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| author | Bruno Haible <bruno@clisp.org> | 2012-03-11 14:42:17 +0100 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2012-03-11 23:24:44 +0100 |
| commit | 6d131d20837bfac5a0c48692485debf3b28bfae2 (patch) | |
| tree | fb085a9a48a9d476c16c67df15f07a5d324204ca /lib/math.in.h | |
| parent | 58f8ff534c6e026b29c0d2cbba9c0f64c9bc755b (diff) | |
| download | gnulib-6d131d20837bfac5a0c48692485debf3b28bfae2.tar.gz | |
New module 'log2'.
* lib/math.in.h (log2): New declaration.
* lib/log2.c: New file.
* m4/log2.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether log2 is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_LOG2, HAVE_DECL_LOG2,
REPLACE_LOG2.
* modules/math (Makefile.am): Substitute GNULIB_LOG2, HAVE_DECL_LOG2,
REPLACE_LOG2.
* modules/log2: New file.
* tests/test-math-c++.cc: Check the declaration of log2.
* doc/posix-functions/log2.texi: Mention the new module and the IRIX
and OSF/1 and Cygwin problems.
Diffstat (limited to 'lib/math.in.h')
| -rw-r--r-- | lib/math.in.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/math.in.h b/lib/math.in.h index 54e7caa833..d3ff7cf917 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -1291,6 +1291,31 @@ _GL_WARN_ON_USE (log1pl, "log1pl has portability problems - " #endif +#if @GNULIB_LOG2@ +# if @REPLACE_LOG2@ +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) +# undef log2 +# define log2 rpl_log2 +# endif +_GL_FUNCDECL_RPL (log2, double, (double x)); +_GL_CXXALIAS_RPL (log2, double, (double x)); +# else +# if !@HAVE_DECL_LOG2@ +# undef log2 +_GL_FUNCDECL_SYS (log2, double, (double x)); +# endif +_GL_CXXALIAS_SYS (log2, double, (double x)); +# endif +_GL_CXXALIASWARN (log2); +#elif defined GNULIB_POSIXCHECK +# undef log2 +# if HAVE_RAW_DECL_LOG2 +_GL_WARN_ON_USE (log2, "log2 is unportable - " + "use gnulib module log2 for portability"); +# endif +#endif + + #if @GNULIB_MODFF@ # if @REPLACE_MODFF@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |