dmull for ldbl-opt.

The changes are mostly essentially the same as for the narrowing add
functions, so the description of those generally applies to this patch
as well.  f32xmulf64 for i386 cannot use precision control as used for
add and subtract, because that would result in double rounding for
subnormal results, so that uses round-to-odd with long double
intermediate result instead.  The soft-fp support involves adding a
new FP_TRUNC_COOKED since soft-fp multiplication uses cooked inputs
and outputs.

Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft
float) and powerpc, and with build-many-glibcs.py.

	* math/Makefile (libm-narrow-fns): Add mul.
	(libm-test-funcs-narrow): Likewise.
	* math/Versions (GLIBC_2.28): Add narrowing multiply functions.
	* math/bits/mathcalls-narrow.h (mul): Use __MATHCALL_NARROW.
	* math/gen-auto-libm-tests.c (test_functions): Add mul.
	* math/math-narrow.h (CHECK_NARROW_MUL): New macro.
	(NARROW_MUL_ROUND_TO_ODD): Likewise.
	(NARROW_MUL_TRIVIAL): Likewise.
	* soft-fp/op-common.h (FP_TRUNC_COOKED): Likewise.
	* sysdeps/ieee754/float128/float128_private.h (__fmull): New
	macro.
	(__dmull): Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fmul and
	dmul.
	(CFLAGS-nldbl-dmul.c): New variable.
	(CFLAGS-nldbl-fmul.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
	__nldbl_dmull.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dmull): New
	prototype.
	* manual/arith.texi (Misc FP Arithmetic): Document fmul, fmull,
	dmull, fMmulfN, fMmulfNx, fMxmulfN and fMxmulfNx.
	* math/auto-libm-test-in: Add tests of mul.
	* math/auto-libm-test-out-narrow-mul: New generated file.
	* math/libm-test-narrow-mul.inc: New file.
	* sysdeps/i386/fpu/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmul.c: Likewise.
	* sysdeps/ieee754/float128/s_f32mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-dmul.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_dmull.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmull.c: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Update.
	* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
	* 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/riscv/rv64/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/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 		2018-05-16 00:05:28 +00:00
..
bits Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM. 2018-04-20 16:36:00 +00:00
sys Add PTRACE_SECCOMP_GET_METADATA from Linux 4.16 to sys/ptrace.h. 2018-04-24 12:11:35 +00:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
Makefile Remove abi-*-options compiler flags 2017-08-28 17:16:53 +02:00
Versions Revert {send,sendm,recv,recvm}msg conformance changes 2016-06-10 11:58:16 -03:00
__read_tp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
c++-types.data AArch64: Consolidate nptl/ subdirectories under linux/... 2014-06-26 09:29:24 -07:00
clone.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
configure LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
configure.ac Refactor handling of /lib64 etc. cases, move out of sysdeps/gnu/configure.ac. 2014-07-17 14:35:48 +00:00
cpu-features.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
cpu-features.h IFUNC for Cavium ThunderX2 2018-02-22 08:38:47 -08:00
dl-cache.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-procinfo.c Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM. 2018-04-20 16:36:00 +00:00
dl-procinfo.h aarch64: make HWCAP updates less error prone 2018-01-16 18:50:34 +00:00
dl-static.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
getcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
init-first.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ioctl.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ipc_priv.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel-features.h Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
kernel_rt_sigframe.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ld.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
ldconfig.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ldsodefs.h Remove tilegx port. 2018-04-27 19:11:24 +00:00
libBrokenLocale.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libanl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libc-__read_tp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-start.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libcrypt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libdl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libm.abilist Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
libnsl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libpthread.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libresolv.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
librt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libthread_db.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libutil.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
localplt.data ld.so: Introduce struct dl_exception 2017-08-10 16:54:57 +02:00
makecontext.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
profil-counter.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
pt-vfork.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
readelflib.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
sigaction.c linux: Consolidate sigaction implementation 2018-04-05 17:09:50 -03:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscall.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysconf.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysdep.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ucontext-internal.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ucontext_i.sym aarch64: Revert the change of the __reserved member of mcontext_t 2018-01-24 11:53:30 +00:00
vfork.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00