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Pierre Blanchard 2ff2565df7 AArch64: Implement AdvSIMD and SVE powr(f) routines 
Vector variants of the new C23 powr routines.

These provide same maximum error error as pow by virtue of
relying on shared approximation techniques and sources.

Note: Benchmark inputs for powr(f) are identical to pow(f).

Performance gain over pow on V1 with GCC@15:
- SVE powr: 10-12% on subnormal x, 12-13% on x < 0.
- SVE powrf: 15% on all x < 0.
- AdvSIMD powr: for x < 0, 40% if x subnormal, 60% otherwise.
- AdvSIMD powrf: 4% on x subnormals or x < 0.
2026-04-20 13:01:25 -03:00
..
types
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atomic_wide_counter.h
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byteswap.h
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confname.h
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dirent_ext.h
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dirent.h
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dl_find_object.h
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dlfcn.h
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elfclass.h
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endian.h
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environments.h
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errno.h
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fcntl.h
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fenv.h
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floatn-common.h
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floatn.h
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flt-eval-method.h
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fp-fast.h
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fp-logb.h
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hwcap.h
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in.h
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indirect-return.h
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ioctl-types.h
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ioctls.h
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ipc.h
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ipctypes.h
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iscanonical.h
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libc-header-start.h
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libm-simd-decl-stubs.h
AArch64: Implement AdvSIMD and SVE powr(f) routines
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link_lavcurrent.h
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link.h
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local_lim.h
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long-double.h
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math-vector.h
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mathdef.h
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mman_ext.h
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mman.h
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mqueue.h
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netdb.h
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param.h
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poll.h
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posix_opt.h
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pthreadtypes.h
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resource.h
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sched.h
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select.h
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sem.h
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setjmp.h
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shm.h
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sigaction.h
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sigcontext.h
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siginfo-consts.h
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signal_ext.h
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sigstack.h
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ss_flags.h
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stat.h
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statfs.h
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stdint-least.h
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stdint-uintn.h
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stdlib-bsearch.h
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syslog-path.h
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termios.h
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time64.h
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time.h
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timesize.h
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typesizes.h
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uintn-identity.h
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uio_lim.h
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unistd_ext.h
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utmp.h
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utsname.h
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waitflags.h
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wchar.h
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wordsize.h
login: structs utmp, utmpx, lastlog _TIME_BITS independence (bug 30701)
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