gettimeofday: port recent C++ fix to Emacs Without this further patch, Emacs won't build due to the portcheck failing. Also, this simplifies the patch a bit. * lib/time.in.h (localtime, gmtime): Don't replace unless GNULIB_GETTIMEOFDAY. Treat them more like mktime. * lib/time.in.h (localtime, gmtime): * m4/gettimeofday.m4 (gl_GETTIMEOFDAY_REPLACE_LOCALTIME): * m4/time_h.m4 (gl_HEADER_TIME_H_DEFAULTS): * modules/time (time.h): Don't worry about about the possibility of localtime and gmtime being absent; they're present in all C libraries we know about. * m4/time_h.m4 (gl_HEADER_TIME_H_DEFAULTS): Don't assume sys_time is present and has been initialized. Instead, use a hack that should work even if it hasn't been. Don't use a portcheck for gmtime or localtime; this supports the hack. * modules/time (time.h): Substitute GNULIB_GETTIMEOFDAY.

Description:
ilogb() function: get exponent as integer.

Files:
lib/ilogb.c
m4/ilogb.m4
m4/mathfunc.m4

Depends-on:
math
isfinite        [test $HAVE_ILOGB = 0 || test $REPLACE_ILOGB = 1]
frexp           [test $HAVE_ILOGB = 0 || test $REPLACE_ILOGB = 1]
isnand          [test $HAVE_ILOGB = 0 || test $REPLACE_ILOGB = 1]

configure.ac:
gl_FUNC_ILOGB
if test $HAVE_ILOGB = 0 || test $REPLACE_ILOGB = 1; then
  AC_LIBOBJ([ilogb])
fi
gl_MATH_MODULE_INDICATOR([ilogb])

Makefile.am:

Include:
<math.h>

Link:
$(ILOGB_LIBM)

License:
LGPL

Maintainer:
Bruno Haible