Hash :
6d131d20
Author :
Date :
2012-03-11T14:42:17
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.
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