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69a01461ee
glibc/sysdeps/unix/sysv/linux/mips
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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 hurd: Fix includability of <hurd/signal.h> in all standards 2018-03-05 22:50:29 +01:00
mips32 Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
mips64 Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
sys Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
____longjmp_chk.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
_test_and_set.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
brk.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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 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. 2018-01-01 00:32:25 +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
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. 2018-01-01 00:32:25 +00:00
getsysstats.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
init-first.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
kernel_rt_sigframe.h Rename struct ucontext tag (bug 21457). 2017-06-26 22:03:58 +00:00
kernel_sigaction.h linux: Consolidate sigaction implementation 2018-04-05 17:09:50 -03:00
kernel_stat.h Allow [f]statfs64 to alias [f]statfs 2016-11-22 09:59:12 -08:00
kernel_termios.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
kernel-features.h Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libc-abis Add support for MIPS O32 FPXX and .MIPS.abiflags 2014-12-31 21:09:21 +00:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
makecontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Makefile Remove abi-*-options compiler flags 2017-08-28 17:16:53 +02:00
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. 2018-01-01 00:32:25 +00:00
register-dump.h 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
setrlimit64.c 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
sigcontextinfo.h Remove unused frame.h header, sigcontextinfo.h macros. 2018-03-22 16:40:51 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
syscalls.list Consolidate Linux send implementation 2017-03-09 15:22:06 +01:00
ucontext_i.sym Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
ustat.c Deprecate ustat syscall interface 2018-05-02 08:43:31 -03:00
Versions VDSO support for MIPS 2016-04-12 11:05:13 +01:00
vfork.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
xstatconv.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00