strings.h: Spruce up for POSIX 2024.

1. Add ffsl, ffsll.
2. Hide bcmp, bcopy, bzero, index, rindex for POSIX>=2024.
3. Expose ffs only for NetBSD or POSIX>=2008 with XSI option.
4. Hide popcount* Ne

strings.h: Spruce up for POSIX 2024.

1. Add ffsl, ffsll.
2. Hide bcmp, bcopy, bzero, index, rindex for POSIX>=2024.
3. Expose ffs only for NetBSD or POSIX>=2008 with XSI option.
4. Hide popcount* NetBSD extensions for any POSIX.
5. Sprinkle __constfunc on ffs*.

Add tests for ffs/ffsl/ffsll in tests/include/sys/t_bitops next to
ffs32/ffs64 for convenience.

XXX Still missing strcasecmp_l, strncasecmp_l, and locale_t.

PR lib/58802: missing ffsl(), ffsll() functions from POSIX 2024

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t_bitops: Show the bad results on failure.

Avoid undefined behavior in an ATF test: t_bitops

Do not change the signedness bit with a left shift operation.
Switch to unsigned integer to prevent this.

t_bitops.c:189:9, left shift of 1 by 31 p

Avoid undefined behavior in an ATF test: t_bitops

Do not change the signedness bit with a left shift operation.
Switch to unsigned integer to prevent this.

t_bitops.c:189:9, left shift of 1 by 31 places cannot be represented in type 'int'

Detected with micro-UBSan in the user mode.

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one more white space -> tab.

Rewrite ilog2's test. PR lib/49745.
- Reorganize ilog2_basic to ilog2_32bit, ilog2_64bit and ilog2_const.
ilog2_const is compile-time test for __builtin_constant_p() part of
current ilog2() impl

Rewrite ilog2's test. PR lib/49745.
- Reorganize ilog2_basic to ilog2_32bit, ilog2_64bit and ilog2_const.
ilog2_const is compile-time test for __builtin_constant_p() part of
current ilog2() implementation.
- Remove fully meaningless ilog2_log2. So this part of PR misc/44767
is no longer present.

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white space -> tab.

use __BITMAP_TYPE

Move the bitmap(3) test to the "right" place. Note it in bitops(3). Xrefs.

No need to keep on trying when this fails in the expected manner. We
really don't need to have 32k failures.


OK jruoho@

remove stray underscore.

disable test on the vax until we fix it.

Add expected failures for Qemu.

Remove some cruft that is no longer needed.

Remove Xfails that are related to the infamous qemu/amd64 floating point
bugs. It appears to be quite difficult to identify the exact Qemu version
and setup. These do not fail on the TNF's qemu/amd64

Remove Xfails that are related to the infamous qemu/amd64 floating point
bugs. It appears to be quite difficult to identify the exact Qemu version
and setup. These do not fail on the TNF's qemu/amd64 setup, which can be
taken as a reference point for expected failures.

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Improve the QEMU/amd64 detection.

Add missing __RCSID(3).

Do not skip the QEMU bugs but instead mark these as expected failures.

Bluntly skip the tests that fail under QEMU. XXX: system(3) is used for this?

wnCVS: ----------------------------------------------------------------------

Even these naive test cases caught one (QEMU?) bug; comment PR # 44767.

Add also a basic, naive, test for fast_divide32(3).

Add some naive test cases for the ffs32(3) family of functions.

Add a simple test file for <sys/bitops.h>. For now, only ilog2(3) is tested.