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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 /modules/log2 | |
| 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 'modules/log2')
| -rw-r--r-- | modules/log2 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/modules/log2 b/modules/log2 new file mode 100644 index 0000000000..bc39b4b7ab --- /dev/null +++ b/modules/log2 @@ -0,0 +1,35 @@ +Description: +log2() function: base 2 logarithm. + +Files: +lib/log2.c +m4/log2.m4 +m4/mathfunc.m4 + +Depends-on: +math +extensions +isnand [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1] +frexp [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1] +log [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1] + +configure.ac: +gl_FUNC_LOG2 +if test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1; then + AC_LIBOBJ([log2]) +fi +gl_MATH_MODULE_INDICATOR([log2]) + +Makefile.am: + +Include: +<math.h> + +Link: +$(LOG2_LIBM) + +License: +LGPL + +Maintainer: +Bruno Haible |