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1ab17d9f64
* lib/math.in.h (ilogb): New declaration. * lib/ilogb.c: New file. * m4/ilogb.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether ilogb is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_ILOGB, HAVE_ILOGB, REPLACE_ILOGB. * modules/math (Makefile.am): Substitute GNULIB_ILOGB, HAVE_ILOGB, REPLACE_ILOGB. * modules/ilogb: New file. * tests/test-math-c++.cc: Check the declaration of ilogb. * doc/posix-functions/ilogb.texi: Mention the new module.
28 lines
685 B
Plaintext
28 lines
685 B
Plaintext
@node ilogb
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@section @code{ilogb}
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@findex ilogb
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/ilogb.html}
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Gnulib module: ilogb
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Portability problems fixed by Gnulib:
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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, IRIX 5.3, MSVC 9.
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@item
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This function returns a wrong result for a zero argument on some platforms:
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OpenBSD 4.9, AIX 5.1.
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@item
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This function returns a wrong result for an infinite argument on some platforms:
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NetBSD 5.1, OpenBSD 4.9.
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@item
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This function returns a wrong result for a NaN argument on some platforms:
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OpenBSD 4.9.
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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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