CVS commit: [netbsd-9] src

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Wed Feb 22 18:49:17 UTC 2023

Modified Files:
        src/lib/libc/string [netbsd-9]: swab.c
        src/tests/lib/libc/string [netbsd-9]: t_swab.c

Log Message:
Pull up following revision(s) (requested by riastradh in ticket #1601):

        tests/lib/libc/string/t_swab.c: revision 1.3
        lib/libc/string/swab.c: revision 1.20

swab(3): Rewrite this to be understandable.

And make the tests work, and exercise all lengths up to 100.
Evidently the previous definition, presumably tightly optimized for
1980s-era compilers and CPUs, was too hard to understand, because it
was incorrectly tested for two decades and broken for years.

PR lib/57141


To generate a diff of this commit:
cvs rdiff -u -r1.18 -r1.18.48.1 src/lib/libc/string/swab.c
cvs rdiff -u -r1.2 -r1.2.44.1 src/tests/lib/libc/string/t_swab.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.