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annotate doc/posix-functions/isfinite.texi @ 13776:2285cf35fa15

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docs: update cygwin progress * doc/glibc-functions/mkostemp.texi (mkostemp): Added in cygwin 1.7.6. * doc/glibc-functions/mkostemps.texi (mkostemps): Likewise. * doc/posix-headers/fenv.texi (fenv.h): Added after cygwin 1.7.7. * doc/posix-functions/feclearexcept.texi (feclearexcept): Likewise. * doc/posix-functions/fegetenv.texi (fegetenv): Likewise. * doc/posix-functions/fegetexceptflag.texi (fegetexceptflag): Likewise. * doc/posix-functions/fegetround.texi (fegetround): Likewise. * doc/posix-functions/feholdexcept.texi (feholdexcept): Likewise. * doc/posix-functions/feraiseexcept.texi (feraiseexcept): Likewise. * doc/posix-functions/fesetenv.texi (fesetenv): Likewise. * doc/posix-functions/fesetexceptflag.texi (fesetexceptflag): Likewise. * doc/posix-functions/fesetround.texi (fesetround): Likewise. * doc/posix-functions/fetestexcept.texi (fetestexcept): Likewise. * doc/posix-functions/feupdateenv.texi (feupdateenv): Likewise. * doc/glibc-functions/feenableexcept.texi (feenableexcept): Likewise. * doc/glibc-functions/fedisableexcept.texi (fedisableexcept): Likewise. * doc/glibc-functions/fegetexcept.texi (fegetexcept): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Thu, 07 Oct 2010 08:42:24 -0600
parents bb0ceefd22dc
children c65fd41437cf
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1 @node isfinite
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2 @section @code{isfinite}
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3 @findex isfinite
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4
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5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/isfinite.html}
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7 Gnulib module: isfinite
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8
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9 Portability problems fixed by Gnulib:
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10 @itemize
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11 @item
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12 This macro is missing on some platforms:
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13 MacOS X 10.3, OpenBSD 3.8, AIX 5.1, IRIX 6.5, OSF/1 5.1, Solaris 10, Interix 3.5.
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14 @item
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15 This macro incorrectly yields true for some @samp{double} arguments, on some
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16 platforms:
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17 Linux/ia64 (signalling NaNs).
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18 @item
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19 This macro incorrectly yields true for some @samp{long double} arguments, on
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20 some platforms:
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21 x86 (pseudo-zeroes, unnormalized numbers, pseudo-denormals),
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22 x86_64 (pseudo-denormals),
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23 ia64 (pseudo-NaN, pseudo-Infinity, pseudo-zeroes, unnormalized numbers, pseudo-denormals).
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24 @end itemize
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25
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26 Portability problems not fixed by Gnulib:
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27 @itemize
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28 @item
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29 It is implementation-dependent whether @code{isfinite} raises an
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30 exception given a signaling NaN operand.
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31 @end itemize