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Bruno Haible
8fb59b8fac
* doc/posix-headers/*.texi: Add info about MSVC 14. * doc/posix-functions/*.texi: Likewise. * doc/pastposix-functions/*.texi: Likewise. * doc/glibc-headers/*.texi: Likewise. * doc/glibc-functions/*.texi: Likewise.
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
@node memmem
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@subsection @code{memmem}
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@findex memmem
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Gnulib module: memmem or memmem-simple
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Both modules implement the same replacement for the @code{memmem} function
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with the memmem module providing a replacement on more platforms where
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the existing @code{memmem} function has a quadratic worst-case complexity.
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Portability problems fixed by either Gnulib module @code{memmem-simple}
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or @code{memmem}:
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@itemize
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@item
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This function is missing on some platforms:
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Mac OS X 10.5, FreeBSD 5.2.1, OpenBSD 4.0, Minix 3.1.8, AIX 4.3.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw, MSVC 14, Interix 3.5, BeOS.
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@item
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This function has reversed arguments on some older platforms:
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Linux libc 5.0.9
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@item
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This function can trigger false positives for long periodic needles on
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some platforms:
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glibc 2.12, Cygwin 1.7.7.
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@item
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This function returns incorrect values in some cases, such as when
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given an empty needle:
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glibc <= 2.0, Solaris 11 2011-11, Cygwin 1.5.x.
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@end itemize
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Performance problems fixed by Gnulib module @code{memmem}:
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@itemize
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@item
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This function has quadratic instead of linear worst-case complexity on some
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platforms:
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glibc 2.8, FreeBSD 6.2, NetBSD 5.0, AIX 5.1, Solaris 11 2011-11, Cygwin 1.5.x.
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Note for small needles the replacement may be slower.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@end itemize
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