75 lines
1.9 KiB
Plaintext
75 lines
1.9 KiB
Plaintext
@node math.h
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@section @file{math.h}
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POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/math.h.html}
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Gnulib module: math
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@mindex math
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Portability problems fixed by Gnulib:
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@itemize
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@item
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The conversion from @code{int} to @code{long double} in incorrect on some
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platforms:
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glibc 2.7 on Linux/SPARC64.
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@item
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The macro @code{NAN} is not defined on some platforms:
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OpenBSD 4.0, AIX 5.1.
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@item
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The macro @code{NAN} is not exposed outside of C99 compilation on some
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platforms:
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glibc.
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@item
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The macros @code{NAN} and @code{HUGE_VAL} expand to a function address
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rather than a floating point constant on some platforms:
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Solaris 10.
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@item
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The macros @code{HUGE_VALF} and @code{HUGE_VALL} are not defined on some
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platforms:
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glibc/HPPA, glibc/SPARC, AIX 5.1, Solaris 9, MSVC 9.
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@item
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The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} are not defined on some
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platforms:
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NetBSD 5.1, AIX 5.1, Solaris 9, MSVC 9.
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@item
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@code{HUGE_VAL}, @code{HUGE_VALF}, @code{HUGE_VALL} are not compile time
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constants on some platforms:
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FreeBSD 5.2, AIX 7.1.
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@item
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@code{INFINITY} and @code{NAN} are not compile time constants
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on some platforms:
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FreeBSD 5.2, AIX 7.1.
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@item
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@code{INFINITY} and @code{NAN} are of type @code{double} instead of @code{float}
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on some platforms:
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FreeBSD 7.1, mingw 5.0.
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@item
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The macros @code{NAN}, @code{HUGE_VALL}, and @code{INFINITY} are not
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defined on some platforms:
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OpenVMS.
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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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@item
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@code{NAN} is not a compile time constant with some compilers:
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OpenVMS.
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@item
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The macro or variable @code{math_errhandling} is not defined on some platforms:
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glibc 2.11, OpenBSD 4.9, NetBSD 5.1, UP-UX 11, Cygwin 1.7.9, mingw, MSVC 9.
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@item
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The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} have wrong values on some
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platforms:
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@c https://dev.haiku-os.org/ticket/18351
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Haiku before 2023-04-08.
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@end itemize
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