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author | Bruno Haible <bruno@clisp.org> | 2010-12-20 03:28:45 +0100 |
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committer | Bruno Haible <bruno@clisp.org> | 2010-12-20 03:28:45 +0100 |
commit | 1b5bc6ed268e3f86e5fab50eb42794400e29ea2f (patch) | |
tree | 200a9620cd02a39ba53ce494ea62917d12aaf2d7 | |
parent | a24f9979e9cc7ed0fcc555ef5b6d81bbfcff8146 (diff) | |
download | gnulib-1b5bc6ed268e3f86e5fab50eb42794400e29ea2f.tar.gz |
isnan: Ensure it is a macro.
* lib/math.in.h (isnan): Define as a macro if not already a macro.
* doc/posix-functions/isnan.texi: Mention problem on IRIX, OSF/1,
Solaris.
-rw-r--r-- | ChangeLog | 7 | ||||
-rw-r--r-- | doc/posix-functions/isnan.texi | 3 | ||||
-rw-r--r-- | lib/math.in.h | 4 |
3 files changed, 14 insertions, 0 deletions
@@ -1,5 +1,12 @@ 2010-12-19 Bruno Haible <bruno@clisp.org> + isnan: Ensure it is a macro. + * lib/math.in.h (isnan): Define as a macro if not already a macro. + * doc/posix-functions/isnan.texi: Mention problem on IRIX, OSF/1, + Solaris. + +2010-12-19 Bruno Haible <bruno@clisp.org> + ldexpl test: Fix link error on OSF/1 5.1. * modules/ldexpl-tests (Makefile.am): Define test_ldexpl_LDADD. diff --git a/doc/posix-functions/isnan.texi b/doc/posix-functions/isnan.texi index 222d2f51d7..2023995542 100644 --- a/doc/posix-functions/isnan.texi +++ b/doc/posix-functions/isnan.texi @@ -12,6 +12,9 @@ Portability problems fixed by Gnulib: @code{isnan} was introduced with C99 and is thus commonly not present on pre-C99 systems. @item +@code{isnan} is not a macro on some platforms: +IRIX 6.5, OSF/1 5.1 with gcc, Solaris 11 2010-11. +@item On IRIX 6.5 with @code{cc}, @code{isnan} does not recognize some NaNs. @item On NetBSD/i386 and glibc/ia64, @code{isnan} does not recognize some diff --git a/lib/math.in.h b/lib/math.in.h index 4fbed08d67..0f78264553 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -680,6 +680,10 @@ _GL_EXTERN_C int rpl_isnanl (long double x); sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \ gl_isnan_f (x)) # endif +/* Ensure isnan is a macro. */ +# ifndef isnan +# define isnan isnan +# endif #elif defined GNULIB_POSIXCHECK # if defined isnan _GL_WARN_REAL_FLOATING_DECL (isnan); |