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* m4/log1pf-ieee.m4: New file. * m4/log1pf.m4 (gl_FUNC_LOG1PF): If gl_FUNC_LOG1PF_IEEE is present, test whether log1pf works with a minus zero argument. Replace it if not. * modules/log1pf-ieee (Files): Add m4/log1pf-ieee.m4, m4/minus-zero.m4, m4/signbit.m4. (configure.ac): Invoke gl_FUNC_LOG1PF_IEEE. * doc/posix-functions/log1pf.texi: Mention the log1pf-ieee module.
29 lines
752 B
Plaintext
29 lines
752 B
Plaintext
@node log1pf
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@section @code{log1pf}
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@findex log1pf
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log1pf.html}
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Gnulib module: log1pf or log1pf-ieee
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Portability problems fixed by either Gnulib module @code{log1pf} or @code{log1pf-ieee}:
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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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Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9.
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@item
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This function returns a wrong value for the argument -1.0f on some platforms:
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IRIX 6.5.
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@end itemize
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Portability problems fixed by Gnulib module @code{log1pf-ieee}:
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@itemize
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@item
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This function has problems when the argument is minus zero on some platforms:
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OpenBSD 4.9, AIX 7.1.
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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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