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* m4/hypotf-ieee.m4: New file. * m4/hypotf.m4 (gl_FUNC_HYPOTF): If gl_FUNC_HYPOTF_IEEE is present, test whether hypotf works with mixed NaN and Infinity arguments. Replace it if not. * modules/hypotf-ieee (Files): Add m4/hypotf-ieee.m4. (Depends-on): Add hypot-ieee. (configure.ac): Invoke gl_FUNC_HYPOTF_IEEE. * doc/posix-functions/hypotf.texi: Mention the hypotf-ieee module.
30 lines
771 B
Plaintext
30 lines
771 B
Plaintext
@node hypotf
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@section @code{hypotf}
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@findex hypotf
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/hypotf.html}
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Gnulib module: hypotf or hypotf-ieee
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Portability problems fixed by either Gnulib module @code{hypotf} or @code{hypotf-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 produces wrong values on some platforms:
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NetBSD 5.1, OpenBSD 4.9.
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@end itemize
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Portability problems fixed by Gnulib module @code{hypot-ieee}:
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@itemize
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@item
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When the arguments are mixed NaN and Infinity, this function returns a wrong
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value on some platforms:
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OSF/1 5.1, mingw, MSVC 9.
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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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