Mercurial > gnulib
view doc/posix-functions/exp2l.texi @ 40111:234fea508b0e
exp2l: Work around inaccurate implementation on NetBSD.
* m4/exp2l.m4 (gl_FUNC_EXP2L): Add test for a certain accuracy.
* doc/posix-functions/exp2l.texi: Mention the NetBSD bug.
author | Bruno Haible <bruno@clisp.org> |
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date | Sun, 20 Jan 2019 21:45:29 +0100 |
parents | 0f6b0bb3cee9 |
children |
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@node exp2l @section @code{exp2l} @findex exp2l POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/exp2l.html} Gnulib module: exp2l or exp2l-ieee Portability problems fixed by either Gnulib module @code{exp2l} or @code{exp2l-ieee}: @itemize @item This function is missing on some platforms: FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, older IRIX 6.5, OSF/1 4.0, Solaris 9, Cygwin, MSVC 9, Interix 3.5, BeOS, Android 4.4. @item This function is not declared on some platforms: IRIX 6.5. @item This function produces results which are accurate to only 16 digits on some platforms: NetBSD 8.0. @end itemize Portability problems fixed by Gnulib module @code{exp2l-ieee}: @itemize @item This function returns a wrong value for a NaN argument on some platforms: OpenBSD 4.9. @item This function returns a wrong value for a negative infinity argument on some platforms: IRIX 6.5. @end itemize Portability problems not fixed by Gnulib: @itemize @end itemize