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| author | Bruno Haible <bruno@clisp.org> | 2012-03-09 02:14:26 +0100 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2012-03-09 02:15:40 +0100 |
| commit | aa42b5455c7a66de3882ba5870fee8abeb379498 (patch) | |
| tree | d3044d00bd33cd5e7f92eb168d313a6c9183c46b /doc/posix-functions/exp2l.texi | |
| parent | f61c11e448791a8977beeb8dcd52bfee225e3ca0 (diff) | |
| download | gnulib-aa42b5455c7a66de3882ba5870fee8abeb379498.tar.gz | |
exp2l-ieee: Work around test failure on OpenBSD 4.9 and IRIX 6.5.
* m4/exp2l-ieee.m4: New file.
* m4/exp2l.m4 (gl_FUNC_EXP2L): If gl_FUNC_EXP2L_IEEE is present,
test whether exp2l works with a NaN argument and with a negative
infinity argument. Replace it if not.
* lib/math.in.h (exp2l): Override if REPLACE_EXP2L is 1.
* m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_EXP2L.
* modules/math (Makefile.am): Substitute REPLACE_EXP2L.
* modules/exp2l (configure.ac): Consider REPLACE_EXP2L.
(Depends-on): Update conditions.
* modules/exp2l-ieee (Files): Add m4/exp2l-ieee.m4.
(configure.ac): Invoke gl_FUNC_EXP2L_IEEE.
* doc/posix-functions/exp2l.texi: Mention the exp2l-ieee module.
Diffstat (limited to 'doc/posix-functions/exp2l.texi')
| -rw-r--r-- | doc/posix-functions/exp2l.texi | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/doc/posix-functions/exp2l.texi b/doc/posix-functions/exp2l.texi index 8e963de8ab..3cb997a4ca 100644 --- a/doc/posix-functions/exp2l.texi +++ b/doc/posix-functions/exp2l.texi @@ -4,9 +4,9 @@ POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/exp2l.html} -Gnulib module: exp2l +Gnulib module: exp2l or exp2l-ieee -Portability problems fixed by Gnulib: +Portability problems fixed by either Gnulib module @code{exp2l} or @code{exp2l-ieee}: @itemize @item This function is missing on some platforms: @@ -16,6 +16,16 @@ This function is not declared on some platforms: IRIX 6.5. @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 |