Vector variants of the new C23 log10p1 routines.

Note: Benchmark inputs for log10p1(f) are identical to log1p(f)

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

Vector variants of the new C23 log2p1 routines.

Note: Benchmark inputs for log2p1(f) are identical to log1p(f).

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

Vector variants of the new C23 exp2m1 & exp10m1 routines.

Note: Benchmark inputs for exp2m1 & exp10m1 are identical to exp2 & exp10
respectively, this also includes the floating point variations.

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

Add initial inputs for asinpi(f), acospi(f), atanpi(f) and atan2pi(f) based
on existing asin/acos/atan inputs.

Benchtests now works on the new libmvec function.

Reviewed-by: Yury Khrustalev <yury.khrustalev@arm.com>

This fixes an AArch64 build failure:

python3 -B ../sysdeps/aarch64/fpu/scripts/bench_libmvec_advsimd.py bench-float-advsimd-cospi > …/benchtests/bench-float-advsimd-cospi.c
Traceback (most recent call last):
  File "…/sysdeps/aarch64/fpu/scripts/bench_libmvec_advsimd.py", line 106, in <module>
    main(sys.argv[1])
    ~~~~^^^^^^^^^^^^^
  File "…/sysdeps/aarch64/fpu/scripts/bench_libmvec_advsimd.py", line 81, in main
    with open(f"../benchtests/libmvec/{input_filename}") as f:
         ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

FileNotFoundError: [Errno 2] No such file or directory: '../benchtests/libmvec/cospif-inputs'

This allows other targets to use the same inputs for their own libmvec
microbenchmarks without having to duplicate them in their own
subdirectory.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>